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Why choose green energy?

On average, a home loses 20 – 30% of its heat through the walls. This percentage can rise even further if they are not insulated. Up to 30% can be lost through a poorly insulated attic. Grants provided by the Sustainable Energy Authority Ireland (SEAI) are now available to help you replace your insulation. Making these changes to your insultation can help save money on heating bills.

We are a registered building contractor in Donegal with the SEAI. We can help you select and apply for your grant. Find out how to apply here.

What types of insulation are available?


Attic Insulation

Ceiling level roof insulation is generally the most cost effective of any energy efficiency upgrade made to a house. If you have attic insulation, you should consider upgrading it to today’s standard of 300mm of rockwool or equivalent.


Cavity Wall Insulation

A cavity wall consists of two rows of brick or concrete block with a cavity or space between them. Injection of insulating product from the outside is the best method for insulating this type of wall. This is a very cost effective method of wall insulation. If your home is built using solid wall or hollow block construction methods, cavity fill insulation is not possible. You have two options: either internal wall insulation or external wall insulation. 


Internal Wall Insulation

Internal insulation is also known as dry lining. This usually involves fixing a composite insulation board containing insulation, a vapour barrier and plasterboard to the wall. The board is applied to the inside of the external walls.


External Wall Insulation

External insulation involves fixing insulating materials like mineral wool or expanded polystyrene slabs to the outer surface wall. The insulation is then covered with a special render to provide weather resistance. A steel or fiberglass mesh is embedded to provide strength and impact resistance.