Sunday, October 16, 2016

Exterior Sheathing and Roof Insulation

August and September were busy with sheathing and wrapping the building in Tyvek, and insulating the roof and putting all the framing in place for the standing seam roof. 

Starting the sheathing and Tyvek on the Southern exposure

Most of the way up the north wall working off of staging. 

East wall all sheathed and starting to strap down roof insulation. 

About half the insulation up on the roof - some of it is sitting waiting against some cribbing on the west side of the roof while I lay it on the east side. I put a vertical run and a horizontal run of 3" poly iso insulation on the roof for a total R37 insulation value. 

The insulation all in place, along with Grace Tryflex along the lower 6' or so of the roof to help with condensation runoff. 2x6 vertical strapping is beginning to be laid down. I used 12" #15 screws to drive through the 2x6, 6" of foam and 1" roof boards and into the 6x6 rafters underneath. 

Rear wall all sheathed. 

My brother-in-law Ed bringing insulation up to the roof with his bucket truck. Faster than me hauling them up a ladder, though about 30 minutes after he brought this load up, the wind came up and blew about a dozen panels off the roof. 

I put 2x4 purlins 16" on center for the standing seam roof to attach, and laid 3' of plywood with Grace Ice and Water shield to protect against any ice dams. 

Looking at the south end of the building after it was all sheathed and wrapped with Tyvek and the roof prep was done. Next up is having a contractor finish out the soffits, then the roof can go on. 


Same roof detail on the east side. 

Back and east sides of the building also all covered in plywood and Tyvek. 

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