4131WP
WPS BITUFLAME® TORCH ON TANKING
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 the application of Waterproofing Systems NZ Ltd bituFLAME® torch on tanking membrane for basement foundation and vertical wall applications.

It is used:

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

 

bituFLAME® is recommended as a torch on tanking membrane for basement foundation and vertical walls in low to medium hydrostatic applications as a single layer system, and in medium to high hydrostatic applications as a double layer system.

 

rawMAT Bentonite is the most secure tanking system, use in high to extreme hydrostatic conditions.  Refer to 4131WR WPS RAWMAT BENTONITE TANKING.

 

bituBOND® should only be used in low hydrostatic tanking situations.  Installing bituBOND® to basement walls with another DPM product used under the slab is suitable for non-tanking applications.  Refer to 4131WP WPS BITUBOND SELF-STICK TANKING.

1.1
RELATED WORK

Refer to ~ for ~

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

Documents
1.2
MANUFACTURER/SUPPLIER DOCUMENTS

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

Waterproofing Systems NZ Ltd Product Manual (Nov 2017 edition)

Waterproofing Systems NZ Ltd Standard detail drawings

BRANZ Appraisal 995 - BituFLAME DPM Membranes

 

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.

1.3
WARRANTY - MANUFACTURER/SUPPLIER

Provide a materials warranty in the suppliers standard form.

 

Warranty period:

20 years materials (bituFLAME® double layer system)

 

15 years materials (bituFLAME® single layer system)

From:

Date of completion of the application

Supplier and manufacturer warranties are those that are freely offered by the supplier or manufacturer.  They are usually in their standard form and subject to their terms and conditions.  Waterproofing Systems NZ Ltd issue warranties on the basis that installations comply with their specification requirements and their on-site Quality Control process has been completed. Where a project is registered, WPS will provide assistance in design and product selection.

1.4
WARRANTY - INSTALLER/APPLICATOR

Warrant this work against failure and failure to follow installation specifications

Warranty period:

5 years

 

Refer to the general section for the required form of 1237WA WARRANTY AGREEMENT and details of when completed warranty must be submitted.

Check general section 1237 WARRANTIES for the date of commencement of warranties; which is normally practical completion of the contract.  Refer to the chosen conditions of contract as it may also contain information on warranties/guarantees.

Requirements
1.5
QUALIFICATIONS

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

1.6
NO SUBSTITUTIONS

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

Performance
1.7
PRE INSTALLATION MEETING

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

1.8
SPECIAL DETAILS

Where a standard 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.

1.9
WATER-TIGHTNESS

Accept responsibility for the water-tight performance of the completed bituFLAME® tanking system installation including all penetrations to comply with Waterproofing Systems NZ Ltd product manual recommendations.

1.10
PRESSURE RATING

Obtain a Geotech soil test report and identify if there are any ground water conditions which need to be allowed for or brought to the engineer's attention.  Ensure the system is capable of sustaining the designated water pressure head.  Refer to SELECTIONS for the designated water pressure head.

Where applicable confirm the designated water pressure head with the design engineer, bituFLAME® torch on tanking membrane is for use in low to medium hydrostatic applications.  For high hydrostatic situations a Rawmat™ bentonite system is recommended.

1.11
QUALITY ASSURANCE

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

 

The applicator must complete the substrate readiness check sheets and installation quality control check sheets as the job progresses on site are completed fully and faithfully for each installation area.  These must be available for inspection or a copy on request by Waterproofing Systems NZ Ltd.

2
PRODUCTS

Select the manufacturer and brand for this work and then use the PRODUCTS and EXECUTION clauses required for the particular system. Consult the manufacturer for particular requirements.

Materials

Note in particular that bituFLAME® torch on sheet products require a solid substrate.  Note:  Rawmat bentonite can be installed on compacted sub base, sheet piles, sacrificial shutters and on concrete substrates.  Rawmat can be installed onto precast panels and can also be installed on damp substrates or in inclement weather.  Refer to 4131WR WPS RAWMAT BENTONITE TANKING.

