Cavity wall insulation - is this a good deal ?

[jonmac73]

Hi all, had recent quote through an energy company of £149 for a 3-bed semi. Any good ?
Bloke said something about the wall constructions being different - have standard brick external on side and rear extension and front/back upper floor has tile facing - he said it couldn't be done there which didn't sound right to me.
Thanks in advance

[grumpyscot]

He's right. You can only have cavity wall where on each side of the cavity is brick or breeze block. E.G. You can't have it on a timber framed house, or one where one layer of the wall is breeze block and the other tile. Tiles are usually attached to wood backing and you should never insulate wood - you seal in any dampness and cause the wood not to breathe, so rotting it.

[ofcorsa]

We had ours done via one of these companies last year. The house certainly felt warmer this winter. We paid £149 our is a 3 bed semi with a single story extension with a pitched roof.

No idea why yours wouldnt qualify, Might be worth looking at the criteria.

[jonmac73]

thanks for replies. think I confused a little.......

have quote for 149 - wondered if it was good deal - sounds OK ......... any more views ?

surveyor said only outside and lower walls could be done as upper floors are tiled. previous answer has clarified this sounds OK and they do know what they are talking about.

[Podie]

£149 is what the local council were offering us. Amusingly, on the day they appeared, they only charged us £99.

Has made a difference. Dropped the thermostat 2-3oC in winter, and the house is cooler in summer.

[Topbuzz]

The tile hung sections can only be insulated if they are attached to a block outer wall, so tile, block, cavity (min 50mm) and block internal wall. The insulation work would be from inside the rooms not through the tiles.
As above if they are on a timber frame it's not a good idea and you can't get the ciga guarantee on timber framed houses anyway.
The £149 price is standard at the moment, unless you are over the meterage allowance and need vents.

[wolf1]

Have a look round the british gas web site they are doing it for free in quite a lot of areas.