4421WB
WPS BITUFLAME® MEMBRANE ROOFING
1
GENERAL

If you have pre-customised this work section using the "questions and answers" provided as part of the downloading process, it may be necessary to amend some clauses to suit the final project-specific version.

 

The section must still be checked and customised to suit the project being specified, by removing any other irrelevant details and adding project-specific details and selections.

 

This section relates to Waterproofing Systems NZ Ltd bituFLAME® membrane roofing, bonded to:

Modify or extend the above description to suit the project being specified.

 

The bituFLAME® double layer system is recommended for plywood and concrete substrates.  The bituFLAME® double layer vented system is used where moisture needs to be vented from the roof.

1.1
RELATED WORK

Refer to ~ for ~

Refer to 4331H JAMES HARDIE FIBRE CEMENT DECKING section for compressed fibre cement substrate.

Refer to 4337 PLYWOOD ROOFING AND DECKING for plywood substrates.

Refer to 4338LS LAMINEX NEW ZEALAND STRANDSARKING ROOFING SUBSTRATE for sarking application.

 

Include cross references to other sections where these contain related work.

Documents
1.2
DOCUMENTS

Refer to the general section 1233 REFERENCED DOCUMENTS.  The following documents are specifically referred to in this section:

NZBC E2/AS1

External moisture

AS/NZS 2269.0

Plywood - Structural - Specifications

Delete from the DOCUMENTS clause any document not cited.  List any additional cited documents.

 

The following are related documents and if referred to in the work section need to be added to the list of DOCUMENTS:

NZBC E1/AS1

Surface Water

NZS 3114

Specification for concrete surface finishes

BRANZ BU 583

Waterproof decks

BRANZ publication

Selecting roof claddings

1.3
MANUFACTURER/SUPPLIER DOCUMENTS

Manufacturer’s and supplier’s documents relating to this part of the work:

Waterproofing Systems NZ Ltd Product Manual (2017 edition)

Standard detailed drawings

Substrate readiness check sheet – bituFLAME®
Quality Control check sheet – bituFLAME®

BRANZ Appraisal 404 - bituFLAME® Roof Membrane Systems

 

Supplier contact details

Company:

Waterproofing Systems NZ Ltd

 

Contact

Email

Telephone

Hilton Boshard:

hilton@waterproofing.co.nz

021 667 119

John Stallard:

john@waterproofing.co.nz

021 457 953

Office:

admin@waterproofing.co.nz

09 579 1460

Web:

www.waterproofing.co.nz

 

It is important to ensure that all personnel on site have access to accurate, up to date technical information on the many products, materials and equipment used on a project.  In most cases individual products are not used in isolation, but form part of a building process.  Also a particular manufacturer's and/or supplier's requirements for handling, storage, preparation, installation, finishing and protection of their product can vary from what might be considered the norm.  Access to technical information can help overcome this potential problem.

Warranties

Use for listing all warranties relating to this section.  Supplier and manufacturer warranties are those that are freely offered by the supplier or manufacturer, similarly installers and applicators.  They are usually in their standard form and subject to their terms and conditions. Check the general section 1237 WARRANTIES for the date of commencement of warranties; which is normally practical completion of the contract, although not all suppliers, manufacturers, installers or applicators will agree to this.  Refer to the chosen conditions of contract as it may also contain information on warranties.

1.4
WARRANTY - SUPPLIER

Provide a material manufacturer/supplier warranty:

20 years:

For bituFLAME®, 2 layer system and accessories which includes an appropriate maintenance statement and schedule

15 years:

For bituFLAME®,Plura re-roof system and accessories which includes an appropriate maintenance statement and schedule

 

  • Provide this warranty on the suppliers standard form (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT)
  • Commence the warranty from the date of completion of application.

Refer to the general section 1237 WARRANTIES for additional requirements.

Modify or expand the clause to suit project or manufacturer/supplier requirements, options include:

  • Modify the form to be used
  • Commence the warranty from the date of purchase or completion of contract works.(check with the manufacturer/supplier)
1.5
WARRANTY - INSTALLER/APPLICATOR

Provide an installer/applicator warranty:

7 years:

For a workmanship warranty

 

  • Provide this warranty on the installer's standard form. (if not available then use the standard form in the general section 1237WA WARRANTY AGREEMENT)
  • Provide the completed substrate readiness check sheet
  • Provide the completed Quality Control check sheets
  • Provide a PS3 for the system installation to the main contractor
  • Commence the warranty from the date of completion of application

Refer to the general section 1237 WARRANTIES for additional requirements.

