Attic Insulation

086 869 0234

Attic Insulation Ireland

Properly insulating your attic is one of the most important steps you can take to keep your home warm while dramatically driving down your utility bills. As is well known, heat rises, and up to 50% of of it can be lost through an inadequately insulated attic.


Insulating your attic using spray foam is a very simple process and can usually be completed in less than a day with a minimal amount of disturbance and mess. There are two types of foam insulation: Open cell and closed cell. Open cell is a breathable foam and is the one used in attic insulation and roof insulation. The open cell insulation allows moisture laden air within the attic to permeate through it where it will then pass into the outside environment through gaps and through roof tiles. This combats the buildup of "cold wet air" within the roof which would lead to mold growth and timber rot.



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Picture Framing

Here is an example of open cell spray foam insulation being applied in a new build attic using the picture framing technique.

Picture framing is a technique which guarantees the highest levels of air tightness.

The foam is first sprayed to the edges of the frame (space) ensuring that every gap is filled, then the foam is sprayed in the remaining central space.

Breathable Vent Card

First, a breathable card membrane/ Vent card is installed between the rafters. Then a 50mm ventilation gap is left between the vent card and the roofing felt to prevent the buildup of moisture, allowing it to dissipate to the outside. Next, the foam is simply sprayed onto the vent card to the desired thickness. It's as simple as that.

Here spray foam insulation is being applied above the eves in an attic. First a breathable vent is fitted 50 mm from the roofing felt allowing a continuous air flow which removes moisture from the attic and allows your timbers to breath, then the foam is applied giving your attic a continuous airtight seal.

What is unique about spray foam insulation in comparison to traditional insulating materials, such as rock wool, fibre glass or cellulose, is that it expands into ever nook and gap of the roof space, providing an airtight seal which prevents the infiltration of damp cold air and more importantly wind.


Spray Foam In Attic

Here spray foam insulation is being applied above the eves in an attic.

First a breathable vent is fitted 50 mm from the roofing felt allowing a continuous air flow which removes moisture from the attic and allows your timbers to breathe.

Finally the foam is applied giving your attic a continuous airtight seal.