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GRIPSET BRW PF Squares: A Technical Overview
GRIPSET BRW PF Squares are engineered for rapid, reliable moisture protection at critical intersections and penetrations. The butyl rubber backing delivers instant, high-strength adhesion to a wide range of surfaces without the need for primers on clean, stable substrates. With excellent deformability and thermal stability, these 0.8 mm thick sealing pads conform to irregularities while maintaining rupture and tear resistance. They can be finished over immediately with Gripset membranes, adhesives, renders, coatings, mortars, or screeds — eliminating drying or curing delays on site. This makes them ideal for waterproofing, roofing, and general construction detailing.
Core Features & Specifications
- Peel-and-stick, primer-less installation on clean, stable substrates
- Immediate readiness for finishing with compatible Gripset products
- Excellent adhesion across porous and non-porous materials
- Flexible and easily deforms to surface irregularities
- High rupture and tear resistance for durability in service
- Thermally stable from -40 °C to 100 °C
- Solvent-free and non-toxic composition
- Compatible with cement-based finishes, tile adhesives, renders, and texture coatings
- Supplied in 250 mm × 250 mm squares, 0.8 mm thick
The GRIPSET BRW PF Squares Advantage
- Speeds up detailing work — no drying or curing required
- Eliminates the need for multiple products at joint intersections
- Maintains adhesion performance even in cold temperatures
- Prevents moisture ingress and provides vibration/flex protection
- Australian-designed for high-performance waterproofing and roofing applications
Proactive Troubleshooting
Scenario: Installing over damp or contaminated surfaces
Potential Outcome: Poor adhesion leading to moisture ingress and detailing failure.
Adheseal Best Practice: Ensure surfaces are dry, clean, and free of contaminants. For damp substrates, apply Gripset E60 vapour barrier primer before installation.
Scenario: Using as exposed flashing or trafficable surface
Potential Outcome: Reduced durability and possible material degradation under environmental exposure.
Adheseal Best Practice: Always finish over with a compatible surface covering — membranes, coatings, or cement-based finishes — and do not install in areas subject to direct traffic.
Applications in Practice: Trade Scenarios
For Waterproofers (On-Site Applicator): Puddle Flange Sealing
The Professional's Challenge
Creating a watertight seal around puddle flanges without waiting for primers or curing time, while ensuring compatibility with liquid membranes.
The Adheseal Solution: Engineered Certainty in Practice
Apply BRW PF Square directly over the flange edge and substrate in one piece, ensuring the fabric face is exposed for immediate membrane application.
Best Practice Note
Use a spatula or sponge to press the pad into place, eliminating air pockets for full contact before applying subsequent finishes.
For Roofers (Remedial Specialist): Patching Metal Roof Pinholes
The Professional's Challenge
Performing quick, effective patching on metal roofs to prevent water ingress until a permanent system is applied.
The Adheseal Solution: Engineered Certainty in Practice
Apply directly to clean, dry metal, pressing firmly to achieve immediate adhesion and weather resistance until top-coated or covered.
Best Practice Note
For maximum durability, finish over with Gripset membrane or compatible coating within 48 hours of patching.
Frequently Asked Questions
Do BRW PF Squares require a primer before installation?
On dense, non-porous and dust-free surfaces, priming is not required. For highly porous or dusty substrates, apply Gripset GP, E60, or XPRESS H20 PRIMER PLUS. Use Gripset E60 on damp substrates or those subject to rising damp.
Can these squares be left exposed to weather?
No. BRW PF Squares are not designed for use as exposed flashing or exposed joint seals. Always finish over with a compatible membrane, coating, or cement-based finish.
What size are the BRW PF Squares?
Each square measures 250 mm × 250 mm and is 0.8 mm thick, with a white fabric face and grey butyl backing.
Can BRW PF Squares be used over expansion joints?
No. These squares are not suitable for covering expansion joints. Use appropriate joint sealing systems designed for movement capability.
At what temperatures can I apply BRW PF Squares?
