4131WB
WPS BITUBOND® SELF-STICK 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 bituBOND® self-adhesive tanking membrane for underslab, foundation and vertical wall applications.

It is used:

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

 

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.

 

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.  Refer to 4131WP WPS BITUFLAME TORCH ON TANKING.

 

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

1.1
RELATED WORK

Refer to ~ for ~

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

1.2
ABBREVIATIONS AND DEFINITIONS

Refer to the general section 1232 INTERPRETATION & DEFINITIONS for abbreviations and definitions used throughout the specification.The following abbreviations apply specifically to this section:

 

APP

Atactic Polypropylene

SBS

Styrene Butadine Styrene

WPS

Waterproofing Systems Ltd

Documents
1.3
MANUFACTURER/SUPPLIER DOCUMENTS

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

Waterproofing Systems NZ Ltd Product Manual (March 2017 edition)

Standard detailed drawings

Substrate readiness check sheet – bituBOND®

Quality Control check sheet – bituBOND®

BRANZ Appraisal 558 - BituBOND® Self-adhesive Damp-proof Membrane

 

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

 

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 - MANUFACTURER/SUPPLIER

Provide a materials warranty in the suppliers standard form.

 

15 years:

for materials and accessories of bituBOND® single layer system, which includes an appropriate maintenance statement and schedule

 

  • Provide this warranty on the manufacturer/supplier standard form.
  • Commence the warranty from the date of completion of application.

 

Refer to the general section 1237 WARRANTIES for additional requirements

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.

1.5
WARRANTY - APPLICATOR

Provide an applicator’s warranty for the system against failure and failure to follow installation specifications

 

7 years:

for a workmanship warranty

 

  • Provide this warranty on the installer's standard form.
  • 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.

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
1.6
QUALIFICATIONS

Waterproofing work to be carried out by experienced, fully qualified applicators approved by Waterproofing Systems NZ Ltd to install the bituBOND® tanking system.

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

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 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 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
WATER-TIGHTNESS

Accept responsibility for the water-tight performance of the completed membrane installation including all penetrations.

1.11
PRESSURE RATING

Obtain a Geotech soil test report and identify if there are any 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, 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.

1.12
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 substrate readiness check sheets and installation Quality Control check sheets as the job progresses on site and 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
Materials

Note in particular that bituBOND® self-adhesive sheet products require a solid substrate.

2.1
SELF ADHESIVE TANKING MEMBRANE

BituBOND® SBS / APP hybrid modified self-adhesive 2.0mm thick membrane with cross laminated polyethylene carrier to the top side and an adhesive layer protected by siliconized release plastic to the underside and a 100mm wide selvedge edge on the external face with a siliconized release plastic for the overlap joint.  Supplied in 1m wide x 20m long rolls.

bituBOND® should only be used in low hydrostatic tanking situations.  Installing bituBOND® tanking to basement walls with another DPM product used under the slab is suitable for non-tanking applications.

Accessories
2.2
BITUPRIME® SOLVENT PRIMER

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

For use on concrete and masonry substrates.

2.3
BITUBOND® CONTACT ADHESIVE

BituBOND® Contact adhesive, solvent contact adhesive for masonry substrates where an almost instant bond is required.  Supplied in 20 litre pails.

For use on concrete and masonry substrates where cool conditions prevent the use of BituPRIME® solvent borne primer.  BituBOND® Contact adhesive allows a 20 minute tack and instant bond in cool conditions.

2.4
BITUBOND® WATER BASED PRIMER ADHESIVE

BituBOND® Primer adhesive, a water borne pressure sensitive primer adhesive.  Supplied in 10 litre pails.

For use on polystyrene block substrates.

2.5
BITUBOND® SEALANT

bituBOND® Sealant, a bituminous sealant available in 310ml cartridge, specially formulated to be compatible with bituBOND® membrane.

2.6
BITUFLAME EXTRUDED FILLETS

BituFLAME® extruded bitumen fillets.  Supplied in 25mm x 35mm x 1.1m lengths.

2.7
BITUBOND® TERMINATION BAR

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

2.8
WPS MS 40 SEALANT

WPS MS 40 single component, high strength, polyurethane sealant.

Used as part of a system to seal penetrations and for termination bar installation.

