RLA Foam Filler is a professional-grade, high-expanding polyurethane foam engineered to provide a fast, permanent, and reliable solution for filling and sealing gaps, joints, and cavities. Designed for the demands of the job site, it forms an airtight and moisture-resistant seal in a single application, effectively eliminating noise, cold air, dust, and draughts. Its powerful adhesive properties ensure a strong bond to common building surfaces like timber, concrete, and steel, delivering a versatile solution that gets the job done right the first time.
Potential Outcome: Applying below 5°C results in significantly reduced foam yield and dramatically slowed cure times, impacting job schedules and performance.
Adheseal Best Practice: Always ensure both the can and the substrate are at a suitable temperature (above 5°C). Storing the product at room temperature for at least 12 hours prior to use guarantees predictable expansion and curing.
Potential Outcome: The high expansion force can deform or damage surrounding materials like window frames or plasterboard if the void is overfilled, leading to rework.
Adheseal Best Practice: Fill cavities to approximately one-third of the total space. This allows ample room for the foam to expand and create a tight seal without exerting damaging pressure on substrates.
Ensuring a new window or door frame is not only fixed securely but also perfectly insulated against air and moisture leakage is critical to preventing costly callbacks and guaranteeing client comfort.
After mechanically fixing the frame, apply a bead of RLA Foam Filler into the cavity between the frame and the building structure. Fill the void to about 30-40% capacity. The foam will expand to create a complete, airtight seal that also adds stability and provides excellent thermal and acoustic insulation.
Lightly misting the substrate with water before application will accelerate the moisture-cure process, especially in dry conditions, helping you achieve a full seal faster.
Sealing irregular gaps around pipes, conduits, and wiring penetrations through walls is essential for maintaining the building's thermal envelope and preventing the entry of pests, dust, and noise.
Direct the applicator tube deep into the penetration and apply RLA Foam Filler to roughly one-third of the cavity's depth. The foam will expand to completely seal around the services, bonding to both the pipe/conduit and the wall substrate to form a durable, insulating plug.
For large cavities, apply the foam in stages or layers. This ensures a more controlled expansion and a consistent cure throughout the depth of the void.
Yes, once the foam has fully cured (approximately 8 hours), it can be cut, sanded, and painted to match the surrounding surface. For outdoor applications, it is highly recommended to paint or coat the cured foam to protect it from discolouration and degradation caused by UV light exposure.
Only fill the cavity to approximately one-third (33%) of the space. RLA Foam Filler is a high-yield product that expands up to 45 times its original size. Under-filling allows it to expand and create a tight, complete seal without exerting excessive pressure that could deform substrates like window frames.
Absolutely. RLA Foam Filler uses a moisture-cure system. To accelerate the curing process, you can lightly dampen the surfaces with a water mist spray prior to application. You can also lightly mist the applied foam itself. This introduces the moisture needed for a faster, more efficient cure, especially in dry, low-humidity environments.
For non-porous surfaces, uncured foam can be cleaned off by wiping immediately with a solvent-moistened cloth. If foam gets on carpet or textiles, do not attempt to wipe it. Allow it to fully cure, then remove it mechanically by carefully cutting or scraping it away.
Application / Use Case | Key Benefit | Primary Trades |
---|---|---|
Fixing and insulating door and window frames | Provides stability while creating an airtight seal to eliminate draughts and noise. | Builders, Carpenters, Joiners |
Filling and sealing gaps, joints, and cavities | Expands up to 45x to completely fill irregular voids, stopping dust and air movement. | All Trades |
Sealing wall penetrations for services | Creates a fast, permanent seal around pipes and conduits to block pests and draughts. | Plumbers, Electricians |
Insulating electrical outlets and water pipes | Offers excellent thermal insulation to improve energy efficiency and prevent condensation. | Electricians, Plumbers, Remedial Contractors |
Proper preparation is key to achieving maximum yield and adhesion. Ensure all surfaces are correctly prepared before starting.
Surfaces must be clean and free from all loose material, dust, oil, and grease. Cover and protect surrounding areas to prevent contact with the foam.
Ensure the can is at room temperature (at least 12 hours). Shake the can vigorously 15-20 times to thoroughly mix the contents before screwing on the application tube and trigger.
Apply the foam in a controlled manner to achieve a complete fill without causing damage from over-expansion.
Invert the can and direct the tube into the cavity. Apply steady pressure to the trigger. Fill the cavity to approximately one-third (33%) of the space to allow for expansion.
For larger or deeper cavities, apply the foam in stages or layers. This allows each layer to cure properly and ensures a consistent fill throughout the void.
Once the foam has cured, it can be finished to create a clean, professional appearance.
After approximately 8 hours, excess foam can be trimmed with a sharp knife. The surface can then be sanded smooth and painted to match the surrounding area.
Always wear protective gloves, overalls, and chemical goggles or a face shield. Due to isocyanate content, respiratory protection is mandatory in case of inadequate ventilation.
Use only outdoors or in a well-ventilated area. If working indoors, ensure local exhaust ventilation is adequate to maintain air concentrations below exposure standards.
Extremely flammable aerosol. Keep away from all ignition sources including heat, sparks, open flames, and hot surfaces. Do not smoke. Do not pierce or burn the can, even after use. Protect from sunlight and do not expose to temperatures exceeding 50°C.
Seek medical attention immediately in all cases of serious exposure.
Ensure surfaces are clean, structurally sound, and free from dust, oil, grease, and any loose material. Lightly dampen the substrate with a water mist immediately prior to foam application to improve adhesion and accelerate curing.
For standard applications on sound surfaces, no primer is necessary. Proper surface cleaning and pre-dampening are sufficient for excellent adhesion.
Surfaces such as galvanised steel, aluminium, glass, and compressed cement-sheet must be clean and free from contaminants. Lightly dampen the surface with a fine water spray to promote the moisture-curing reaction.
Adhesion to clean, non-porous surfaces is excellent without a primer. Ensure all oils or residues are thoroughly removed before pre-dampening and application.