2.1
TORCH ON SINGLE LAYER TANKING MEMBRANE

BituFLAME®, an AAP modified bitumen 3mm thick waterproofing membrane with 180 gsm composite polyester reinforcement with a sand finish.  Supplied in 1m wide x 10m long rolls.

2.2
TORCH ON BASE SHEET - 2 LAYER TANKING SYSTEM

BituFLAME®, an AAP modified bitumen 3mm thick base sheet with reinforcement with a smooth surface finish.  Supplied in 1m wide x 10 m long rolls.

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.  This is particularly important on large scale tanking applications where detecting membrane puncture and other damage can be difficult.  Failure to detect such damage or puncture could result in water ingress.

2.3
SELF-ADHERED BASE SHEET MEMBRANE - TANKING FOR POLYSTYRENE BLOCKS

BituFLAME® Plura AD, a self-adhered APP bitumen 2.5mm thick base sheet with fibre reinforcement for base sheet adhesion to polystyrene blocks.  Supplied in 1m wide x 10 m long rolls.

bituFLAME® Plura AD is used as the first layer of a two layer system, this product is not covered by the BRANZ appraisal.  Second layer of 3mm bituFLAME® sand cap sheet.

2.4
TORCH ON CAP SHEET - 2 LAYER TANKING SYSTEM

BituFLAME®, an APP modified bitumen 3mm thick cap sheet with 180gsm composite polyester re-inforcement with a sand finish.  Supplied in 1m wide x 10 m long rolls.

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.  This is particularly important on large scale tanking applications where detecting membrane puncture and other damage can be difficult.  Failure to detect such damage or puncture could result in water ingress.

2.5
TORCH ON CAP SHEET - ANTIROOT TANKING MEMBRANE

BituFLAME® AR (anti-root), an APP modified distilled bitumen 4mm thick cap sheet waterproofing membrane with 180gsm composite polyester reinforcement.  BituFLAME® AR (anti-root) has the additive prevental B2 Bayer which confer a very high resistance to both root penetration as well as aggressive chemical attack from fertilizers and herbicides.  Supplied in 1m wide x 10 m long rolls.

Typically BituFlame AR Is used as part of a two layer system in conjunction with 3mm bituFLAME® smooth finish – base sheet.  For non-critical applications such as plaster boxes it can be used as a single layer systems over concrete.

 

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.  This is particularly important on large scale tanking applications where detecting membrane puncture and other damage can be difficult. Failure to detect such damage or puncture could result in water ingress.

2.6
TORCH-ON SINGLE LAYER CARPARK TANKING MEMBRANE

BituFLAME® Viaduct, an APP modified bitumen 5mm thick waterproofing membrane with a heavy duty non woven single strand composite polyester re-inforcement.  Used for  bridges, tunnels and car parks with an asphalt or concrete overlay.  Supplied in 1.m wide x 10m long rolls.

This product is not covered by the BRANZ appraisal.

Accessories
2.7
BITUPRIME® SOLVENT PRIMER

BituPRIME® quick drying, solvent based bituminous primer.  Supplied in 20 litre pails.

Delete if using water based primer.

2.8
BITUPRIME® WATER BASED PRIMER

BituPRIME® WB quick drying, water based bituminous primer.  Supplied in 20 litre pails.

Delete if using solvent primer.

2.9
BITUBOND® PRIMER ADHESIVE

BituBOND® primer adhesive, a water borne pressure sensitive primer used in conjunction with bituFLAME Plura AD for 2 layer polystyrene block tanking system.  Supplied in 10 litre pails.

Specifically designed for polystyrene block substrates.

2.10
BITUFLAME® SEALANT

BituFLAME® Sealant, a bituminous sealant formulated to be compatible with bituFLAME® membrane systems.  Supplied in 280 mil cartridges.

2.11
MS40 SEALANT

MS40 Sealant is a one component, hybrid MS poymer sealant and adhesive.  Used for penetrations and chase termination flashings in bituFLAME® systems.  Supplied in 600ml sausages.

2.12
BITUFLAME® EXTRUDED BITUMEN FILLETS

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

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 in the preparation of polystyrene blocks.

