Industrial Floor Coatings · Epoxy Coatings · Polyurea Coatings · Concrete Coatings

Blowerproof Airtight Coating

Blowerproof creates a seamless airtight seal on almost any substrate.

Our Services

Get a Free Quote


Airtight coatings prevent air loss through walls, ceilings, floors and connections by creating a permanent and continuous seal

Blowerproof is a spray-applied liquid membrane that provides an air and vapour-tight seal over a wide variety of common building surfaces.

BlowerProof creates a seamless, continuous air and vapour-tight seal over cracks and gaps. Because the seal perfectly follows the contours of the substrate and in combination with the high flexibility and superior adhesion, the connections remain airtight over the long term.

Find out more:

High-Performance Solution

Reduce Carbon Footprint


Wall and ceiling connections are easily and quickly sealed with BlowerProof Liquid Brush or Spray even on different types of material such as brick, concrete or steel. Different materials react differently to changes in humidity and temperature, which can lead to small cracks in plaster or other finishes leading to air leaks. Applied in two coats second coat must only be applied when the first coat has turned completely black.

Window jambs are so simple and quick to seal: first fill larger gaps between the window frame and the wall with PU foam, then apply protection tape on the profiles at about 5mm from the side, next simply brush on BlowerProof Liquid Brush directly onto the wall and window surfaces (and over the hardened gap filling foam) remove the tape immediately after application, any spills can be easily cleaned with water.

Walls can be a problem to make fully and reliably airtight; not so with Blowerproof Liquid Spray. Spray application ensures complete and secure coverage in double quick time. Blowerproof Liquid can be directly applied over a wide range of substrates including brick, masonry, concrete, timber, plaster, render and even mineral wool insulation. Treated surfaces can be over-painted, plastered or rendered directly onto the Blowerproof Liquid, which is also available in white for use under a finish plaster.

Pipe penetration gaps are one of the main contributors to failing airtightness tests. Sealing is so simple with Blowerproof Liquid: first fill any gaps around the pipes with rapid setting cement or polyurethane foam and apply 2 layers of Blowerproof Liquid Brush with a flat paintbrush. Seals easily and quickly around any shape, especially useful for retrofit and difficult to access applications.

Floor / Wall connections are a vital area to seal in order to meet high levels of airtightness, once a floor covering is in place it’s very difficult to rectify leaking connections. Apply Blowerproof Liquid to a dust free, solid surface, and fill cracks or gaps beforehand: large holes and joints > 5mm can be repaired with a fast setting cement based product or PU foam, small holes and joints 2-5mm can be sealed with Blowerproof Liquid Brush.

Ultimate Coatings is the only approved applicator of Blowerproof in the UK.

If you have a project that would benefit from the use of BlowerProof, please call 01793 772 882 or email [email protected] for more details or a quote.

Our latest Air Tightness projects

We’re proud to have installed Blowerproof in record-breaking airtightness projects, including the most airtight building in the country. 

Do you need a custom quote for your project?