solid stone external walls

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RMK

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Hi guys.

A customer wants a solid stone external wall dot&dabbed along with the rest of a room. I have always limelighted external walls or thrown up a false cavity if required, however extreme time pressures mean that limelighting/solid plastering is not possible.

Just wondering if it might be an idea to foam the boards on instead of using adhesive to kill any potential drawing of damp from outside/may be using foil backed boards??? i don't know... very limited experience (please don't mock-ha).

Any tips / advice would be gratefully received.

Many Thanks
 
guess that's an option, but means messing round with a whole lot of spaces to get the timbers plumb/square.

any other options... please....?
 
if you cant build a stud its going to need some sort of pretreatment .............cant think of a quick way mate ....you might aswell limelight the c**t
 
Aren't the insulation boards foiled? Dot and dab insulation boards on, the dab will give a cavity to allow air to circulate behind the board to prevent condensation. I did a job while back on a cottage and this was specified by the architect.
 
this is where its nice to go by a spec theres loads of ways to do it and when you chose one it goes wrong ;D
 
throw up a stud wall in front stick a membrane on back i do alot with old stone walls this is the easy way dot dab on to old stone can be risky especialy if painted take the safe option
 
explain the potential for the 'external' wall becoming an internal wall and get them to install cavity trays above roofline... only way to guarantee it..
this is what the council specify if you remove a flat roof and reinstall a warm roof which is a single storey extension to a 2 storey building..
 
were thinking too modern lads ........its a traditional build ..........keep it traditional .............................wheres that song murph ?
 
Some good suggestions here guys. Thanks! Think the best option for the situation is going to be ziggys-architects spec too. Can't be wrong... surely? Haven't used insulation boards before? Are they the same as thermaline? Are they foil backed? Can anyone foresee any problems i might encounter? Thanks again...
 
if you stick adhesive on a damp wall itll suck better than your breadknife and as we say ooop north de fooookin boards are now de fookin floor
 
I would go with the waterproof sand and cement scratch then dab, and i wouldnt use foil back as adhesive dont stick to it we had a a whole house of reveals stuck on with foil back and the whole lot just came away the next day.
 
Check out British Gypsums White Book, it recommends for refurbs on solid external walls to use thermaline super boards dabbed on then you use a couple of hammer fixings once adhesive has gone off, you could put up a gypliner to fix to if you prefer.
 
there is another school of though that recommends 45mm cellotex with taped joins held on with 25x50mm batten over fixed through the cellotex into the substrate with plasterboard fixed to the battens...
gives you a .35wm2k u value, a vapour barrier and is used on garage conversions for solid external walls..
but thats assuming the other side of the wall isnt also an internal wall..
 
Ide go with Ziggy but dont try and dot and dab foil back it dont work gypliner would be better but the trouble with dry lining old houses is that every thing else has to be secure cos if not them litlle mices get in you have a problem worse if its rats.
Lucius.
 
I'd go with Bodplasters recommendation which is cheap and effective modified sand/cement scratch coat then dot thermaline board to this with a couple of hammer fixings per board , make sure you packed up off the floor at least 25mm
 
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