Did you know that solid walls can be insulated? solid wall insulation explained

Solid wall insulation

If your property has solid walls, rather than cavity walls, you can work to insulate them from the inside or the outside. 

Common in homes built before 1920, properties with solid walls let through twice as much heat as their cavity wall counterparts. While they're more expensive to insulate, savings are greater in the long term; it's estimated that homeowners could save up to £490 on their heating bills each year. 

Internal wall insulation involves fitting rigid insulation boards to the wall, or by building a stud wall filled with mineral wool fibre. Stud wall insulation is thicker than rigid insulation boards, reducing the size of your room.

A stud wall is strong enough to hold heavy fittings such as kitchen units, radiators and washbasins, while insulation boards (typically between 60-100mm thick) need fixings that go through them and into the original wall behind. 

Externally you can attach a layer of insulation material to the outer wall, and either clad or plaster over it, depending on your preference. 

Generally cheaper to install, internal wall insulation is more disruptive, in terms of building works throughout your home and the need to remove internal fittings, skirting boards and doorframes in each room.

On the other hand, external wall insulation may need planning permission in some circumstances, however on the plus side it can help reduce noise pollution, can further weather-proof your home.

Information and other materials on this website are not intended to constitute professional advice and should not be relied upon. Please see our Terms of Use for further details.

Related articles

Double glazing saves energy

The importance of double glazing windows for energy efficiency

With as much as 18% of heat lost through windows, double-glazing can greatly improve the heat retention of your home while keeping out unwanted...
How to manage gas leaks

Who to call when you smell gas

If you smell gas or have reason to believe there’s been a gas leak you should take immediate action.   Call the National Gas Emergency Service...
What is a combi boiler explained

Combi boilers

Combi boilers (combination boilers), are the most popular type of boiler in the UK. Providing heat and hot water on demand, without the need for a...