Modify or expand the clause to suit project or installer/applicator requirements, options include:

  • Modify the form to be used
  • Commence the warranty from the date of practical completion (check with the installer/applicator)
Requirements
1.6
QUALIFICATIONS

Roofing work to be carried out by experienced and fully qualified applicators approved by Waterproofing Systems NZ Ltd to install the bituFLAME® membrane system, and who holds a Licensed Building Practitioner's licence for external membrane applications.

1.7
NO SUBSTITUTIONS

Substitutions are not permitted to any specified Waterproofing Systems NZ Ltd system, or associated components and products.

Performance
1.8
PRE INSTALLATION MEETING

Convene a meeting between the applicator, contractor and all associated consultants to ensure all parties have reviewed the plans, detailed drawings and specification and that all parties fully understand the installation and know what is required for effective performance of the system.

1.9
SPECIAL DETAILS

Where a standard WPS detail does not exist, or if a standard detail cannot be applied, an approved alternative must be obtained from Waterproofing Systems NZ Ltd  before proceeding with the installation.

1.10
PERFORMANCE

Accept responsibility for the weather-tight performance of the completed roofing system, including all penetrations through the roof and junctions with walls and parapets.

Refer to later EXECUTION clause on co-operating with others on the installation of elements which penetrate or adjoin the roofing system; including walls and parapets, skylights, sundry elements fixed through the roofing surface, service pipework etc.

1.11
QUALITY ASSURANCE

Maintain installation quality necessary to assure that work is performed in accordance with this specification and the qualifying requirements of Waterproofing Systems NZ Ltd.

 

Ensure that the applicator's substrate readiness check sheet and quality control sheets are available on site and are completed as the installation is in progress fully and faithfully completed for each installation area.

1.12
WATER-TIGHTNESS

Accept responsibility for the water-tight performance of the completed bituFLAME® membrane system.  All penetrations to comply with NZBC E2/AS1, 8.5.9 Penetrations and Waterproofing Systems NZ Ltd product manual recommendations.

1.13
FLOOD TEST

Dam up at the rainwater droppers, scuppers and sumps to a depth of 40mm and flood test for 24 hours.  Follow through with a full flood test and sprinkler test vertical areas of the roof such as upstands and parapets.  Make good any lack of water tightness when the surface is completely dry.

Engineer to confirm extra loading on roof of flood testing has been allowed for in the design of the structure.

Not all applications can be checked.  All gutters should be checked.

Modify clause to suit application.

2
PRODUCTS
Materials
2.1
PRIMER - SOLVENT BASED

BituPRIME quick drying solvent based bituminous primer compatible with the waterproofing membrane and formulated to prepare the substrate for optimum application of the membrane.  Supplied in 20 litre pails.

2.2
PRIMER - WATER BASED

BituPRIME quick drying water based bituminous primer compatible with the waterproofing membrane and formulated to prepare the substrate for optimum application of the membrane.  Supplied in 20 litre pails.

2.3
PRIMER/ADHESIVE - BITUBOND® WATER BASED

Liquid applied water based bituminous adhesive primer for smooth surfaces such as polyethylene, PVC, aluminium, metals and polystyrene substrates and for for areas of installation where a torch cannot be safely used or is being used in areas specified in Waterproofing Systems NZ Ltd specifications or when the membrane system is being installed using the cold-applied adhesive method.  Supplied in 10 litre pails.

Ensure bituBOND® adhesive primer used for smooth surfaces including along drip edge trim, and around rainwater outlet flanges, as required.

2.4
DOUBLE LAYER BITUFLAME® SYSTEM - SELF ADHERED BASE SHEET

BituFLAME® BS, Plura AD, an APP modified bitumen 2.5mm thick base sheet with glass fibre reinforcement with a peel off removable backing.  Supplied in 1m wide x 10m long rolls.

BituFLAME® Plura AD to be used where an open flame cannot be applied to a substrate.

2.5
DOUBLE LAYER BITUFLAME® SYSTEM - BASE SHEET

BituFLAME® BS, an APP modified bitumen 3.0mm thick base sheet with glass fibre reinforcement with PE film to both sides.  Supplied in 1m wide x 10m long rolls.

2.6
DOUBLE LAYER BITUFLAME® SYSTEM - BASE SHEET SAND FINISH

BituFLAME® BS, an APP modified bitumen 3.0mm thick base sheet with polyester fibre reinforcement with sand finish one side and PE film other side.  Supplied in 1m wide x 10m long rolls.

2.7
DOUBLE LAYER BITUFLAME® SYSTEM - CAP SHEET MINERAL CHIP FINISH

BituFLAME® CS, an AAP modified bitumen 4.0mm thick exposed waterproofing membrane cap sheet with polyester fibre reinforcement with a mineral chip finish.  Supplied in 1m wide x 10m long rolls.

