Sun, 31 May 2026 00:11:13 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207157#Comment_207157 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207157#Comment_207157 Fri, 15 Aug 2014 07:29:48 +0100 HammerandChisel
I am embarking on a single storey extension project on our home.
I am really struggling to find any flat roof details
utilising sips.
Also beam and block details with good thermal breaks seem hard to find.
Can anyone help?

Thanks

Matt]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207194#Comment_207194 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207194#Comment_207194 Fri, 15 Aug 2014 21:28:40 +0100 Timber
Beam and block details are fairly easy if using a service void on the inside of the wall with a masonry upstand.

Can you be a little more specific in your questions?]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207201#Comment_207201 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207201#Comment_207201 Sat, 16 Aug 2014 09:13:25 +0100 HammerandChisel
I am thinking out loud here so bear with me!

I had been looking for construction details of flat roofs online and come up with virtually nothing!
My architect has no experience of sips but was keen to use them but also seems to be drawing blanks (I dont want him to change his mind).

The short span is just shy of 4 metres with a roof lantern which is another area i could find no details of (trimming out etc). Also, how a large opening for a very wide patio door would be achieved?

I had thought firring pieces may be the way to go.

I am not sure what roof covering could be used. I'd like to use a butyl sheeting product.


Examples of beam and block I have seen pretty much all had weak thermal separation at the floor/soul plate juncture. I wonder if a sips floor would make sense?

The sips I have been looking at have splines made of 4 x 2's which I am not overly happy with (because of the thermal bridge).

Any thoughts would be appreciated.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207212#Comment_207212 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=12451&Focus=207212#Comment_207212 Sat, 16 Aug 2014 11:27:46 +0100 tony