2.9
WPS BITUMEN GENERAL PURPOSE SEALANT

WPS Bitumen General Purpose Sealant is a bitumen sealant that is 100% compatible with the bituBOND® polymer.

Used along all knife cut edges  and for sealing bituBOND® membrane into chase in substrate.  Used for sealant directly in contact with bituBOND® material.

2.10
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.

Used .in the preparation of joints to polystyrene block substrates and to repair any cracks / defects in concrete substrates.

2.11
FLEXIBLE CEMENTITIOUS MEMBRANE

Gripset 2P, a SBS two component rubberised liquid membrane system used in pipe penetration detailing and ground transition detailing.  To be protected in exposed situations with WPS acrylic HiBuild system.

Used to as part of a system to seal pipe penetrations and ground transition detailing.

2.12
GRIPSET ELASTOPROOF COLLAR

Gripset Elastoproof collar, size to suit penetration.

Used to as part of a system to seal pipe penetrations.  Not suitable for steel pipe penetrations, refer to Waterproofing Systems NZ Ltd for advise.

2.13
STAINLESS STEEL METAL RING CLAMP

Stainless steel metal ring clamp as required by Waterproofing Systems NZ Ltd for pipe penetrations.

Used to as part of a system to seal pipe penetrations.  Not suitable for steel pipe penetrations, refer to Waterproofing Systems NZ Ltd for advise.

2.14
BITUBOND® JOINTING TAPE

BituBOND® tape, 80mm wide, used to join polythene underslab DPM to bituBOND® and for protection board sheet joints.  Supplied in 20m long rolls.

2.15
NON RIGID PROTECTION SHEET

3.3mm thick x 1220mm wide x 2440mm long plastic Corflute protection board.

2.16
V DRAIN DRAINAGE PROTECTION SHEET

Mertz Construction products, V Drain is a 8mm thick high density polypropylene (HDPE) drainage sheet with filter fabric.  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.

2.17
STYROBECK POLYSTYRENE DRAINAGE PROTECTION

Styrobeck Form Flow polystyrene made from 100% recycled expanded polystyrene (EPS) material, lightweight and allows water to drain easily down the drainage coil system.  Supplied in 2400mm x 1150mm x 90mm thick sheets.

2.18
EXPOL POLYSTYRENE DRAINAGE PROTECTION BOARD

Expol Styrodrain polystyrene drainage boards made from 100% recycled expanded polystyrene (EPS) designed for retaining and basement walls.  StyroDrain allows water to easily drain water down to the drain coil system.  Supplied in 2400mm x 1200mm x 90mm thick sheets.

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 of 2241 EXCAVATION.

3.4
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
3.5
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.

3.6
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 oil, dust and dirt with any holes flushed and any projections ground off and no sharp materials that will cause damage to the membrane or allow water to track behind the membrane.  Check moisture content not commence installation until readings for the whole area show 75% relative humidity or less.

bituBOND® can be used on both concrete and polystyrene block substrates.

3.7
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.

3.8
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.

3.9
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.

3.10
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.

3.11
INTERNAL & EXTERNAL CORNERS

External corners to be chamfered and flashed with bituBOND® membrane.  Install BituFLAME® extruded bitumen fillets to all internal junctions.

All flashing, chamfering and coving to Waterproofing Systems NZ Ltd specifications.

3.12
CONSTRUCTION JOINTS
  • Flush foundation wall construction joints to be flashed with a 200mm wide strip of bituBOND® tanking membrane.
  • Toe out foundation joints install bituFLAME extruded bitumen fillets and then flash with a 200mm wide strip of bituBOND tanking membrane.
  • Masonry block foundation joints (10mm) insert a 10mm backer rod 5mm deep, infill flush with WPS MS40 PU sealant, flash over with a 200mm wide strip of bituBOND membrane.
3.13
PRIME CONCRETE

Prime insitu concrete, concrete tilt panels and masonry block substrates thoroughly with bituPRIME® at a coverage rate of 5 - 6m2 per litre, depending on the porousness of the substrate,  ensuring a good even coverage and penetration. as recommended by Waterproofing Systems NZ Ltd.  Use BituBOND® Contact adhesive if due to cool conditions the use of bituPRIME® is not suitable.