Used in the flush pointing preparation of surface groove joints to polystyrene block substrates

2.14
WPS RBC – RUBBERIZED BITUMEN COATING

Waterproofing Systems rubberized bitumen coating is a solvent free bitumen rubber liquid membrane used for penetrations and forming bitumen screeds in bituFLAME® systems.

2.15
GRIPSET ELASTOPROOF COLLAR

Gripset Elastoproof Collars are prefabricated collars used for waterproofing pipes and penetrations in bituFLAME® systems.  Available in small, medium and large.

Small collars- 120mm x 120mm suitable for up to 50mm pipes and penetrations, medium collars - 250mm x 250mm suitable for pipes and penetrations up to 110mm and large collars – 300mm x 300mm suitable for pipes and penetrations up to 150mm.

2.16
BITUFLAME® TERMINATION BAR

BituFLAME® aluminium termination bar with 8mm diameter pre-punched holes at 105mm centres for good mechanical fixing options.  Supplied in 30mm wide x 2mm thick x 3m lengths.

2.17
CORFLUTE NON RIGID PROTECTION SHEET

3.3mm thick x 1220mm wide x 2440mm long plastic Corflute protection board, lapped 50mm and joints taped.

Delete if using V Drain, Styrobeck Form Flow or Expol Styrodrain protection boards

2.18
FORM FLOW POLYSTYRENE DRAINAGE PROTECTION

Styrobeck Form Flow, made from 100% recycled expanded polystyrene (EPS) designed for retaining and basement walls.  Supplied in 2400mm x 1150mm x 90mm thick sheets.

Delete if using Corflute, V Drain or Expol Styrodrain protection boards

2.19
EXPOL POLYSTYRENE DRAINAGE PROTECTION BOARD

Expol Styrodrain polystyrene drainage boards made from 100% recycled expanded polystyrene (EPS) designed for retaining and basement walls.  Supplied in 2400mm x 1200mm x 90mm thick sheets.

 Delete if using Corflute, V Drain or Styrobeck Form Flow protection boards

2.20
V DRAIN DRAINAGE PROTECTION SHEET

Mertz Construction products, V Drain is a 8mm thick high density polypropylene (HDPE) drainage sheet with filter fabric used for residential only applications.  Supplied in 2m wide x 20m long rolls.

Membrane has discharge channels providing a drainage system that prevents the gap from clogging up with finer soil particles.

Delete if using Corflute, Styrobeck Form Flow or Expol Styrodrain protection boards.

2.21
BITUBOND® TAPE

BituBOND® Tape is a 80mm wide self adhesive flashing tape.  Supplied in 20m long rolls.

Used for taping protection board / sheet joints.

3
EXECUTION
Conditions
3.1
GENERALLY

Comply with the requirements and instructions of Waterproofing Systems NZ Ltd.

3.2
LAYOUT

If not detailed on the drawings, confirm the layout to suit site conditions and Waterproofing Systems NZ Ltd specifications.  Pre-plan the work to keep the number of membrane laps to an absolute minimum.

3.3
DE-WATERING

Maintain water level minimum 300mm below the level of the work area during the progress of the tanking work and until protective loading coats and walls are complete and fully set.

Use this clause if there is water present.  Modify to suit the circumstances if it is not part 2241 EXCAVATION.

3.4
DRAINAGE

Install a certified drainage system to remove water from foundations.  Ensure drain is protected with geotextile cloth to prevent it clogging with fines, and that it is correctly located, 150mm from the membrane and 200mm below the foundation/wall construction joint in accordance with Waterproofing Systems NZ Ltd requirements.

The drainage system should be designed to cope effectively with the anticipated volumes of water on the site.

3.5
CHECK SUBSTRATE

Check that the substrate will allow work of the required standard.  Complete any remedial work identified before commencing any work.  Substrate to comply with performance requirements of the NZBC.

Preparation
3.6
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 flat or to be crushed.

