cavity wall insulation

rwster

Could any body tell me what is the best way of getting the best and cheapest way of getting my cavity wall insulated , both of us are working , will we still be able to get a grant or subsidised in any way. Thanks ps thinking of getting it before winter

hollie.weimeraner

I've just had my 4 bed detached house done by this company http://www.millfold.co.uk/cavity_wall.php The cost was £200 after the grant which Millfold sorted out. All I had to do was pay the £200 on completion.You don't say where you live. If Millfold don't cover your area just do a google search for "cavity wall insulation" and also add your town/city and it should bring some back. Then give em a ring and ask for a quote

clark1982

Hi, I'm thinking of getting this done aswell, but I'm concerned over the mess, as I've just decorated. Is it a really messy job?

v0n

There is something that worries me about jumping on the whole cavity wall insulation bandwagon - it might be convenient for the goverment to cut heat emissions at all costs but if I remember correctly cavity walls have a purpose - air circulating between layers keeps walls dry. The idea is pretty simple - kind of like walls of a tent during rain - as long as you don't touch them from the inside water don't leak into the tent.

Logics would suggest that if you stuff the cavity full of styro or expanding foam the whole design goes back to square one - sooner or later external wall will get moist and start working like a sponge stuck to a foil - there will be nothing to help it dry inside, and if anything, the waterproof characteristics of the insulation will make drying more difficult.

What happened that we suddenly no longer need cavity walls?

titewad_2

clark1982 wrote:

Hi, I'm thinking of getting this done aswell, but I'm concerned over the mess, as I've just decorated. Is it a really messy job?

It's done from the outside of the property.Holes drilled at varying heights and then the stuff pumped in in layers.

Woby_Tide

the energy savings trust details what grants are available in each area, give them a call or mail and they normally get someone in touch with you www.est.org.uk

hollie.weimeraner

v0n wrote:

There is something that worries me about jumping on the whole cavity wall insulation bandwagon - it might be convenient for the goverment to cut heat emissions at all costs but if I remember correctly cavity walls have a purpose - air circulating between layers keeps walls dry. The idea is pretty simple - kind of like walls of a tent during rain - as long as you don't touch them from the inside water don't leak into the tent.

Logics would suggest that if you stuff the cavity full of styro or expanding foam the whole design goes back to square one - sooner or later external wall will get moist and start working like a sponge stuck to a foil - there will be nothing to help it dry inside, and if anything, the waterproof characteristics of the insulation will make drying more difficult.

What happened that we suddenly no longer need cavity walls?

It isn't the air circulating in the cavity that keeps the walls dry, that job is done by the damp proof membranes fitted approx 2 to 3 bricks from ground level. The cavity was the first way of reducing moisture caused by condensation (Cold single thickness walls with warm air inside). The cavity was a "buffer" between the cold outside temperature and the warmer household temperature. Cavity insulation helps to further minimise the inner wall temperature differential (keeping the house warmer) but also reducing condensation that causes damp and mold whilst also retaining heat.