jimjolli
Hello,
Hope everybody's well.
I'm planning my conversion now, from a Ducato panel van, and am currently drawing up all the plans.
I'm already stuck at the first step - insulation. I understand there is a need for a vapour barrier as you don't want condensation to collect on the inside of the vans metal panels, degrading them over time. But surely wherever the vapour barrier is within the wall, moisture will trickle down and pool at the bottom? How do you stop this? Also, how much of a gap is considered a vapour barrier?
Here is what I was planning to do...
-Spray glue Silver Bubble insulation to the interior wall of the van.
-Then on top of that and in-between the structural struts of the van, fill with 25mm Celotex/Kingspan.
-I'd then infill the struts with some form of insulation wool - maybe recycled plastic bottle insulation.
-Then I would cover the Kingspan with a roofing membrane (eq Tyvek), but this would sit over the struts therefore hopefully creating a gap (vapour barrier) between this and the Kingspan.
-I plan to board the inside of my van with cedar cladding (11mm thick), rather than carpet walls, so this cladding would be screwed directly into the vans struts or, into battons that are screwed into the side of the struts.
-The only thing I may change is by placing a sheet of 5mm ply between the Tyvek and the cedar to help with the rigidity of the interior walls as there will be cabinets mounted to the walls. If I did this I would probably screw the cedar boards to this ply from the back, making up wall sized panels that could be lifted and screwed in place in one hit, but keeping the the appearance of the cedar boards.
I was planning to avoid using any form of spray insulation or expanding foam as it would be impossible to remove if I ever needed too.
Insulation wise, is this sufficient? What about that vapour barrier? Do the bubbles in the silver bubble insulation act as enough of a vapour barrier? I'm guessing not. So if not, how much of a gap do people think is needed between the Kingspan and Tyvek to act as a vapour barrier?
Any help on vapour barriers would be great.
Thank you.
Hope everybody's well.
I'm planning my conversion now, from a Ducato panel van, and am currently drawing up all the plans.
I'm already stuck at the first step - insulation. I understand there is a need for a vapour barrier as you don't want condensation to collect on the inside of the vans metal panels, degrading them over time. But surely wherever the vapour barrier is within the wall, moisture will trickle down and pool at the bottom? How do you stop this? Also, how much of a gap is considered a vapour barrier?
Here is what I was planning to do...
-Spray glue Silver Bubble insulation to the interior wall of the van.
-Then on top of that and in-between the structural struts of the van, fill with 25mm Celotex/Kingspan.
-I'd then infill the struts with some form of insulation wool - maybe recycled plastic bottle insulation.
-Then I would cover the Kingspan with a roofing membrane (eq Tyvek), but this would sit over the struts therefore hopefully creating a gap (vapour barrier) between this and the Kingspan.
-I plan to board the inside of my van with cedar cladding (11mm thick), rather than carpet walls, so this cladding would be screwed directly into the vans struts or, into battons that are screwed into the side of the struts.
-The only thing I may change is by placing a sheet of 5mm ply between the Tyvek and the cedar to help with the rigidity of the interior walls as there will be cabinets mounted to the walls. If I did this I would probably screw the cedar boards to this ply from the back, making up wall sized panels that could be lifted and screwed in place in one hit, but keeping the the appearance of the cedar boards.
I was planning to avoid using any form of spray insulation or expanding foam as it would be impossible to remove if I ever needed too.
Insulation wise, is this sufficient? What about that vapour barrier? Do the bubbles in the silver bubble insulation act as enough of a vapour barrier? I'm guessing not. So if not, how much of a gap do people think is needed between the Kingspan and Tyvek to act as a vapour barrier?
Any help on vapour barriers would be great.
Thank you.