No More Big Gaps

Selleys No More Big Gaps is an expanding foam, which cures into a semi rigid closed cell foam,
making it ideal for filling large and irregular holes or cavities such as around pipes.
  • Fast curing. Surface will be tack free within 15 minutes after application. A 3cm to 5cm deep application will be fully cured in approximately 4 hours.
  • Expands up to 2.5 times to fill those irregular and large holes around the home. Expansion will vary depending on the conditions and confinement of the space.
  • Excellent insulator, and also blocks pests, noise and birds.
  • Convenient aerosol can, no mixing required simply spray into the gaps.
  • Cured product can be cut, trimmed, sanded and painted.
  • Suitable for interior and exterior use.
  • Superior adhesion to a broad range of surfaces, resulting in a lasting finish.
  • CFC-free ozone friendly hydrocarbon propellant.

Ideal For 

  • Gaps between window and door frames and the wall, along skirting boards, around cornices, in corners or between walls and ceilings, concretes, tiles, fibre cement boards and woods.
Categories: ,
Size 750ml Aerosol can
Colour Light Beige
Full Cure Time Cures in 4 hours
Technology Polyurethane
Use Exterior, Interior

Where can this product be used?

  • Filling large irregular shaped gaps, hollows and cavities
  • Filling around pipes
  • Behind skirting boards and architraves
  • Around door and window cavities

What materials is this product suitable for?

  • Timber
  • Brick
  • Concrete
  • Plasterboard
  • Particleboard
  • Fibre cement sheeting
  • Masonry
  • Ceramic Tiles
  • Glass
  • Steel
  • Aluminium
  • Most Plastics*
  • *Not for use on polyethylene, polypropylene, Teflon, silicone or polystyrene.

How To Use

  1. Ensure the surface is clean, dry and free from dust, grease, flaking/powdery paint and old or crumbling caulk. For best performance, moisten surfaces by spraying with water (a plant sprayer is ideal).
  2. Wear gloves and eye protection. Product is difficult to remove from skin and clothing.
  3. Shake can vigorously for 60 seconds.
  4. Screw nozzle onto can valve. Do not over tighten.
  5. Turn can upside down and gently apply pressure on the trigger to extrude the product. Vary the pressure to control product flow. Fill half the space. Do not overfill as product will expand up to 2.5 times its volume over several hours.
  6. For extended usage continue to shake the can from time to time.
  7. Clean up any overspray and spillage immediately with a dry cloth. Acetone/nail polish remover will assist.
  8. Product will be tack free in 15 minutes and fully cured in approximately 4 hours. Once cured, product can be cut back with a sharp knife or sanded with a sanding block.


  • Not suitable for use as a fire barrier.
  • Not suitable for manufacture of floatation aids or life saving devices.
  • Will not block rats and mice where access holes are in current use.
  • *Not for use on polyethylene, polypropylene, Teflon, silicone or polystyrene.

Handy Tips

  • Use the gloves enclosed in the lid
  • Full expansion is not immediate, so don’t overfill the hole.
  • If you spray a small amount of moisture onto the surface, or wipe it with a wet rag, it will increase the expansion.
  • If using the product outdoors, paint over the application to improve its durability.
  • If a hole is greater than 5cm, apply once and allow the product to fully cure, which is approximately 4 hours and then apply for a second time.

Clean Up

  • Clean up any overspray and spillage immediately while still wet using a dry cloth. Acetone/Nail polish remover will assist.
  • Once cured, product can only be removed mechanically by sanding, grinding or
    scraping away.

Data Sheet

SDS-NO More Big Gaps 750ml

TDS- No More Big Gaps 750ml