Installation should take place when surface temperatures are between 5 °C and 30 °C. Service temperature range is from -40 °C to 100 °C.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Sealing puddle flanges in wet areas | Creates a waterproof seal around floor wastes without curing time | Waterproofers, Tilers |
| Detailing around internal/external pipe penetrations | Instant adhesion prevents water ingress and allows immediate finishing | Waterproofers, Plumbers, Builders |
| Joint intersection sealing | Eliminates complex detailing at internal/external corners | Waterproofers, Builders |
| Bridging transitions between different substrates | Accommodates minor movement and provides a continuous seal | Waterproofers, Renovators |
| Under-tile waterproofing reinforcement | Improves tear resistance and bond strength for membrane systems | Waterproofers, Tilers |
Applying GRIPSET BRW PF Squares: Enhanced Protocols & Best Practices
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Surface Preparation
Ensure all substrates are clean, sound, smooth, dry, and free of contaminants such as dust, oil, grease, wax, laitance, release agents, coatings, moss, and algae. Remove structurally unsound layers mechanically and repair voids or cracks with appropriate Gripset repair mortars.
Mechanical Cleaning
Use grinding, abrasive blasting, or sanding to remove stubborn coatings or contaminants.
Dust Control
Vacuum or brush thoroughly; seal porous or dusty substrates with Gripset GP, E60, or XPRESS H20 PRIMER PLUS.
Timing: Complete substrate preparation immediately before installing to prevent re-contamination.Pro Tip: For damp or moisture-affected substrates, apply Gripset E60 vapour barrier primer before installing squares. -
Positioning the Square
Remove the release paper from the butyl rubber side. Position the square with the fabric face upwards, aligning to fully cover the intended detailing area.
Dry Fit
Before removing the backing, dry-position the square to confirm fit and alignment, especially over flanges or penetrations.
Cutting for Penetrations
Using a sharp knife, cut an aperture in the centre to fit around pipes, puddle flanges, or other penetrations.
Timing: Prepare cuts before installation to avoid handling after adhesion begins.Pro Tip: Mark alignment points on the substrate for precise placement. -
Adhering the Square
Press the square into place using a spatula, sponge, or cloth, working from the centre outwards to eliminate air pockets and creases. Ensure full contact between the butyl layer and the substrate.
Firm Pressure
Apply even pressure across the entire square to maximise adhesion.
Edge Sealing
Check that all edges are firmly bonded; re-press if any lifting occurs.
Timing: Finishes can be applied immediately after adhesion is confirmed.Pro Tip: Maintain application temperatures between 5 °C and 30 °C for best adhesion. -
Finishing Over
Apply Gripset membranes, adhesives, renders, mortars, coatings, or screeds directly over the fabric face. Ensure overlap and integration with adjacent waterproofing or finishes.
Membrane Integration
Feather membrane over the square to blend with the surrounding area and avoid ridges.
Cement-Based Finishes
Key finish into fabric face for maximum bond strength.
Timing: Finishes may be applied immediately; no drying time is needed.Pro Tip: For external areas, ensure the square is fully encapsulated under the finish to prevent weather exposure.
Limitations & Safety
Product Limitations
Cannot be applied over damp or moisture-affected surfaces. For such cases, first seal with Gripset E60 vapour barrier primer.
Not compatible with solvent-based materials applied directly over the squares.
Not designed for use as exposed flashing or exposed joint seal in external applications — must be finished over with a surface covering.
Not suitable as a trafficable surface or for use over expansion joints.
Apply only when surface temperature is between 5 °C and 30 °C to ensure optimal adhesion and durability.
Safety & Handling Requirements
Personal Protective Equipment
While the squares are solvent-free and non-toxic, when applying with membranes or primers, wear appropriate PPE as recommended in the associated product's Safety Data Sheet — including gloves, eye protection, and suitable work clothing.
Ventilation Requirements
No special ventilation required for the squares themselves. Follow ventilation guidance for any primers, membranes, or finishes applied over them.
Fire & Handling Precautions
Store in dry, internal conditions at room temperature. Keep away from direct heat sources. Not affected by frost or cold floors. Do not expose to open flames or high-heat environments.
Emergency First Aid
Eyes:
If debris or primer/membrane contacts eyes, rinse immediately with clean water and seek medical attention if irritation persists.
