Search the forums

Loading

Re-Siding & Retro-fit job

BurgessBuilt's picture

Hello All,

I'm going to be stripping the terrible old siding off of my house and wrapping it with rigid insulation and finishing with strapping and vicwest steel cladding.  Here's the dilemma, I want to use Energy shield (ISO), probably 2.5 inches thick for the maximum R-value while still maintaining simplicity in the furring details.  But my house was built in the 70's and is of 2x4 construction, and it has a 6mil poly stapled air barrier beneath the drywall, and I'm afraid that I will end up with moisture problems down the road.  

Does anyone know a way around this while still sealing the Energy Shield or am I stuck with using XPS foam instead and settling with a lower R-value??

I would prefer not to install an HRV.

 

Thanks!

Where do you live? (post #207308, reply #1 of 3)

Where do you live?


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

I'm no expert, but Roxul does (post #207308, reply #2 of 3)

I'm no expert, but Roxul does have a very permeable rock wool board.. Comfort Board IS or something.   Saw it at Home Depot (Canada) and it is like a very still compressed Roxul batt.

http://www.greenbuildingadvisor.com/blogs/dept/musings/installing-mineral-wool-insulation-over-exterior-wall-sheathing

If you are northern US or Canada, it might be a worth looking into..

Thanks,  I will look into (post #207308, reply #3 of 3)

Thanks,  I will look into Roxul, I've also heard of terra-foam extruded polystyrene by beaver plastics. And to answer the previous question.  I am in Whitehorse, Yukon, Canada, way up north.