Good evening, I've got a detached workshop which I seem to be spending more and more time in, so I want to make it more comfortable for me (some warmth please) and make it a more suitable place for all my tools which I'm constantly adding to, next on the list is a small lathe, so I've got to get the place insulated, if only to stop the dreaded 'inside rain' that flows from the steel roofing and down the joists (this is the cause of their early demise) and onto everything!!!
Workshop dimensions are 5.5m wide by 6.5m long with a single sloping roof of box profile galvanized steel on timber joist. the walls are 100mm thick gp1 blocks rendered on the outside and un plastered but painted on the inside.
My plan for the roof is to remove the timber joists (end of life) and replace them with steel Z purlins.
http://www.steelroofsheets.co.uk/products.php?cat=14
On top of the Z purlins I plan to lay 80mm Celotex or Kingspan (the type with foil either side), tape the joints on both faces with aluminum tape then relay the box profile steel on top and give them a coat of paint while I'm there.Between the Z purlins and tight on the underside of the insulation I plan to fix plasterboards.
I'm fairly confident that this will work for the roof, I'm not so convinced on my ideas for the walls at present. I do not want to loose any floor space and want to minimize the flammable materials inside so I plan to insulate the outside.
Currently my plan for the walls is to lay 50mm Z purlins (mini Z's) horizontally and fix 50mm insulated steel composite panels to the mini Z's.
http://www.steelroofing.co.uk/composite-insulated-roofing-and-wall-cladding.html
Here are a few of the thing I like to get some feedback on.
1. The walls will have a 50mm air gap between them and the composite sheets, do I leave it like that, or do I need to line the wall with some sort of membrane before fixing the z's to it, or do I fill the cavity with 50mm Celotex or Kingspan foil backed insulation, or do I need to take a totally different approach.
2. Which paint would you recommend for the galvanized sheets - they have been in place about 15 years and the galvanizing has really stood up to the test of time - no rust - so I plan to extend their life as much as possible.
Your input would be most welcome.
Workshop dimensions are 5.5m wide by 6.5m long with a single sloping roof of box profile galvanized steel on timber joist. the walls are 100mm thick gp1 blocks rendered on the outside and un plastered but painted on the inside.
My plan for the roof is to remove the timber joists (end of life) and replace them with steel Z purlins.
http://www.steelroofsheets.co.uk/products.php?cat=14
On top of the Z purlins I plan to lay 80mm Celotex or Kingspan (the type with foil either side), tape the joints on both faces with aluminum tape then relay the box profile steel on top and give them a coat of paint while I'm there.Between the Z purlins and tight on the underside of the insulation I plan to fix plasterboards.
I'm fairly confident that this will work for the roof, I'm not so convinced on my ideas for the walls at present. I do not want to loose any floor space and want to minimize the flammable materials inside so I plan to insulate the outside.
Currently my plan for the walls is to lay 50mm Z purlins (mini Z's) horizontally and fix 50mm insulated steel composite panels to the mini Z's.
http://www.steelroofing.co.uk/composite-insulated-roofing-and-wall-cladding.html
Here are a few of the thing I like to get some feedback on.
1. The walls will have a 50mm air gap between them and the composite sheets, do I leave it like that, or do I need to line the wall with some sort of membrane before fixing the z's to it, or do I fill the cavity with 50mm Celotex or Kingspan foil backed insulation, or do I need to take a totally different approach.
2. Which paint would you recommend for the galvanized sheets - they have been in place about 15 years and the galvanizing has really stood up to the test of time - no rust - so I plan to extend their life as much as possible.
Your input would be most welcome.