BituFLAME® CS is available in white, green and black.

2.8
DOUBLE LAYER BITUFLAME® SYSTEM - CAP SHEET SAND FINISH

BituFLAME® Tanking, an AAP modified bitumen 3.0mm thick exposed waterproofing membrane cap sheet with polyester fibre reinforcement with a sand finish.  Supplied in 1m wide x 10m long rolls.

BituFLAME® Tanking is available in black.  Sand finish membranes must be protected against UV exposure by finishing in WPS Bitumous Aluminium UV Coating or covered with selected stone ballast finish.

2.9
SINGLE LAYER BITUFLAME® SYSTEM - BITUFLAME PLURA RE-ROOF CAP SHEET

BituFLAME® Plura , re-roof membrane, a 4mm thick APP modified low viscosity bitumen with polyester fibre reinforcement with a mineral chip finish.  Supplied in 1m wide x 8m long rolls.

Suitable as a re-roof cap sheet for direct overlay of existing bitumen membrane including mineral chip finishes, pour-on bitumen and asphalt finishes.  Compatible with SBS & APP modified bitumen membranes.
BituFLAME® Plura re-roof  is available in green and black.

2.10
BITUFLAME SEALANT

bituFLAME® Sealant, a general pupose bituminous sealant compatible with bituFLAME® membrane systems.  Supplied in 280 mil cartridges

2.11
BITUFLAME® EXTRUDED BITUMEN FILLETS

BituFLAME® extruded bitumen fillets for all internal angles.  Supplied in 25mm x 35mm x 25mm supplied in 1.1m lengths.

2.12
WATERPROOFING SYSTEMS C-SCREED

WPS C-Screed, a premium grade polymer enhanced cementitious compound designed for high performance screeding applications 2-100mm thick, where substrate falls are required on concrete substrates for the bituFLAME® application. Supplied in 20Kg bags.

Use as Gripset DM for feather edge applications.

2.13
GRIPSET DM POWDER & GRIPSET 11Y LATEX WP ADDITIVE

Gripset DM is a premium grade cement based compound used in conjunction with Gripset 11Y Latex Waterproof additive as a repair mortar for substrates.

Used for making good defects and cracks in concrete substrates.

Coatings
2.14
WPS CLEAR PROTECTIVE COATING

Crystal Glaze a clear specialist coating with anti-lichen, moss and UV resistant properties for additional membrane protection which will bind and retain the mineral chip finish.  Supplied in 10 litre pails.

Use WPS Crystal Glaze used only on bituFLAME®  mineral chip finishes.

2.15
WPS BITUMOUS ALUMINIUM UV COATING

A non-fibred aluminium paint used to protect bituFLAME® CS (sand finish) from effects of UV.  Supplied in 20 litre pails.

Use WPS Bitumous Aluminium UV Coating with bituFLAME® CS (Sand finish) where exposed to UV.

Components
2.16
ROOF VENTS

BituFLAME® one way roof vents sizes 75mm diameter x 200mm high.

Air vents are recommended on any confined roof space cavity to provide ventilation and reduce the stress on the roof system.  At least two vents are required for each roof space, or a maximum of one vent per 70m² of roof area.  Where the roof space is part of ventilation system, then specific design should apply.  Additionally, WPS air vents can be used to vent substrate moisture that might occur during inclement weather during installation or contained within the substrate.

2.17
RING CLAMP DROPPER - ALLPROOF

Allproof Vinylrite ring clamp droppers with a PVC base, brass screw fixed ring clamp and leaf guard fitting.  Supplied in 80mm, 100mm and 150mm outlet sizes.

2.18
RING CLAMP DROPPER - AQUAKNIGHT

Aquaknight heavy duty ring clamp droppers with a PVC base, stainless steel ring clamp and stainless steel leaf guard.  Supplied in 50mm, 80mm and 100mm diameter outlet sizes.

2.19
RING CLAMP OVERFLOW DROPPER - ALLPROOF

Allproof Vinylrite ring clamp dropper overflows with a PVC base, brass ring clamp and brass overflow leaf guard combination.  Supplied in 80mm, 100mm and 150mm diameter outlet sizes.

2.20
RING CLAMP OVERFLOW DROPPER - AQUAKNIGHT

Aquaknight heavy duty ring clamp overflow droppers with a PVC base, stainless steel ring clamp and stainless steel overflow leaf guard combination.  Supplied in 50mm, 80mm and 100mm diameter outlet sizes.

2.21
SCUPPER OUTLET

E2 compliant, type 316 Stainless steel or aluminium scuppers designed to be recessed into the concrete or plywood substrates flush.  Available in 200mm x 75mm x 400mm long.