Skin:
Wash skin with soap and water after contact with associated primers or membranes. Discontinue use if irritation develops.
Inhaled:
Move to fresh air if vapours from primers or membranes are inhaled in high concentration. Seek medical advice if symptoms occur.
Swallowed:
Rinse mouth and seek medical attention immediately. Do not induce vomiting unless directed by a medical professional.
Always consult the SDS for any membranes, primers, or adhesives used with this product for full safety details.
GRIPSET BRW PF Squares Application Guide
Galvanised Iron, Zincalume, Copper, Aluminium, Colorbond & Most Metals
Surface Preparation
Clean to bare, dry, dust-free metal. Remove oil/grease, oxidation, and loose coatings. Ensure no sharp protrusions. Cut the square to suit if required.
Primer Requirements
Primer not required on clean, dense non-porous metal.
If residual dust remains, seal first using GRIPSET GP, E60 or XPRESS H20 PRIMER PLUS as appropriate.
GRIPSET GP / E60 / XPRESS H20 PRIMER PLUS (as required)Concrete (Primed or Dense) & Masonry
Surface Preparation
Allow new concrete to cure (28 days). Surface must be smooth, dry and free of laitance, curing compounds, dust and contaminants. Fill/level voids and non-structural cracks before application.
Primer Requirements
Primer optional on dense, dust-free concrete.
For highly porous or dusty surfaces, prime/seal first (GP, E60 or XPRESS H20 PRIMER PLUS). For residual moisture/rising damp, use Gripset E60 before applying squares.
GRIPSET GP / E60 / XPRESS H20 PRIMER PLUSCompressed Fibre Cement Sheeting
Surface Preparation
Sheets fixed per manufacturer, clean, smooth and dry. Remove dust and residues. Ensure joints are stable; repair pitted areas prior to installation.
Primer Requirements
Primer optional; seal if dusty or highly porous.
Prime with GP or XPRESS H20 PRIMER PLUS if surface porosity/dust is evident.
GRIPSET GP / XPRESS H20 PRIMER PLUSPlasterboard (Wet-Area Grade)
Surface Preparation
Confirm boards are suitable for wet areas and fixed true. Clean and dry; remove dust and loose paper. Smooth minor undulations before detailing.
Primer Requirements
Primer optional; seal dusty surfaces.
Use GP or XPRESS H20 PRIMER PLUS where board surfaces shed dust.
GRIPSET GP / XPRESS H20 PRIMER PLUSTimber
Surface Preparation
Ensure substrates are rigid, sound and dry. Remove dust/resins. Smooth sharp edges or splinters that may puncture the pad.
Primer Requirements
Primer optional; seal if dusty or porous.
Prime/seal with GP or XPRESS H20 PRIMER PLUS if required.
GRIPSET GP / XPRESS H20 PRIMER PLUSGlazed Surfaces, Marble/Granite/Ceramics, Plastics & Polycarbonate
Surface Preparation
Thoroughly clean to remove release agents, polishes and residues. Surface must be dry and stable; lightly abrade only if manufacturer allows.
Primer Requirements
Primer not required on clean, dense non-porous surfaces.
If contamination or low surface energy is suspected, conduct an adhesion test and use GP primer if needed.
Adhesion test; GRIPSET GP if requiredInstallation method: Remove release paper (butyl side), position with fabric face up, press firmly using a spatula/sponge/cloth to expel air pockets and creases. Finishes (membranes/coatings/cement-based) may be applied immediately.
Leak control flanges: Position the square to bridge the flange edge and substrate; cut an aperture to reveal the waste before finishing over.
Moisture & damp: Do not apply over damp substrates. Where residual moisture/rising damp exists, first seal with Gripset E60.
Temperature: Apply when surface temperature is between 5 °C and 30 °C. Service temperature: −40 °C to 100 °C.
Compatibility: Do not use solvent-based materials directly over the squares. Always finish over; not for exposed flashing, exposed joint seals, trafficable surfaces, or expansion joints.
Size: 250 mm × 250 mm squares, 0.8 mm thick; colour: white fabric face, grey butyl backing.
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