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Home / Solid Walls (IWI)

Solid Wall (IWI) Insulation

Also known as IWI, Low-E Insulation is an ideal insulating the internal side of older solid wall properties. It increases performance in less space and provides a vapour control layer over the entire wall stopping any issues with damp.

Increases Thermal Performance

Stops Draughts

No Fibres, No Itching

Occupies Less Space

Won't Absorb Moisture

Insulating a solid wall can have huge benefits but one drawback is than you can lose a considerable amount of internal floor space. Low-E Insulation is a very compact, cost-effective solution for solid walls. It is quick, clean and easy to install.  

“We had a serious problem with damp and mould. Not only did Low-E eliminate the problem but the room is easily to heat too. It was far more noticeable than the cavity wall insulation that caused the problem with the mould”

G Taylor, Bolton, UK

“The Low-E was quick clean and easy to install. It occupied about 1” of space, so the room feels the same size as it was. It used to be too cold to sit in, now it’s easy to heat. I’m over the moon.”

Wendy R, Stockport, UK

“We are managing to meet U-value requirements in smaller studs. Customers love that we can save some floor space and our fitters love that is quick and clean to install.”

Gerry D, Sunset Building, Luton, UK

“We use both the vapour and the breathable versions of Low-E Insulation. We’ve tried using other foil insulation products, but they can be time-consuming and difficult to install. Low-E is so easy to work with, we just wouldn’t use anything else.”

G Stone, Stroud, UK

Solid Wall – Space Saving

Solid walls can be constructed of stone, brick or block. They can be difficult to upgrade and often a compromise is made between occupied floor space and efficiency achieved. Installing Low-E® EZY Seal with a plasterboard or insulated plasterboard can be the most efficient way of insulating a solid wall.

This example uses a single batten and occupies a minimum amount of space.

Solid Wall – Double Batten

In this example the wall is battened, the Low-E installed and then a counter batten. Doubling battening occupies additional space but also increases the thermal performance.

Solid Wall – Timber Frame

In this example, timber battens are fixed to the wall with rigid or fibre insulation installed between them. Low-E® EZY Seal is fixed to battens and then a counter battened installed to create a service void. The counter batten occupies additional space but also increases the thermal performance. You can remove this batten to save space if necessary.

Solid Wall – Hollow Block

In this example, timber battens are fixed to the hollow block wall with rigid or fibre insulation installed between them. Low-E® EZY Seal is fixed to battens and then a counter battened installed to create a service void. This reduces draughts and provides maximum performance in the least space possible.

Browse Some Applications

Low-E Reflective Insulation can be used in virtually any application where environmental control is required.