3.7
SUBSTRATE CONDITION

Ensure that the substrate is in a suitable condition to allow work of the required standard.  Ensure all surfaces are smooth, clean, dry and free from dust and dirt with no projections of sharp materials that will cause damage to the membrane or allow water to track behind the membrane.  Ensure concrete block mortar compressive strength 15MPa at 28 days.  For all substrate types the exposed surface must be flush at joints and smooth enough to achieve a full surface bond.

Co-ordinate with selected concrete masonry section to ensure requirements for flush pointing and block mortar compressive strength 15MPa at 28 days is included.

3.8
SUBSTRATE PREPARATION

Wire brush to remove projections.  Remove all debris, leaving the surface dust-free, oil-free and clean, with nothing that could diminish the adhesion of primers.  Grind off steps or sharp protrusions caused by formwork joints.  Check for live cracks and if identified install a slip layer of 3mm thick bituFLAME®.

Waterproofing Systems NZ Ltd recommends a high strength repair mortar to be used for any substrate repairs and to fill any gaps in the surface or between concrete panels.

3.9
SUBSTRATE PREPARATION- PRE-CAST CONCRETE

Ensure all concrete pre-cast joints are flush pointed to the termination height of the tanking and concrete pre-cast wall to foundation joints must be fully grouted flush with the tilt slab exposed surface.  Fill tie holes flush and smooth, and repair any surface cracks or defects with Gripset DM mixed with Gripset 11Y Latex Waterproof Additive.  Grind off steps or sharp protrusions caused by formwork joints.

3.10
SUBSTRATE PREPARATION- MASONRY

Ensure all mortar joints are flush pointed.  Repair any surface cracks or defects with Gripset DM mixed with Gripset 11Y Latex Waterproof Additive if required.

3.11
SUBSTRATE PREPARATION- POLYSTYRENE BLOCKS

Fill the manufacturing block indents and grooves with Gripset DM mixed with Gripset 11Y Latex Waterproof Additive , ensure any dents or recesses are flush pointed.

3.12
REMOVE OTHER FORMWORK

Ensure that formwork has been removed or partially removed from the other face(s) to the membrane face, to the extent that it allows moisture to escape from the concrete to ensure no vapour pressure develops beneath the membrane.

3.13
CORNERS AND UPSTANDS

Chamfer external corners and flash, install bituFLAME® extruded bitumen fillets to internal corners and upstands and then overlay with a 3mm thick x 150mm wide bituFLAME® sand finished under-flashing.

3.14
CONSTRUCTION JOINTS

Flash construction joints with a 200mm wide bandage strip of bituFLAME® sand finished, includes foundation wall joint, external and internal corners.

3.15
PRIME SUBSTRATE - CONCRETE

Check moisture is within specification, remove concrete dust and contamination; then prime insitu concrete, pre-cast concrete and masonry blocks thoroughly with bituPRIME®.  Ensure they are sufficiently cured and dry to permit the intended performance of the bituPRIME®.  Apply bituPRIME® ensuring a good even coverage.  Apply at a rate of approximately 5 m2 per litre.

3.16
PRIME SUBSTRATE - POLYSTYRENE

Apply bituBOND® primer adhesive at a rate of approximately 3m2 per litre.

Installation
3.17
WEATHER CONDITIONS

Install BITUFLAME® membranes only in fair weather with air temperature above 7°C.

Do not lay membrane in wet or misty conditions.

3.18
LAYING OUT BITUFLAME®

Unroll the BITUFLAME® membrane to relax for 30 minutes prior to laying.  In cooler conditions additional time may be required for the membrane to fully relax.

3.19
HEAT CONTROL

Control heat to ensure the membrane is fully installed to the substrate with all laps properly formed.  In two layer systems ensure full bonding between the two layers.  Do not overheat the membrane.

3.20
INSTALL BITUFLAME® - SINGLE LAYER SYSTEM

Install bituFLAME® 3mm membrane sand finished as a single layer, fully torched applied to the substrate with 100mm edge laps and 150mm end laps.  Check all laps are fully bonded and the installation is neat and tidy.

Waterproofing Systems NZ Ltd recommends the use of two layer bituFLAME® systems to give greater durability and to reduce the risk of water ingress due to damage during steel fixing etc.