2.22
SCUPPER OVERFLOW

Type 316 Stainless steel or aluminium scupper overflows designed to be recessed into concrete or plywood substrates flush with the substrate surface.  Available in 100mm x 100mm wide x 400mm long.

2.23
ALLPROOF OVER FLOW SUMP

Allproof overflow sump with integral overflow and designed to be recessed into concrete or plywood substrate surfaces flush. The sumps come with a riser fitting for the overflow outlet.  Outlet sizes are 80mm, 100mm and 150mm diameter.

2.24
DRIP EDGE TRIM

Aluminium 50mm x 50mm drip edge trim in supplied in 3m lengths.

Installed on the underside of  plywood / compressed fibre cement / Laminex Strandsarking edges as drip edge trim at external gutters.

3
EXECUTION
Conditions
3.1
GENERALLY

Install all products in accordance with Waterproofing Systems NZ Ltd Product Manual (2014 edition).

Work and materials to Waterproofing Systems NZ Ltd product method statements and specifications.

3.2
STORAGE

Take delivery of rolls undamaged and include for site handling facilities where required.  Stack on end, off the ground on a level surface, out of sunlight and above 5°C and with accessories.  Do not allow rolls to become crushed.

3.3
CONFIRM LAYOUT

If not detailed on the drawings, confirm the layout with the site project manager to suit site conditions, and Waterproofing Systems NZ Ltd specification.

On sloping surfaces >1 in 40, it is usual to lay up the slope. Lay roofs to a minimum fall of 1:30.

Application - preparation
3.4
PRELIMINARY WORK

Ensure that preliminary work, including formation of falls, flashing rebates, provision of battens and fillets and fixing of vents and outlets to levels, is complete and properly constructed to enable the system to work as intended.  Ensure bituFLAME® bitumen extruded bitumen fillets are installed sealing off all internal substrate junctions.  Ensure the substrate is smooth, clean and dry.  Identify areas of potential movement and plan for movement joints.

 

Ensure WPS Substrate Readiness Check Sheet has been completed and WPS Quality Control Check Sheets are on site and completed.

3.5
ACCEPTANCE OF SUBSTRATE

Confirm that the substrate complies with the NZBC E2/AS1 for the relevant substrates and Waterproofing Systems NZ Ltd documents, including fillets, sumps, outlets and projections, and ensure work of the required standard.  Ensure the fall complies with E2/AS1 including correct fall to rainwater outlets to avoid ponding,

  • Lay roofs to a minimum fall of 1:30 (2°) to NZBC E2/AS1, 8.5.1 a.
  • Lay decks to a minimum of 1:40 (1.5°) to NZBC E2/AS1, 8.5.1 b.
  • Lay gutters to a minimum fall of 1:100 (0.57°) to NZBC E2/AS1, 8.5.1 c.

Check with the BCA if they have requirements in addition to the NZBC.

3.6
CONCRETE SUBSTRATE

Ensure concrete substrate has been allowed to cure for at least 28 days and has a moisture content of less than 75% RH before commencing application.  Prepare surface, including vacuum cleaning and acid etching/diamond grinding as necessary to leave smooth, clean, dry and free of debris.  Make good any cracks  or defects with Gripset DM Mortar

3.7
CONCRETE SUBSTRATE - INSTALL SCREED

Install WPS C-Screed in accordance with manufacturer's requirements to form required falls to concrete substrate prior to bituFLAME® application.

Use Gripset DM for feather edge applications.

3.8
PLYWOOD SUBSTRATE

Plywood to be minimum 17mm thick square-edged sheets for roof membranes and 19mm for decks complying to AS/NZS 2269.0, minimum CD structural grade with the sanded C side upwards.  Treated H3 with waterborne CCA treatment and kiln dried after treatment.  Lay with staggered joints (brick bond) with all edges of the sheets fully supported.  Ensure sheets are rigid with flush joints with no surface defects or ponded areas.  Chamfer all external edges with a minimum radius of 5mm.  Fix with glue and 10 gauge x 50mm stainless steel countersunk head screws, with all sheets tight butted.  Fix at 150mm centres on edges and 200mm in the body of the sheets.  Plywood and the timber substructure to have a maximum moisture content of 20% when the membrane is installed.  Plywood must not be LOSP treated.

Plywood substrates are best fixed with stainless steel, self-tapping, counter-sunk screws and tight butted.  Specify in 4337 PLYWOOD ROOFING AND DECKING, along with a requirement to bring the substrate up to an acceptable standard for this clause.  Do not use hardboard or MDF board.  Chamfer 30mm back from the outer edges of plywood sheets that run into gutters or rainwater heads to prevent the roof edge-to-gutter junction forming a lip and the free run of water into the gutters.  T&G plywood is not recommended if sheet edges are not supported with timber nogs.

