Cullen Spray Foam
Open Cell Spray Foam Insulation

Open Cell Spray Foam Insulation

Breathable yet airtight preventing harmfull damp and mould

Open cell spray foam insulation contain tiny air pockets that are not completely closed which traps air and inhibits the transfer of heat. It creates an excellent breathable air barrier but doesn't provide any type of water vapor barrier as water vapour pass through the foam to the air space beyond where an air gap removes the water vapour.

Open cell spray foam therefore is a breathable airtight insulation as only water vapour and not the warm air escapes . Open cell is also used within interior walls and floors because of its sound reduction qualities. Open cell is less expensive than closed cell but is not recommended for outdoor applications.

Breathable Vent Card

Breathable Vent Card Cross Section

Part L of the Irish Building Standards on the Conservation of Fuel and Energy in Dwellings stipulate that a 50mm air gap must be maintained between your insulation material and the roofing felt. Applying a breathable vent card removes this problem. The vent card is only needed when open cell spray foam is used, as closed cell foam is not "Breathable" and is under no circumstances to be used in home insulation.

We use CPI E- Zero 500 open cell spray foam insulation combined with the unique CPI breathable vent card system. E-Zero 500 is NSAI Agrément certified and is CE marked.

Open Cell Spray Foam Insulation Images

Here are some of the images of our work using open cell spray foam insulation on attic with vent cards, floors and walls.

FAQ's

The answer to how much does it cost to have spray foam insulation installed? is, it depends, on the area, depth, access and the type of foam open or closed cell.

The spray foam insulation we use for residential applications attic, floors and walls comes with a 25 year manufactures guarantee.

No, once sprayed the dangerous bit if over and spray foam insulation is inert.

A breathable vent card is required under Irish Building Regulations Part L to ensure escaping water vapour is able to escape your structure preventing damp and mould.

The cost per square foot or meter of spray foam insulation depends on many factors, size, type and access.


Customer Reviews


Tommy Roche (4 Jan 2022)

Great job, they’re on time. Highly recommended.

Rating: ⭐⭐⭐⭐⭐


Sean Neville (13 Mar 2020)

Some boy, some worker. Big job finished in one day. Fair play.

Rating: ⭐⭐⭐⭐⭐

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