Ground up grow build

1diesel1

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Got the last 3 beams and all the 2x6 stringers for the 5/8 plywood floor to be installed but first the sub floor must be insulated. I’m going to lay fiberglass reinforced scrim at the bottom of the 2x6 then string 16 gauge wire just above the scrim then install batted insulation above that. Will have rite around 3 inches gap between the bottom of the floor and the top of the insulation.
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1diesel1

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What Is a TPO Roof? TPO stands for thermoplastic polyolefin, a single-ply roofing membrane that covers the surface of the roof. The name is a bit misleading, because rather than being a plastic, TPO is actually one of a few different types of rubber, usually a blend of polypropylene and ethylene-propylene rubber.
 

1diesel1

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It’s a shell still got a ways to go. Roof is next. I will be installing 3 inch polyiso rigid board mechanically fastened to the top of the plywood. Then mechanically fasten TPO on top of the ISO. I was wanting to leave the rafters exposed to fasten unistrut for hanging lights and such from the ceiling.
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Scrim on the bottom of the 2x6View attachment 893422R-19 recycled insulation under recycled 5/8 plywood View attachment 893423View attachment 893424
is that breathable,just asking if it cant breath ,mold bro,i took chicken wire and stapled it all the way on bottom,layed my insulation in ,then put 13/16 treated down,chicken wire keeps rats out,living in country has all kind of critters looking for a winter hide away,and the whole reason i mentioned it was on the loafed barn style cabin i built,in the roof,2x6 put house wrap on inside and layed insulation on it then decking board,from the ac inside i got mold in one spot,fixed and replaced bad shit,once i took the house wrap from inside out no more issues,problem was no air in between decking and inside
 

1diesel1

Moderator
Staff member
6,103
313
is that breathable,just asking if it cant breath ,mold bro,i took chicken wire and stapled it all the way on bottom,layed my insulation in ,then put 13/16 treated down,chicken wire keeps rats out,living in country has all kind of critters looking for a winter hide away,and the whole reason i mentioned it was on the loafed barn style cabin i built,in the roof,2x6 put house wrap on inside and layed insulation on it then decking board,from the ac inside i got mold in one spot,fixed and replaced bad shit,once i took the house wrap from inside out no more issues,problem was no air in between decking and inside
It is perforated scrim paper. I follow you on that. I’m always calling out insulating contractors installing with unperforated scrim on the commercial buildings at work.
 

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