House Extension In A Very Severe Exposed Location
Posted 24 January 2016 - 10:09 PM
Architects aren't structural engineers, in the main they are artists, and they will hand off their design to an engineer to detail usually. If double cavity walls are good, why do we never see them?
Posted 25 January 2016 - 06:33 AM
Re:wall ties: what size brickwork gauge is the original house,given that you'll have to use reclaims? I'm guessing they'll be imperials ,which gives you a problem as the blockwork will be metric (225mm per course inc bed joint). There's no real play in that when using EPS. Only solution to this is to use abbey channel & ties,either long lengths drilled into the blockwork through the insulation or small sections bedded into the blockwork during construction,as normal.
Posted 25 January 2016 - 08:23 AM
Like most, I would look at how you do a decent watertight build and if its strength you are after then don't bother with the first cavity and just use a heavy block outer skin with the bricks as a facing layer tight onto the block. Cavity build up as normal and then an inner skin would give you a 200-50-80-100 build up from out to in if you use Kooltherm in the cavity.
Inner and outer blocks would run to standard heights, the brickwork could be tied as and when to the block but with a similar construction to an English bond garden wall without the cross bricks
Posted 25 January 2016 - 10:15 AM
Posted 25 January 2016 - 08:53 PM
I do like the sound of an outer face of blockwork and then the bricks flush up against it, a cavity and then a block inner wall with insulation fixed to it.
I may phone the archtiect to discuss this method.
Posted 25 January 2016 - 09:03 PM
Posted 25 January 2016 - 09:09 PM
Posted 30 January 2016 - 09:51 PM
We have to use reclaimed bricks for the outer skin as we are in an area of outstanding natural beauty.
My first must have is to stop water getting in and having a stormproof wall that blends in with the rest of the build. We like traditional buildings with wooden sash windows, reclaimed stone lintels and window sills etc, hate modern cement based render.