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Solid Wall Insulation

If your home was built before 1920, its external walls are probably solid rather than cavity walls. Without a gap they will let more heat escape. Solid walls can be insulated – either from the inside or the outside. This will cost more than insulating a standard cavity wall, but your home will feel warmer and you could save up to £270 per year so apply today.

External Wall Insulation 

CHiL has previously helped hundreds of households to keep their homes warmer by funding External Wall Insulation and Internal Wall Insulation. CHiL currently has funding available through the Green Homes Grant (Home Upgrade Grant). To qualify your property must not have gas central heating. If you are interested please apply online today.



Can be applied without disruption to the household

Space Saving

Doesn’t reduce the floor area of your home

Maintains Style

Renews the appearance of outer walls

Weather & Sound Proof

Improves weather proofing and sound resistance

Draught Reduction

Fills cracks and gaps in the brickwork, which will help reduce draughts

Longer Life

Helps increase the life of your walls by protecting the brickwork

Reduce Condensation

Can help reduce condensation on internal walls and can help prevent damp (but won’t solve rising or penetration damp)

Time Saving

Is best installed at the same time as external refurbishment work eg. new windows and doors, to reduce the cost

May need Planning Permission

May need planning permission – check with your local council

Internal Wall Insulation

CHiL currently has Green Homes Funding (Home Upgrade Grant)  to install Internal Wall Insulation. If this is something you are interested in then please apply online today The grant is aimed at properties with an EPC rating of D, E, F and G and which no not have gas central heating.


Internal wall insulation is generally cheaper to install than external wall insulation

Floor Space

Internal wall insulation can slightly reduce the floor area of a room. The thickness of the insulation is around 100mm

Requirements for fitting

Can be disruptive to daily life as work is needed inside, however, this can be done room by room and will require skirting boards, door frames and external fittings to be removed and reattached

Consider wall fittings

Installing internal wall insulation can make it hard to fix heavy items to inside walls – although special fixings are available

Checks beforehand

Note that any existing problems with penetrating or rising damp need to be fixed first
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