3.21
INSTALL BITUFLAME® - TWO LAYER SYSTEM

Install bituFLAME® 3mm membrane smooth as a base sheet, fully torched applied to the substrate with 100mm edge laps and 150mm end laps. Check all laps are fully bonded and the installation is neat and tidy.

Install bituFLAME® 3mm membrane sand as a finished cap sheet, fully torched applied, with all sheet joints off set and centralised over the base sheet forming the finished 2 layer system.  All end laps must also be off set on the base sheet with all edge laps 100mm wide and end laps 150mm wide.  Check all laps on completion and leave as a neat and tidy finish.

3.22
INSTALL BITUFLAME® ANTIROOT - SINGLE LAYER SYSTEM

Install bituFLAME® 4mm membrane antiroot sand finished in a single layer system , fully torched applied to the substrate with 100mm edge laps and 150mm end laps.  Check all laps are fully bonded and the installation is neat and tidy.

3.23
INSTALL BITUFLAME® ANTIROOT - TWO LAYER SYSTEM

Install bituFLAME® 3mm membrane smooth as a base sheet, fully torched applied to the substrate with 100mm edge laps and 150mm end laps. Check all laps are fully bonded and the installation is neat and tidy.

Install bituFLAME® 4mm antiroot as a finished cap sheet, fully torched applied with all sheet joints off set and centralised over the base sheet forming the finished 2 layer system.  All end laps must also be off set on the base sheet with all edge laps 100mm wide and end laps 150mm wide.  Check all laps on completion and leave as a neat and tidy finish.

3.24
INSTALL BITUFLAME® - TWO LAYER SYSTEM TO POLYSTYRENE BLOCKS

Install bituFLAME® Plura AD 2.5mm thick self-adhered base sheet to the primed polystyrene substrate.  All end laps 150mm and side laps 100mm pressure rolled closed.

Install bituFLAME® 3mm sand as a finished cap sheet, fully torched applied directly onto the bituFLAME® Plura AD base sheet, all sheet joints off set and centralised over the base sheet forming the finished 2 layer system.  All end laps must also be off set on the base sheet with all edge laps 100mm wide and end laps 150mm wide.  The heat from the cap sheet application will thermally activate additional adhesion and weld base sheet laps.  Check all laps on completion and leave as a neat and tidy finish.

3.25
INSTALL BITUFLAME® VIADUCT- SINGLE LAYER SYSTEM

Install bituFLAME® Viaduct 5mm membrane sand finished as a single layer, fully torched applied to the substrate with 100mm edge laps and 150mm end laps.  Check all laps are fully bonded and the installation is neat and tidy.

3.26
PENETRATIONS

Seal and waterproof pipe penetrations to Waterproofing Systems NZ Ltd requirements.  Provide WPS MS 40 sealant over backing rods to the internal and external face of the wall and pipe junction, apply SBR bitumen  liquid tanking as bedding for the Gripset Elastoproof collar.  Apply the Gripset Elastoproof collar over with an overcoating of liquid SBR bitumen  to the collar, finish with WPS MS 40 sealant to the collar pipe junction.  As part of the bituFLAME® application flash over the Gripset components and secure with a stainless steel metal ring clamp to the pipe.

3.27
BITUFLAME® LAP JOINTS

All side lap joints to be 100mm wide and end laps 150mm wide.  All laps to be fully welded and seamed off.  In a two-layer system all laps to be off-set.  Ensure adequate heat control to ensure full lap integrity.

Ensure lap areas are kept free of foreign matter that could interfere with lap integrity.

3.28
FOUNDATION TOE OUT FLOOR TO WALL JUNCTION

For foundations projecting a toe out, generally extending 150mm or more from the struck wall, install a bituFLAME extruded bitumen fillet at the internal juction.  For a bituFLAMEsingle layer system flash over with a 200mm wide sand-finished bituFLAME flashing.  For a bituFLAME two layer systems, apply the base and cap sheets directly over the bitumen fillet.