3.9
LAMINEX STRANDSARKING SUBSTRATE

Refer to 4338LS LAMINEX NEW ZEALAND STRANDSARKING ROOFING SUBSTRATE for specification requirements and details.

Waterproofing Systems NZ Ltd require sheets to be tight butted.  Modify 4338LS LAMINEX NEW ZEALAND STRANDSARKING ROOFING SUBSTRATE to suit this requirement. Make allowance for expansion, particularly for larger roof areas, contact Waterproofing Systems NZ Ltd for guidance.

3.10
FIBRE CEMENT SUBSTRATE - ROOF DECKS

Refer to relevant compressed fibrecement section for specification requirements and details.

Amend above clause to suit selected compressed fibre cement substrate.  Refer to 4331H JAMES HARDIE FIBRE CEMENT DECKING section if using.

3.11
EXISTNG ROOF MEMBRANES SUBSTRATES

Clean down existing roof membrane and remove all contamination and loose particles.  Check that existing membrane is still fully bonded before application, if not, use spot mechanical fixing at 300mm centres as required.  Check also that existing laps and water discharge outlets are intact and watertight, if not, make good before applying bituFLAME® Plura re-roofing system.

 

Before applying membrane carry out preparatory work as follows:

  • On old pour-on bitumen systems with large cracks and volcanoes identified, repair them using bitu-screed mortar.
  • On existing aluminium coated asphalt and modified bitumen membranes water blast the surface to remove loosely bonded parts of the mineral chip finishes, and remove loose chips with a leaf blower.  Refix any loose membrane with mechanical fixing at 300mm centres as required.

Modify above clause to suit.  Contact Waterproofing Systems NZ Ltd to confirm suitability of existing membrane roof and to confirm any additional preparation work required.

3.12
TURN DOWNS

Where the membrane is to be turned down at an external corner, chamfer the corner to provide a minimum 5mm radius.

3.13
INTERNAL UPSTANDS

Install bituFLAME® extruded bitumen fillets to all internal upstands and ensure tight and neat fit.

3.14
FLASHINGS

Fit membrane flashings to all internal and external corners and upstands and to all penetrations to Waterproofing Systems NZ Ltd specifications.  Neatly mould membrane up all upstands and around all roof penetrations with a tight cove.

3.15
SET-OUT

Unroll and neatly set out rolls starting at the lowest point of the roof and run perpendicular to the roof pitch.  Lay out membrane and allow to relax for 30 minutes prior to laying.  In cooler conditions allow additional time for the membrane to fully relax.

Application - laying
3.16
CONDITIONS

Do not lay membrane in wet or misty conditions or below 7°C.  Check that the substrate is dry at time of laying.  Concrete maximum moisture content 75% RH; plywood maximum moisture content 20%.

3.17
APPLICATION TORCH ON MEMBRANES - GENERALLY

Install the selected bituFLAME® base sheet and cap sheets specified, install the  membrane system in accordance with the bituFLAME® Product Manual specification.

3.18
PRIMING

Prime all surfaces with appropriate primer in strict accordance with Waterproofing Systems NZ Ltd recommendations, ensuring good even coverage.  Substrates left primed for more than 3 days before membrane installation will need re-priming due to contamination.

Ensure bituBOND® adhesive primer used for smooth surfaces including along drip edge trim, and around rainwater outlet flanges, as required.

3.19
LAYING AND JOINTING

Lay membrane using a gas blow torch applied heat bonding, allowing 100mm for all edge laps and 150mm for all end laps.  Where a torch-on gas flame heat cannot be applied use cold applied bituBOND® with a hot air gun for the application of heat to make the bond.  Lay in order from sumps, through gutters, valleys, eaves, verges, main roof and upstands to cover flashings.

3.20
HEAT CONTROL

Control heat to ensure the membrane is fully bonded during installation  to the substrate with all laps properly formed.  Ensure full bonding between the bituFLAME® base sheet and bituFLAME® cap sheet.  Do not over heat membrane.

Over heating membrane may damage the polyester reinforcement.

3.21
LAY SELF ADHERED BASE SHEET

Remove peel off backing film of the bituFLAME® Plura AD and apply directly onto the primer allowing 100mm side laps and 150mm end laps.  Apply membrane to Waterproofing Systems NZ Ltd installation specifications.  bituFLAME® Plura AD is thermo-activated when the cap sheet is fully torch welded in place.

