Recent content by boulderman

I think the foundation is thick enough, there is also a foot of scree down ontop as well. Cheers :)

Only single layer of brick and plasterboard. Been up number of years and now the single level extension with a flat roof is cracking (through/around) the bricks. Should I use a concrete lintel with metal in it, more than 1, or a metal lintel or a RSJ cut down? Should I opt for...

Which is the better method for quality and longevity? Thanks :) Will I only need one proper layer for the torch option?

Yes it would be fine I doesn't require the waterproofing properties for it. How much is it typically, what names should I look for? Thanks

What Polystyrene brands are there? Thanks I forgot what the handyman said.

Something to do with windows I think.

Ah, I see :shock: So what thickness would you suggest :P

Ok cool, the surveyor suggested more brick for building regs as the previous owner put on this extension with single brick which the surveyor said was of outhouse style construction, then the current owner, the one who I´ve bought from has knocked through/out the original exterior wall...

Hi Freddy, I don´t know the brick/block specs yet. I may be able to find out next month (when I move in :lol:, . Once I have them I can go from there. There was an extension prior to the current owner and it needs a second skin plus insulation. So at least I would know what bricks I´d be...

ok, I would think then, as costs overall are similar, The PIR sound a better bet as they mean the cavity can be thinner and I think its sounds easier to work with. Didn´t realise the blocks/brick spec would be so important :? , I´m guessing its a width thing, the thinner the layer, the...

PIR e.g. Celotex or Kingspan. Is Rockwall preferred over PIR panels like Celotex? Based on the thickness required and it seems 65mm of rockwool isn´t thick enough to insulate sufficiently, what mm of Celotex / Kingspan / Xtratherm is required? I´ve heard 40mm is thick enough (according to...

Is Rockwall preferred over PIR panels like Celotex? Based on the thickness required and it seems 65mm of rockwool isn´t thick enough to insulate sufficiently, what mm of Celotex / Kingspan / Xtratherm is required?

Hi Noseall, How do you know what thickness to use? (Soz for the questions all in one hit) The walls that need insulating have tiling and I wish (at the surveyors suggestion) to line with PIR boards underneath them. Should they go flat against the wall? I would have thought that would...