Expanding Foam 750ml – Multi-Purpose Sealant & Insulation Foam
Achieve superior sealing, insulation, and gap-filling with our premium Bostik Sealocrete Expanding Foam 750ml. Designed for both professional and DIY use, this high-performance foam expands rapidly, offering excellent adhesion and durability.
Key Features & Benefits:
- Powerful Expansion – Expands to fill cracks, gaps, and voids effectively.
- Excellent Adhesion – Bonds to wood, metal, masonry, and most building materials.
- Water & Weather Resistant – Provides long-lasting insulation and protection.
- Easy to Apply – Comes with a precision nozzle for controlled application.
- Multi-Purpose Use – Ideal for sealing, insulation, soundproofing, and gap filling.
€9.44 (ex.VAT )
| Quantity | Discount | Unit Price |
|---|---|---|
| 1 | 0% | €9.44 |
| 2 | 5% | €8.97 |
| 3+ | 10% | €8.50 |
You may also like…
-
Preventavent Rodent Proof Mesh Air Brick Covers – Aluminium
€15.45 – €23.10 (ex.VAT ) Select options This product has multiple variants. The options may be chosen on the product page -
Highly Effective Rodent-Proof Weldmesh 6.5mm
€5.35 – €56.48 (ex.VAT ) Select options This product has multiple variants. The options may be chosen on the product page
What is Bostik Sealocrete Sealofoam Expanding Foam?
The Bostik Sealocrete Sealofoam expanding foam 750ml is a high-performance polyurethane foam designed to fill, seal, and insulate gaps in construction and repair projects. This foam expands on application, providing a strong, durable bond to surfaces such as wood, metal, brick, and concrete.
Key Benefits & Why It’s the Best Choice
- Seals Air Leaks & Gaps: Prevents drafts, reducing heating and cooling costs.
- Highly Durable: Water-resistant and long-lasting insulation properties.
- Versatile Application: Perfect for sealing gaps around doors, windows, pipes, and vents.
- Professional & DIY Friendly: Easy to use with an applicator nozzle for precise filling.
- Material: Polyurethane-based expanding foam.
- Durability: Resistant to water, weathering, and temperature fluctuations.
- Compatibility: Suitable for wood, brick, metal, plaster, concrete, and plastics.
Installation Guide: How to Use Expanding Foam
- Prepare the Surface – Ensure the area is clean, dry, and free from dust and grease.
- Shake the Canister – Shake vigorously for 30 seconds before use.
- Attach the Nozzle – Fix the included applicator for precise control.
- Apply the Foam – Dispense foam carefully, allowing it to expand.
- Let It Cure – The foam will fully expand and harden within 24 hours.
- Trim & Paint (Optional) – Once cured, excess foam can be trimmed and painted over.
Additional Tips
- Fill the cavity approximately half full and spray the foam with water.
- For large voids build up foam in layers and spray foam with water between each layer.
- Vertical gaps and cavities have to be filled from the bottom up.
- Do not overfill – Wide gaps shall be filled with several layers (wait 15-30 minutes between applications).
- If applying outdoors, protect the foam by painting or coating it with suitable material.
- Foaming at constructional elements requires advanced fire security standards.
- Ideal construction and insulation foam for filling and sealing of cavities between brickwork and window frames, window sills, roller blinds chassis etc. Insulating of pipeline mountings.
- Not suitable for applications underwater.
- After ending work, flush the adaptor and clean the valve.
Note: Polyurethane expanding foam will not adhere to polyethene, silicone and Teflon
Cleaning
- Uncured product may be removed using EVO-STIK Foam Cleaner or other expanding foam cleaner.
- Cured product can only be removed by mechanical means.
Why Choose This Expanding Foam Over Alternatives?
- Faster curing time compared to standard foams.
- Higher expansion ratio for better gap coverage.
- Improved adhesion to a wider range of materials.
- Reduced shrinkage for long-term reliability.
Specifications
This expanding foam is ideal for filling irregular and large gaps and holes, both indoors and outdoors. The propellant mixture is free of CFC’s, HCFC’s, FC’s and HFC’s. It complies with EU legislation on greenhouse gases: KOM (2003) 492 final 2003/0189 (COD).
The Foam provides excellent heat resistance, sound absorption, high ageing resistance and is resistant to mould and fungal attacks.
- Colour: Light Yellow
- Form: Aerosol Foam
- Temperature Resistance after curing: -40°C to +90°C
- Drying Times: Cured after approx. 50 to 150 mins.
- Fire Behaviour: B3
- Storage: Always store upright in cool, dry conditions between +5°C and 25°C. Store Valve up.
- Shelf Life: 18 months
PRECAUTIONS IN USE
For any application not covered above, please contact Technical Services on +353 1 8624998 or visit www.bostik.ie for advice.
Recommendations and suggestions are for guidance only, since conditions of use are completely beyond our control. For health and safety instruction, first aid measures and spillage and disposal instructions, see separate Health and
Safety Datasheet for SEALOCRETE SEALOFOAM, available at www.bostik.ie.
BOSTIK HOTLINE: Smart help +353 1 8624998
Check Bostik Sealocrete Sealofoam Expanding Foam MSDS HERE
FAQs
The Expanding Foam typically cures within 1-2 hours for a surface dry and fully cures within 24 hours.
Yes, it is weather-resistant and suitable for both indoor and outdoor applications.
Yes, once fully cured, it is water-resistant, but prolonged water exposure may degrade it over time.
Yes, once cured and trimmed, it can be painted over for a seamless finish.
It adheres well to wood, metal, brick, concrete, plaster, and plastics but may not stick to silicone or oil-coated surfaces.
This foam expands up to 2-3 times its original volume upon application.
Uncured foam can be cleaned with acetone, while cured foam must be trimmed with a knife.
This specific formula is not fire-rated, but fire-resistant expanding foams are available (please Contact Us for more info)
Yes, it has soundproofing properties and can reduce noise transmission.
When stored properly, it has a shelf life of up to 12 months from the manufacturing date.
| Weight | 0.89 kg |
|---|---|
| Dimensions | 6.5 × 6.5 × 34 cm |
Reviews
There are no reviews yet