Note: bituFLAME® Plura AD to be used where an open flame cannot be applied to a substrate.

3.22
LAY BITUFLAME® BASE SHEET

Fully torch the rolls of bituFLAME® BS 3mm thick directly to the primed substrate allowing for 100mm side laps and 150mm end laps.

3.23
LAY BITUFLAME® CAP SHEET

Set out the selected bituFLAME® cap sheets to ensure laps are off-set to the base sheet.  Fully torch to the base sheet to Waterproofing Systems NZ Ltd installation instructions, ensuring the cap sheet is fully bonded to the base sheet.  All side laps 100mm wide and end laps 150mm wide.  All laps fully welded and seamed off.

3.24
LAY BITUFLAME® PLURA RE-ROOF CAP SHEET

Fully torch the rolls of bituFLAME® Plura Re-Roof, 4mm thick directly onto prepared existing membrane roof allowing for 100mm side laps and 150mm end laps to to Waterproofing Systems NZ Ltd installation instructions.  All laps fully welded and seamed off.

Suitable as a re-roof cap sheet for direct overlay of existing bitumen membranes, including mineral chip finishes, pour-on bitumen and asphalt finishes.

3.25
INTERNAL GUTTERS

Lay membrane in box gutters longitudinally with the membrane neatly dressed into the internal corners and through the base of the gutter.  Ensure ring clamp droppers, stainless steel scuppers or overflow sumps are all fitted recessed into the substrate flush with the finished surface.  Scuppers must be finished with a drip edge for the water discharge.

3.26
EXTERNAL GUTTERS

Pre-prime the drip edge angle with bituBOND® adhesive at the time of general priming.  Install the bituFLAME® base sheet dressing down the external edge forming good adhesion then dress down onto the drip edge angle with slightly less heat to prevent burning off the primer.  Firmly block on the top external corner and front vertical face of the down turn.  Repeat the same action when installing the bituFLAME® cap sheet and trim off flush with the bottom of the drip edge. This requires to be completed prior to external gutter installation.

3.27
WELD JOINTS

Weld lap joints using gas blow torch applied heat, remove granules from any cut end sheet lap area to create bitumen to bitumen contact.  All laps, junction’s and penetrations  to be checked make good any defective lap welds.

3.28
PENETRATIONS

Cut and carefully mould with slight heat and dress into and around the penetration.  Torch weld into place ensuring a water tight seal.  Refer to detailed drawings in the bituFLAME® product manual.

3.29
INSTALL ROOF VENTS

Install bituFLAME® one way roof vents for roof space/moisture venting, 1 for every 70m² and a minimum of 2 vents.  Dress the bituFLAME® membrane up the vent body terminating under the vent cap.  Make good any exposed bitumen with loose chip to protect the membrane from weathering elements.

3.30
INSTALL RING CLAMP DROPPER

Install the specified ring clamp dropper, ensure it is recessed flush or just below flush with the adjacent substrate.  Refer to SELECTIONS for ring clamp dropper type and size.

3.31
INSTALL RING CLAMP OVERFLOW DROPPER

Install the specified ring clamp overflow dropper, ensure it is recessed flush or just below flush with the adjacent substrate.  Refer to SELECTIONS for ring clamp overflow dropper type and size.

3.32
INSTALL SCUPPER

Install the selected scupper, ensure it is recessed flush or just below flush with the adjacent substrate.  Refer to SELECTIONS for ring clamp overflow dropper type and size.

3.33
INSTALL SCUPPER OVERFLOW

Install the selected scupper overflow, ensure it is recessed flush or just below flush with the substrate and is the specified size on the detailed drawings.  Refer to SELECTIONS for scupper overflow type.

3.34
INSTALL OVER FLOW SUMP

Install Allproof overflow sump seated flush or just under flush with the substrate glued and counter sunk screwed into position.  Finish the bituFLAME® into the sump 50mm deep.

3.35
MOVEMENT JOINTS

Install specified site specific expansion joints where marked up on the roof plan as specified to the design detail within the plans and detailed drawings for the project.

Finishing
3.36
APPLY CLEAR COATING – BITUFLAME® CS - MINERAL CHIP FINISH

Apply WPS Crystal Glaze single coat system with brush or roller over bituFLAME® CS (mineral chip finish) or over bituFLAME® Plura Re-Roof (mineral chip finish) in accordance with manufacturers requirements ensuring that the coverage is achieved.

Used to bind mineral chips and provide an anti-lichen and moss additive.

3.37
APPLY BITUMOUS ALUMINIUM UV COATING

Apply WPS bitumous aluminium UV Coating over bituFLAME® Tanking cap sheet (sand finish)  where exposed to UV in.  Apply in accordance with manufacturer's requirements ensuring that the coverage is achieved.

