Caulking Stone Tiles to Wall - Large Gap

[phykell]

Hi,

I have had to remove some stone skirting from my wall which has left an ugly gap between the stone floor tiles and the plasterboard wall.

Bookcases are being fitted to the wall (couldn't be fitted around the skirting) so I won't see the gap but there's a bit of a draught. My first thought was to use caulk but the gap's pretty big - please see the attached image. It doesn't need to be pretty but can anyone suggest the best way of approaching this?

Thanks

 

[23vc]

Expanding foam

 

[catlad]

If you are not going to see it, any kind of mastic.

 

[^woody^]

Expanding foam is not really a draught sealant, but can be used as a packer before sealing with a flexible mastic or caulk. Or foam EPDm/neoprene strips as packing.

 

[noseall]

Expanding foam is not really a draught sealant

Eh?

Probably one of the best going.

 

[robinbanks]

Mm, it depends on how it's applied. It can fail to expand and leave holes. For newbie users I'd recommend to damp the surfaces slightly first, then slightly overfill the gap and trim back the excess rather than try to gauge how much it will expand and risk not applying enough

Dare say with what is posted in the picture though I'd be buying a bag of easyfill and a plasterers trowel

 

[^woody^]

Eh?

Probably one of the best going.

It's a gap filling product, and is not something that would be specified for draught proofing. Something to do with the air voids within it, the inconsistent volume and lack of flexibility.

True it's a bodger's dream, but it does not create miracles.

 

[noseall]

Something to do with the air voids within it

Lol. Air won't get past foam. Do you think its a hollow structure? The holes do help with the thermals though - so good point.

, the inconsistent volume and lack of flexibility

Irrelevant regards stopping air movement - which foam does and does it very well.

.

True it's a bodger's dream, but it does not create miracles.

Indeed it is. However, in terms of gap filling and alleviating air movement in awkward places - it's great gear. Good at fixing stuff too.

 

[noseall]

Mm, it depends on how it's applied. It can fail to expand and leave holes

I would put greater faith in a well gunned in foam application than anything else on the market.