3.14
PRIME POLYSTYRENE

Prime polystyrene block substrates thoroughly with bituBOND® Primer adhesive at a covreage rate of 3m2 per litre ensuring a good even coverage and penetration as recommended by Waterproofing Systems NZ Ltd.

3.15
ALLOW PRIMER TO DRY

Allow the primer to dry as recommended by Waterproofing Systems NZ Ltd.  Do not prime more than can be covered in one working day.  Prevent contamination of the primed surface prior to application of the membrane.

Installation
3.16
WEATHER CONDITIONS

Install bituBOND® membranes only in fair weather with air temperature above 5°C.  Do not lay membrane in wet or misty conditions.  In cooler temperatures use a hot air gun to warm the back of the rolls during installation.

3.17
LAYING OUT BITUBOND®

Lay out and allow the bituBOND® membrane to relax for 30 minutes prior to laying.

3.18
INSTALL BITUBOND®

Fully adhere bituBOND® membrane to the substrate to Waterproofing Systems NZ Ltd installation specifications.  Install bituBOND® by progressively peeling off the release plastic and firmly placing and pressure rolling the membrane onto the substrate.  Roll to ensure good adhesion.

3.19
BITUBOND® LAP JOINTS

Remove the selvedge release paper from the lap and lap the next roll 100mm over the last sheet.  All side lap joints to be 100mm wide and end laps 150mm wide.  To ensure full bonding ensure the lap area is kept free of foreign matter.  Apply pressure to membrane and particularly lap areas.

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

3.20
BITUBOND® FLOOR TO WALL JUNCTION

For a full bituBOND® tanking envelope extend the bituBOND® 200mm beyond the perimeter of the footing and ensure the 200mm flap is adequately protected from damage during construction of the walls and that foreign matter is not able to contaminate this critical lap area.

 

When the wall is struck, for flush foundations with a vertical wall, flash with a 200mm wide bituBOND® membrane flashing across the junction.  When wall is struck, for toe out foundation, install using a blow torch a preformed extruded bituFLAME® bitumen fillet at the internal junction followed by a 200mm wide bituBOND® membrane flashing centralised over the extruded fillet.  Bring the protected underslab bituBOND® membrane up over the foundation and onto the foundation ready for the vertical wall bituBOND® installation and jointing to it in both situations.

 

Where DPM is the underslab waterproofing, install a 200mm wide under flashing centralised over the floor  to wall junction, end laps 200mm.  Install the wall membrane down over the top of the under flashing to the bottom of the footing.  Dress the bottom edge to form a sound seal.  Bring the DPM up the wall, over the top of the top of the bituBOND® membrane and tape to the face of the membrane.

3.21
PENETRATIONS

Seal and waterproof pipe penetrations to Waterproofing Systems NZ Ltd requirements.  Install a backer rod between the pipe penetration and the substrate, install WPS MS 40 sealant into the recess backing up on the backer rod and terminating at the external wall finish.  Using Gripset 2P install a Elastoproof pipe collar over coating and sealing into place. As part of the bituBOND® SBS application flash over the Gripset components and secure with a stainless steel metal ring clamp to the pipe.

Not suitable for steel pipe penetrations, refer to Waterproofing Systems NZ Ltd for advise.

3.22
TERMINATION INTO CHASE

Dress bituBOND® membrane  to all perimeter edges into an approx 20mm x 10mm chase.  Seal bituBOND® membrane termination edge with bituBOND® Bitumen Sealant and the external metal chase flashing to concrete substrate with WPS MS40.

3.23
TERMINATION WITH TERMINATION BAR

Terminate bituBOND® membrane to all perimeter edges with bituBOND® bitumen sealant and bituBOND® Termination Bar centralized over the membrane, cut edge and sealant, then mechanically fix to provide a compression seal.

3.24
TERMINATION WITH GRIPSET 2P

Install Gripset 2P membrane in accordance with manufacturer's requirements to the ground transition area prior to the installation of bituBOND® membrane.  Install bituBOND® membrane lapped 200mm over Gripset 2P and terminate bituBOND® membrane perimeter edge with bituBOND® bitumen sealant and bituBOND® Termination Bar centralized over the membrane, cut edge and sealant, then mechanically fix to provide a compression seal.