3.38
FOOT TRAFFIC

Heavy foot traffic is not allowed on the membrane after laying.

3.39
ACCESS BOARDS

Provide access boards for later operations and remove when no longer needed.

3.40
ACCEPTANCE
  • Arrange for an inspection of the completed work.
  • Provide the applicator's substrate readiness check sheets and quality control sheets to the main contractor and to Waterproofing Systems for the issuing of the materials warranty
  • Co-ordinate with the main contractors for the protecting and maintaining of roofing membrane until completion of the contract works.
3.41
SUBSEQUENT WORK

Make good any covering cut or deformed by later work.  Making good to take the form of inserting a new whole or part infill sheet to maintain the appearance of the covering as originally laid.

Completion
3.42
COMPLETION MATTERS

Refer to 1270 CONSTRUCTION for completion requirements and if required commissioning requirements.

Use this standard generic clause and if appropriate add additional special requirements.

3.43
FLOOD TEST

Dam up at the rainwater droppers, scuppers and sumps to a depth of 40mm and flood test for 24 hours.  Follow through with a full flood test and sprinkler test vertical areas of the roof such as upstands and parapets.  Make good any lack of water tightness when the surface is completely dry.

Modify clause to suit application.

3.44
CLEAN UP

On completion remove debris, unused materials and elements from the roof.  Use a leaf blower to corner the loose chip and remove leaving the roof in a clean and tidy condition.

3.45
LEAVE

Conduct a final inspection of the completed bituFLAME® membrane and leave work to the finished standard required.

4
SELECTIONS

For further details on selections go to www.waterproofing.co.nz.

Substitutions are not permitted to the following, unless stated otherwise.

If substitutions are permitted modify the statement above, ensure the NO SUBSTITUTIONS clause from GENERAL is treated the same.

 

Select the options to suit the project and delete options not specified.

Materials
4.1
WPS BITUFLAME® DOUBLE LAYER SYSTEM

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

~

Base sheet:

~

Cap sheet:

~

Finish:

~

Colour:

~

Sealant:

bituFLAME® Sealant

Option

Substrate:

Concrete, plywood, compressed fibre cement, strandsarking, polystyrene (such as Black Pearl)

Primer:

bituPRIME – solvent based

bituPRIME – water based

bituBOND® – water based adhesive/ primer  for smooth surfaces such as PVC, aluminium, metals and polystyrene substrates and for for areas of installation where a torch cannot be safely used.

Base sheet:

2.5mm bituFLAME ® BS  Plura AD- self adhered used where an open flame cannot be applied to a substrate, eg polystyrene substrates

3.0mm bituFLAME ® BS with glass fibre reinforcement – used typically

3.0mm bituFLAME ® BS sand finish with polyester reinforcement

Cap sheet / finish:

4.0mm bituFLAME ® CS mineral chip finish – used typically

3.0mm bituFLAME ® CS sand finish – used if WPS Bitumous Aluminium UV Coating required, under stone ballast etc

Colour:

bituFLAME ® CS mineral chip finish  - White, Black or Green

bituFLAME ® CS sand  finish  - Black

4.2
WPS BITUFLAME® PLURA RE-ROOF SYSTEM

Location:

~

Substrate:

Existing membrane roofing

Supplier:

Waterproofing Systems NZ Ltd

Primer:

Not required

Cap sheet:

4mm bituFLAME® Plura , Re-Roof

Finish:

Mineral

Colour:

~

Sealant:

bituFLAME® Sealant

Option

Subsrtate:

Suitable as a re-roof cap sheet for direct overlay of existing bitumen membrane including mineral chip finishes, pour-on bitumen and asphalt finishes.  Compatible with SBS & APP modified bitumen membranes.

Contact Waterproofing Systems NZ Ltd to confirm suitability of existing membrane roof and to confirm what preparation is required.

Colour:

Black or Green

Materials – Preparation
4.3
WPS C-SCREED

Location:

~

Substrate:

Concrete

Supplier:

Waterproofing Systems NZ Ltd

Screed:

C Screed

Note:

Location:

C Screed applied from 2mm to 100mm thick, to form required falls on concrete substrates prior to application of bituFLAME membrane.

Use Gripset DM for feather edge applications.

