- Joined
- 22 Apr 2018
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Hi all.
Undergoing some renovation, i.e. a wall has been knocked off and creating one unique space from two rooms.
The room at the back used to have a cold pitched roof, will now have a flat warm roof and the RSJ will be exposed, we want it as a feature.
The steel is sitting halfway on the external padstone, I am confident this will cause thermal bridging. When challenged the builders on two occasions, I have been dismissed with things like "it is how it is always done", "there is no other way".
I suppose some TB will be happening, but is it indeed an acceptable thermal bridging or is it going to be very compromising?
If it is very compromising, how to minimise thermal bridging as much as possible, seeing the steel is actually already in situ and we really wouldn't want to start from scratch? Our house has been exposed for 10 days already (instead of the 2 days originally planned) and it is really impacting our lives.
I was thinking to pad the face and top of steel with some XPS, but then it would still be sitting on cold concrete padstone and slates, so in my mind having some XPS is just going to slow down the rate of heat exchange, but the final heat exchange is going to be exactly the same?
Is there such a material that has compression strength (like a padstone) but it is also insulating?
Or solution B, cutting that steel corner and have a padstone sitting on the internal skin, at a 90 degree angle with the current internal padstone.
Unfortunately the internal wall of the extension has just been rebuild with breeze block sitting on top of each other (not interlocked). When I challenged the builders they said you cannot have a padstone on top of breeze blocks (which is incorect according to what I read online) but indeed I think having a padstone on top of a pillar of straight freeze blocks is now what someone would want?
Anticipating your questions ("why have they done this?"), essentially when it came to replace the window (located where the hop-up bench is) the wall appeared to be really crap with lot of broken, misplaced bricks and further opening up of the wall made it clear was not going to be able to have a load bearing RSJ sitting on it. Unfortunately also the extension appeared to be very badly tied to the main building (which we imagined already), so they essentially have had to cut two blocks width on the outside of the extension wall and one block width on the inner leaf (as you can see above) to have staggered bricks interlocked between the main building and the extension to effectively tie them (that's how it is on the outer leaf). It escapes my mind why they haven't cut two blocks width on the inner leaf too and interlocked blocks between main building and extension in the inner corner as well. Surely if that would have been done, you could have safely had just one padstone there holding the steel?
Thank you all really
Undergoing some renovation, i.e. a wall has been knocked off and creating one unique space from two rooms.
The room at the back used to have a cold pitched roof, will now have a flat warm roof and the RSJ will be exposed, we want it as a feature.
The steel is sitting halfway on the external padstone, I am confident this will cause thermal bridging. When challenged the builders on two occasions, I have been dismissed with things like "it is how it is always done", "there is no other way".
I suppose some TB will be happening, but is it indeed an acceptable thermal bridging or is it going to be very compromising?
If it is very compromising, how to minimise thermal bridging as much as possible, seeing the steel is actually already in situ and we really wouldn't want to start from scratch? Our house has been exposed for 10 days already (instead of the 2 days originally planned) and it is really impacting our lives.
I was thinking to pad the face and top of steel with some XPS, but then it would still be sitting on cold concrete padstone and slates, so in my mind having some XPS is just going to slow down the rate of heat exchange, but the final heat exchange is going to be exactly the same?
Is there such a material that has compression strength (like a padstone) but it is also insulating?
Or solution B, cutting that steel corner and have a padstone sitting on the internal skin, at a 90 degree angle with the current internal padstone.
Unfortunately the internal wall of the extension has just been rebuild with breeze block sitting on top of each other (not interlocked). When I challenged the builders they said you cannot have a padstone on top of breeze blocks (which is incorect according to what I read online) but indeed I think having a padstone on top of a pillar of straight freeze blocks is now what someone would want?
Anticipating your questions ("why have they done this?"), essentially when it came to replace the window (located where the hop-up bench is) the wall appeared to be really crap with lot of broken, misplaced bricks and further opening up of the wall made it clear was not going to be able to have a load bearing RSJ sitting on it. Unfortunately also the extension appeared to be very badly tied to the main building (which we imagined already), so they essentially have had to cut two blocks width on the outside of the extension wall and one block width on the inner leaf (as you can see above) to have staggered bricks interlocked between the main building and the extension to effectively tie them (that's how it is on the outer leaf). It escapes my mind why they haven't cut two blocks width on the inner leaf too and interlocked blocks between main building and extension in the inner corner as well. Surely if that would have been done, you could have safely had just one padstone there holding the steel?
Thank you all really