In a full tanking envelope, protrude the under slab membrane 150mm beyond the perimeter of the footing.  When wall is struck, bring this portion of membrane up and torch to wall base.  Install the wall membrane down over the top to form a sound seal.  Ensure the 150mm flap is adequately protected from damage during construction of the walls and that foreign matter is not able to contaminate the critical lap area.

3.29
FOUNDATION TO WALL FLUSH JUNCTION FLASHING

For flush foundation to wall construction joints install 3mm thick x 200mm wide sand-finished bituFLAME® flashing to junction of foundation and wall.  before the primary bituFLAME single layer tanking membrane system is installed. Where it is a full envelope 2 layer system the flashing is not required.

Protection
3.30
PROTECTION HORIZONTAL SURFACES

Where bituFLAME® is torch applied to a concrete blinding slab place a polythene separation layer as protection and slip sheet over the exposed bituFLAME® prior to access by following trades, floor slab steel work and slab pour.  Where temporary access is required by vehicles and other construction machinery install plywood sheets as protection until no further requirement, recheck the membrane for mechanical damage.

3.31
INSTALL CORFLUTE PROTECTION SHEET

Fully protect bituFLAME® prior to backfilling against the walls.  Neatly fit 3.3mm thick Corflute overlapping 50mm and taping closed with 80mm bituBOND® tape.  Fold at all internal and external corners to ensure full protection on corner returns and tape close.

3.32
INSTALL FORM FLOW POLYSTYRENE DRAINAGE PROTECTION

Fully protect bituFLAME® prior to backfilling against the walls.  Install Styrobeck Form Flow polystyrene edge butted and taped closed with each with 80mm bituBOND® tape.

3.33
INSTALL EXPOL STRYRODRAIN POLYSTYRENE DRAINAGE PROTECTION

Fully protect bituFLAME® prior to backfilling against the walls.  Install Expol Styrodrain polystyrene sheets edge butted and taped closed with each with 80mm bituBOND® tape.

3.34
INSTALL V DRAIN DRAINAGE PROTECTION SHEET

Fully protect bituFLAME® prior to backfilling against the walls.  Install V Drain polypropylene drainage system to Waterproofing Systems NZ Ltd requirements, with edges butted and attached Geotech cloth overlapped and taped closed with 80mm wide bituBOND® tape.

Backfill and compaction
3.35
BACKFILL AND COMPACTION

Place the back fill once the vertical membrane is in place and adequately protected.  Ensure the drain coil system at the base of the tanking is installed, the specified protection system is installed correctly.  Use soil or aggregate with 30% fines and compact in layers to a minimum of 95% proctor.  In tight void situations back fill with sand compact with hand and wet down.  Ensure back fill is free from sharp objects.

3.36
BACKFILL PENETRATIONS

Back fill up to the pipe penetrations, then fully encase the pipe penetration in sand before continuing with the back fill process.  Ensure penetration pipes are not disturbed or bent from compaction.

Completion
3.37
SECTIONAL COMPLETION

As sections of the tanking are completed, arrange for inspection of the work before covering with protective sheets, walls, or slabs.  Complete the applicator's substrate readiness check sheets and installation Quality Control Sheets, and provide to them for issuing the Materials Warranty.

3.38
ACCEPTANCE
  • Arrange for an inspection of the completed work.
  • Complete the applicator's Quality Control sheets and provide to them for the issuing of the Materials Warranty.
  • Protect the membrane until completion of the contract works.
3.39
CLEAN UP

Use a light bristled broom to clean up all rubbish, dust and contaminants as the work proceeds leaving clean on completion.

3.40
LEAVE

Leave this work in a sound condition, free of any defect.

3.41
REMOVE

Remove debris, unused materials and elements from the site.

4
SELECTIONS

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

Substitutions are not permitted unless otherwise 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.

4.1
PRESSURE RATING

Designated water pressure head: ~ metres

Where applicable confirm the designated water pressure head with the design engineer.

 

bituFLAME® is recommended as a torch on tanking membrane for basement foundation and vertical walls in low to medium hydrostatic applications as a single layer system, and in medium to high hydrostatic applications as a double layer system.

 

rawMAT Bentonite is the most secure tanking system, use in high to extreme hydrostatic conditions.  Refer to 4131WR WPS RAWMAT BENTONITE TANKING.