Coatings:
4.4
WPS PROTECTIVE CLEAR COATING

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Coating:

Crystal Glaze

Options:

Substrate:

bituFLAME® CS (mineral chip finish) or over bituFLAME® Plura Re-Roof (mineral chip finish).  WPS Crystal Glaze used only on bituFLAME® mineral chip finishes. Contains an anti-lichen and moss coating

4.5
WPS BITUMOUS ALUMINIUM UV COATING

Location:

~

Substrate:

bituFLAME® CS sand finish

Supplier:

Waterproofing Systems NZ Ltd

Coating:

Bitumous Aluminium UV Coating

Note:

Substrate:

bituFLAME® CS (Sand finish) where exposed to UV

Components
4.6
RING CLAMP DROPPER

Location:

~

Supplier:

~

Brand:

~

Type:

~

Select from the following suppliers Allproof Industries or Aquaknight Industries Ltd.

 

Supplier:

Allproof Industries

Brand:

Allproof Sureflow ring clamp droppers

Type:

Sureflow80 - 80mm Membrane Clamp Dome Roof Drain

 

Sureflow80 Flat -  80mm Membrane Clamp Flat Roof Drain

 

Sureflow80 Flat BR - 80mm Membrane Clamp Flat Bronze Roof Drain

 

Sureflow80 CC - 80mm Sureflow Clamping Collar Drain

 

Sureflow100 - 100mm Membrane Clamp Dome Roof Drain

 

Sureflow100 Flat - 100mm Membrane Clamp Flat Roof Drain

 

Sureflow100 Flat BR - 100mm Membrane Clamp Flat Bronze Roof Drain

 

Sureflow100 CC - 100mm Sureflow Clamping Collar Drain

 

Sureflow150 - 150mm Membrane Clamp Dome Roof Drain

 

Sureflow150 Flat - 150mm Membrane Clamp Flat Roof Drain

 

Sureflow150 Flat BR - 150mm Membrane Clamp Flat Bronze Roof Drain

 

Sureflow150 CC - 150mm Sureflow Clamping Collar Drain

 

Supplier:

Aquaknight Industries Ltd.

 

Brand:

HIFLOW sheet membrane clamping outlets

 

Type & description:

Deck drain - side exit 80mm

stainless steel flat lid

 

Deck drain - bottom exit 50mm

stainless steel flat lid

 

Deck drain - bottom exit 80mm

stainless steel flat lid

 

Deck drain - bottom exit 100/80mm

stainless steel flat lid

 

 

 

 

Roof drain - Side exit 80mm

stainless steel dome

 

Roof drain - Bottom exit 50mm

stainless steel dome

 

Roof drain - Bottom exit 80mm

stainless steel dome

 

Roof drain - Bottom exit 100/80mm

stainless steel dome

 

Roof drain - Bottom exit 150mm

stainless steel dome

4.7
RING CLAMP OVERFLOW DROPPER

Location:

~

Supplier:

~

Brand:

~

Type:

~

Select from the following suppliers Allproof Industries or Aquaknight Industries Ltd.

 

Supplier:

Allproof Industries

Brand:

Allproof Sureflow ring clamp droppers

Type:

Sureflow80 OFLOW - 80mm Membrane Clamp Overflow

 

Sureflow100 OFLOW  - 100mm Membrane Clamp Overflow

 

Sureflow150 OFLOW  - 150mm Membrane Clamp Overflow

 

Supplier:

Aquaknight Industries Ltd.

 

Brand:

HIFLOW sheet membrane clamping outlets

 

Type & description:

Roof drain & overflow insert - Side exit 80mm

stainless steel dome

 

Roof drain & overflow insert  - Bottom exit 50mm

stainless steel dome

 

Roof drain & overflow insert  - Bottom exit 80mm

stainless steel dome

 

Roof drain & overflow insert  - Bottom exit 100/80mm

stainless steel dome

 

Roof drain & overflow insert  - Bottom exit 150mm

stainless steel dome

4.8
SCUPPERS

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Brand:

~

Size:

200mm wide x  75mm high x 400mm long

Options:

Type:

Type 316 Stainless steel or aluminium

4.9
SCUPPER OVERFLOWS

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Type:

~

Size:

100mm wide x 100mm high x 400mm long

Options:

Type:

Type 316 Stainless steel or aluminium

4.10
OVERFLOW SUMP

Location:

~

Supplier:

Allproof Industries

Type:

Allproof Overflow Sump RWS 80-150

Outlet diameter:

~

Options:

Outlet diameter:

80mm, 100mm and 150mm

4.11
ROOF VENTS

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Type:

bituFLAME one way roof vents sizes

Size:

75mm diameter x 200mm high

Note:

Location:

vent for roof space/moisture venting 1 for every 70m² and a minimum of 2 vents

4.12
DRIP EDGE TRIM

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Type:

50x50mm aluminium angle

Note:

Location:

Installed on the underside of  plywood / compressed fibre cement / Laminex Strandsarking edges as drip edge trim at external gutters.