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Moisture Drive Concern... Disregard the last post,error !! Post New Topic | Post Reply
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erik williams
Posted: May 18, 2008 08:13 AM
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Moisture Drive Concern... Disregard the last post,error !!
I will be installing "Hardy Board" siding on a house in central florida on the west coast. What I want to do is; -Remove the existing wood siding, dry-in paper and exterior sheathing. -Spray directly to the plaster wall -Then install new exterior sheathing, dry in and Hardy Board siding. Will this work? My concern is condensation between the foam and the Hardiboard siding... |
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mason
Posted: May 18, 2008 06:45 PM
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Is the foam being installed to the interior or the exterior? So long as there is a drainage plan where condensation can drain to the exterior and not to the interior of the building, you are ok. |
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erik williams
Posted: May 18, 2008 08:12 PM
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Mason, I plan on spraying the exterior side of the interior plaster walls once I remove the siding and exterior sheathing... with 2 inches of 2lb closed cell. The home sits approx 2 feet above the ground and all of the framing is wood. Is it safe to say that condensation if any would drain to the ground, without having a negative effect on the 2x4 wall joists and or exterior sheathing?? Or should I coat the exterior side of the spf, encapsulating the 2x4's prior to install of the exterior plywood sheathing. I assume that the 1.5 inches of space between the spf and the inside of the new plywood sheathing would be sufficiant room for the condensation to evacuate Thanks |
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mason
Posted: May 19, 2008 04:59 PM
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The foam is moisture resistant and does not require a coating to repell water but there should be a way for any water from the outside that gets in the cavity to drain. (either from leaks or condensation). |