 

bituBOND® should only be used in low hydrostatic tanking situations.  Installing bituBOND® to basement walls with another DPM product used under the slab is suitable for non-tanking applications.  Refer to 4131WP WPS BITUBOND SELF-STICK TANKING.

Membrane systems
4.2
WPS BITUFLAME® TORCH ON TANKING MEMBRANE - SINGLE LAYER SYSTEM

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIME® ~

Membrane:

3mm bituFLAME® sand finish

Options:

Substrate:

concrete, pre-cast concrete, masonry

Primer:

bituPRIME® solvent primer, bituPRIME® water based primer

Note:

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long term durability.

4.3
WPS BITUFLAME® TORCH ON TANKING MEMBRANE -TWO LAYER SYSTEM

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIME® ~

First Layer:

3mm bituFLAME® smooth finish

Second Layer:

3mm bituFLAME® sand cap sheet

Options:

Substrate:

concrete, pre-cast concrete, masonry

Primer:

bituPRIME® solvent primer, bituPRIME® water based primer

Note:

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.

4.4
WPS BITUFLAME® TORCH ON TANKING MEMBRANE - ANTIROOT SINGLE LAYER SYSTEM

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIME® ~

Brand:

4mm bituFLAME® AR (anti-root) sand finish

Options:

Substrate:

concrete, pre-cast concrete, masonry

Primer:

bituPRIME® solvent primer, bituPRIME® water based primer

Note:

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.

A bituFlame® Anti-root single layer system is only recommended for non-critical applications such as planter boxes.

4.5
WPS BITUFLAME® TORCH ON TANKING MEMBRANE - ANTIROOT TWO LAYER SYSTEM

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIME® ~

First layer:

3mm bituFLAME® smooth finish

Second Layer:

4mm bituFLAME® AR (anti-root) sand finish

Options:

Substrate:

concrete, pre-cast concrete, masonry

Primer:

bituPRIME® solvent primer, bituPRIME® water based primer

Note:

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.

4.6
WPS BITUFLAME® TANKING MEMBRANE SYSTEM - TWO LAYER TO POLYSTYRENE BLOCK

Location:

~

Substrate:

Polystyrene block

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIME primer adhesive

First layer:

2.5mm bituFLAME® Plura AD (self-stick)

Second Layer:

3mm bituFLAME® sand cap sheet

Accessories:

Gripset 11Y liquid and Gripset DM powder

 

Note:

A two layer system is strongly recommended to guard against mechanical damage and to provide effective long-term durability.

4.7
WPS BITUFLAME® VIADUCT TORCH ON TANKING - SINGLE LAYER SYSTEM

Location:

~

Substrate:

~

Primer:

bituPRIME® ~

Membrane:

5mm bituFLAME® Viaduct

Options:

Location:

Used for  bridges, tunnels and car parks with an asphalt or concrete overlay

Substrate:

Pres-cast concrete, concrete

Primer:

bituPRIME® solvent primer, bituPRIME® water based primer

Accessories - protection
4.8
CORFLUTE PROTECTION SHEET

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Brand:

Corflute

Dimensions:

3.3mm thick x 1220mm wide x 2440mm long

4.9
FORM FLOW POLYSTYRENE DRAINAGE PROTECTION

Location:

~

Supplier:

Styrobeck

Brand:

Form Flow

Dimensions:

90mm thick x 1150mm wide x 2400mm long

4.10
EXPOL POLYSTYRENE DRAINAGE PROTECTION

Location:

 

Supplier:

Expol

Brand:

Styrodrain

Dimensions:

90mm thick x 1200mm wide x 2400mm long

4.11
V DRAIN DRAINAGE PROTECTION SHEET

Location:

~

Supplier:

Mertz Construction Products

Brand:

V Drain Polypropylene grid with Geotech cloth attached

Dimensions:

8mm thick x 2m wide x 20m long

4.12
WPS BITUBOND® JOINTING TAPE

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Brand:

bituBOND® tape

Dimensions:

80mm wide x 20m long