Spray foam insulation is one of the most effective ways to insulate your attic or loft. The foam used to insulation attics is called open cell spray foam, it expands to over 200 times its size and is able to get into gap or crack in the buildings structure.
Breathable Vent Cards
In order to allow water vapour to escape your home a air gap needs to exists between the roofing felt and the insulation material. If your roof has been counter battened then you're fine, if not then you will need to create this gap by attaching a breathable vent card between the rafters 50mm from the roofing felt and the insulation material. Thais allows the air to leave the building preventing the buildup of condensation that leads to harmful damp and mould.
Spray Foam Insulation Costs
The cost of insulation your attic with depend on a few factors. The size of the space to insulation, the depth of the insulation needed, the brand of foam used and the labour costs etc.
Spray foam insulation is one of the most cost effective forms of insulation so your attic insulation cost must be offset against the money saved from reducing your heating bills.
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