The Shop > Our Shop
Building a shop
ChriX:
Righto here is my roof plan.
As I understand it the danger with the steel roof is that it is prone to condensation. For that reason I have opted for a breathable membrane with an air gap both above and below to try to reduce this risk. As I see it the first anti-condensation method is the vapour barrier to stop the warm air getting anywhere near the insulation - let alone the other side of it. Then there is a large breathable area open to the outside via soffit vents, but I think this should be vented at the ridge too, but not sure how to achieve this. Then I have got a breathable membrane (something like Protect VP400), with battens on top, after which the steel will go on.
I don't know if I need the breathable one, but am paranoid about condensation destroying the insulation, so that's why it's there. Otherwise the steel would sit right on top of the rafters/purlins which is much easier to do!
I'd value anyone's input on the above, I am still not committed to any part of it.
buffalow bill:
Chris, Have you thought about using insulated roof sheets. They will solve the problem of condensation.
There was an article in Model Engineers Workshop N0 116 page 17, where the guy builds a workshop and uses composite cladding. He located a firm in Shropshire that sells affcuts and seconds http:/www.slecladding.co.uk , may be worth looking into!!!
I have a friend that has used these seconds sheets and looking from ground level you cannot tell which are new or seconds.
Its going to be a great place to be, the workshop that is. :nrocks: :nrocks: :nrocks:
Just a thought Bill
mattinker:
Hi,
I have a friend who works for a fridge truck body build. He asked me if I wanted free insulation, as they have to replace entire panels for just a small amount of damage. They have to pay to dispose of it! The most common are trucks that were too tall for a bridge! These panels are 2.5metres high and up to fifteen metres long! A sawsall with a PVC blade works well, there are some Al reinforcing, and some trucks have stainless sheeting on the inside. The side panels are 5 cm thick and the roofs are 8 cm. As these bodies go down to -18°C the insulation level is very high, I think they use special gasses in the foam. The panels are covered with white polyester on both sides, and there's no condensation problem! Now my workshop is insulated with, well nearly finished!
Regards, Matthew
GypsyTinker:
That stone work really makes it!
Great work on the shop! Thanks for sharing.
Stilldrillin:
Hmmm...... Yer've gone a bit quiet, recently....... :scratch:
Any further progress to show us Chris? :poke:
David D
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