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Solid wall insulation is designed to be applied directly to solid walls. Solid walls are generally constructed from brick or stone and have no cavity section within the wall. This means the wall is solid from the inner leaf to the outer leaf (internal brick through to external brick).

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Solid wall insulation is frequently made up of high-performance, rigid polyisocyanurate (PIR) featuring foil facings on both sides, Insulated Plasterboards, or mineral wool slabs. The type of insulation used for the walls can differ depending on the installation method.

How is solid wall insulation installed?

Always call a specialist before installing solid wall insulation to prevent problems occurring in the future and damages being made to the property.

The boards should be prepped by removing any wallpaper, skirting boards, covings, wall decoration etc. The insulation can be applied to bare brick walls or plastered walls.

Insulation can be adhered to the wall using the dot and dab method or by fixing the boards onto mechanically fixed timber battens.

This can be either Insulated plasterboards or insulation boards followed by a layer of plasterboard.

Once the insulation is all fixed to the walls and the correct finishing has been applied such as joint tape, corner beads, etc, the wall is then ready for finishing applications such as plaster and paint.

Why do I need solid wall insulation?

Solid wall insulation is a great option for walls that do not have a cavity. Good quality insulation can help to improve the thermal conductivity within the work or home space.

It is estimated that around 45% of your property's heat is lost through solid walls. Solid wall insulation can keep the heat in your home meaning you can save money on your energy bill. As less heat is escaping the property, the insulation can help to create a more energy-efficient and sustainable environment.

Enjoy cooler summers and warmer winters, when insulation is installed correctly it will create a more temperature-controlled and comfortable environment.

An insulated plasterboard is recommended when insulating a solid wall as this 2-in-1 product will save you time and money.

Solid wall products are extremely durable and should last for as long as the building when installed correctly.

Solid wall insulation is manufactured by several brands such as Celotex, Kingspan, Isover, Siniat, and others.

Any existing problems within your walls such as damp or rot should be fixed before any insulation materials are applied.


Insulated Plasterboard –

Insulated plasterboard is a high-quality board of rigid polyisocyanurate (PIR) with foil facings bonded to each side that is fixed onto a sheet of 12.5mm plasterboard. This achieves a 2in1 product that will save time on installation. It is easy to handle and gives a thermal conductivity of 0.022W/mK.

PIR Insulation Board –

Insulation boards are high-quality boards made from rigid polyisocyanurate (PIR) that has a layer of low emissivity foil bonded to each side. It is lightweight and easy to cut, handle, and install. It gives a thermal conductivity of 0.022W/mK. This should be paired with plasterboards