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

Firefly Energi has previously helped households to keep their homes warmer by installing External Wall Insulation under the HEEPS:ABS. There is Funding available again for the 2017/18 HEEPS:ABS Funding.

However, you need to be aware that a client contribution may be required Register your details for more information.


  • 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

Needs a building Warrant

  • You will need to apply for a building warrant we can help with this