 

Ensure any above ground, exposed faces of Gripset 2P membrane are finished with WPS Acrylic Coating System.

Protection
3.25
PROTECT UNDERSLAB SURFACES

After laying is complete the membrane can be protected until the floor slab is poured by covering the tanking with DPM sheets.This situation arises when there is an extended delay between the membrane installation and the placement of the floor slab or where vehicles and other construction machinery is being taken over the membrane.

3.26
INSTALL PROTECTION SHEETS - CORFLUTE

Neatly fit 3.3mm thick corflute boards dressing down over foundation footings with 50mm wide overlapping joints taped with 80mm wide bituBOND® tape.  Seal the top edge of Corflute with bituBOND® tape to prevent back fill getting between the bituBOND® and coreflute sheets.

Delete if using V Drain or polystyrene protection sheets.

3.27
INSTALL DRAINAGE PROTECTION SHEETS - V DRAIN SYSTEM

Install WPS 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.

Delete if using Corflute or polystyrene protection sheets.

3.28
INSTALL POLYSTYRENE DRAINAGE PROTECTION

Install selected polystyrene drainage protection boards with edges butted and taped closed with 80mm bituBOND® tape.

Delete if using V Drain or Corflute protection sheets.

Drainage & Backfill
3.29
DRAINAGE, BACKFILL AND COMPACTION

Install drainage coil fitted with a filter sock, position 150mm out from the foundation and 200mm below floor wall construction joint in accordance with Waterproofing Systems NZ Ltd detailed drawings.  Ensure the drain coil is installed to the required falls and connects into the storm water system.  Surround the drainage coil with 10mm to 15mm stones before the back fill is installed.  Back fill with free draining stone together with 30% grit sand fines to ensure compaction.  Compact at 600mm intervals ensuring mechanical services and pipes are not broken during compaction.

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

3.30
BACKFILL PENETRATIONS

Back fill up to the pipe penetrations, then fully encase the pipe penetration in sand before continuing with the back fill process.

Completion
3.31
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 Quality Control Sheets, and provide to them for issuing the Materials Warranty.

3.32
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.
3.33
CLEAN UP

Clean up as the work proceeds.

3.34
LEAVE

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

3.35
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 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.

4.1
PRESSURE RATING

Designated water pressure head: ~ metres

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

Membrane system
4.2
WPS BITUBOND® SELF ADHESIVE TANKING MEMBRANE

Location:

~

Substrate:

~

Supplier:

Waterproofing Systems NZ Ltd

Primer:

bituPRIMER®

Membrane

bituBOND®

Options:

Substrate:

Concrete, precast concrete panels, masonry, polystyrene blocks

Primer:

Typically bituPRIMER® for concrete & masonry.  Use BituBOND® Contact adhesive for concrete & masonry substrates  if due to cool conditions the use of bituPRIME® is not suitable.

Use bituBOND® Primer adhesive for polystyrene blocks.

Membrane:

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.

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.  Refer to 4131WP WPS BITUFLAME TORCH ON TANKING.

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

Accessories - protection
4.3
CORFLUTE PROTECTION SHEET

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Brand:

Corflute

Dimensions:

1220mm wide x 2440mm long x 3.3mm thick

4.4
V DRAIN SYSTEM DRAINAGE PROTECTION SHEET

Location:

~

Supplier:

Mertz Construction products

Brand:

V Drain Polypropylene vertical drainage system with Geotech cloth attached

Dimensions:

2m wide x 20m long x 8mm thick

4.5
FORM FLOW POLYSTYRENE PROTECTION SHEET

Location:

~

Supplier:

Styrobeck Plastics

Brand:

Styrobeck Form Flow

Dimensions:

1150mm wide x 2400mm long x 90mm thick

4.6
EXPOL POLYSTYRENE DRAINAGE PROTECTION

Location:

~

Suppliers:

Expol

Brand:

Styrodrain

Dimensions:

1200mm wide x 2400mm long x 90mm thick

4.7
BITUBOND® JOINTING TAPE

Location:

~

Supplier:

Waterproofing Systems NZ Ltd

Brand:

bituBOND® tape

Options:

Location

Used to join polythene underslab DPM to bituBOND® and for protection board sheet joints