Hi there my first post so treat me gently!
We've got a bit of a project house part of it has a lovely "fibre cement" roof. We're looking at options of changing this and have a few dilemas. Firstly the building is far from square and secondly isn't even the same width as it goes along. The current roof has been made to fit whats there and has obviously been done by a craftsman. Our first problem is that the pitch is approx 17 degrees, the second is of increased load.
Solution one would be to fit an entirely new roof with a steeper pitch but I'm not convinced it would fit as the building butts up to another.
Solution two is our preferred and involves trying to re-use the roof we have. Currently the cement boards are laying on a layer of 3/4 inch tongued and grooved boards these are supported by 50 x 150 purlins at 1.5m spacings then are supported by a number of trusses at a max of @3m I gather if we went for a Redland Cambrian slate then the pitch would be ok but what would be the best way of making sure the roof can hold the extra weight? could we simply double up the purlins? or would we need more trusses to support them. To give you an idea if this comes out its a pic of what we have at the moment!
We've got a bit of a project house part of it has a lovely "fibre cement" roof. We're looking at options of changing this and have a few dilemas. Firstly the building is far from square and secondly isn't even the same width as it goes along. The current roof has been made to fit whats there and has obviously been done by a craftsman. Our first problem is that the pitch is approx 17 degrees, the second is of increased load.
Solution one would be to fit an entirely new roof with a steeper pitch but I'm not convinced it would fit as the building butts up to another.
Solution two is our preferred and involves trying to re-use the roof we have. Currently the cement boards are laying on a layer of 3/4 inch tongued and grooved boards these are supported by 50 x 150 purlins at 1.5m spacings then are supported by a number of trusses at a max of @3m I gather if we went for a Redland Cambrian slate then the pitch would be ok but what would be the best way of making sure the roof can hold the extra weight? could we simply double up the purlins? or would we need more trusses to support them. To give you an idea if this comes out its a pic of what we have at the moment!