Insulation forold Cavity Block extension with a new Kitchen!

rosehip

Hi Everyone, hope i'm in the right section.

If a house had a 40? year old extension (solid no sign of mould i think), but cavity block, at the back of a terraced house, is it best to get it insulated externally, or drylined, would anyone know - it's about 20X20.
The owner has a new kitchen in and so i think that precludes drylining? There is no interest in pulling out the kitchen. Is it a waste to dryline and not do behind the kitchen. Kitchen on south facing wall.

And if the external insulation was affordable, how much space does it take up? A foot? As outside space is tiny - small side passage to little patio area. Also think that left side of extension is built onto right side of neighbour's extension so is insulation acheivable at all?

Any help would be much appreciated,

Regards,
Rose

rosehip

Anybody??? I've read all the threads on these topics but just looking for some advice personal to my situation.

Trying to work out prices, i'm getting quotes maddeningly varying and conflicting advice! It's not my house - but one i'm looking at to buy. Maybe.

I'm now thinking drylining. Any advice would be very very gratefully received,

I hope i haven't broken any rules or am i in the wrong section? I usually see these in DIY but thought here was more appropriate - but maybe a mod can move it?

Regards,
Rose

daver123

rosehip wrote: »

Anybody??? I've read all the threads on these topics but just looking for some advice personal to my situation.

Trying to work out prices, i'm getting quotes maddeningly varying and conflicting advice! It's not my house - but one i'm looking at to buy. Maybe.

I'm now thinking drylining. Any advice would be very very gratefully received,

I hope i haven't broken any rules or am i in the wrong section? I usually see these in DIY but thought here was more appropriate - but maybe a mod can move it?

Regards,
Rose

Probably your best solution would be to get the walls pumped with a ecobead or a similar product. You would need to get a site survey first to see if the cavity is suitable.

http://www.kingspanecobead.com/

Poor Uncle Tom

If it's a cavity block build you won't be able to pump it. If you could fit the external insulation it would probably be a better option given that you would lose too much space from the inside to dryline the walls correctly.

If the walls are constructed in blockwork with a cavity then pumping as daver123 said is probably best.

rickmoister

As taking out the kitchen is not an option you have no choice but to use external insulation .It would be a waste of time to only dryline some the walls in the kitchen as you still would have heatloss through the unlined wall.The easiest thing to do is get a few detailed wriiten quotes (ie the type and thickess of insulation) for the external insulation and as my dad:cool: says you get what you pay for.

rosehip

Thanks guys,

I spent last night researching everything on the net and between everything i just think i'll leave it.

I'm downsizing and it's very hard find a small house without an extension. The houses i am after were originally 60-700ftsq and nearly all are extended up to 900/1000.

In truth, the original size house is big enough for me - however, finding a house (they all have cavity wall but all the extensions are cavity block - that i've come across anyway) in original state is near impossible.

If the price was good, i think i'd knock extension and move kitchen back into main house and insulate house .... but not on this house.

Thanks very much for replying,

Kind Regards,
Rose