How to Build a Deck or Porch with a Roof…Part 3

With the roof covered in 7/16″ OSB panels, we turned our attention to trimming the edges off the 2″x12″ boards; thus, creating square edges on the sides and corners.






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Next, we began installing cement fiber board for our fascia, cutting it lengthwise to meet the dimensions of our cut 2″x12″ outer roof joists.  As you can see from the below pictures, we did allow the fascia to slightly extend below the 2″x12″ roof joist, over the deck area, at least 2″.  We used 2″ galvanized nails to attach the fascia.

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We also added filler blocks in between the ends of the 2″x12″ support boards (pictured below after it was stained) so that there would not be a gap between them.  This is not crucial, just bugged me seeing the gap between the ends of the 2″x12″s.  You’ll notice in the pictures that we only installed fascia up to the edge of the house.  This is because we knew we were going to have the roof replaced and they would need to be able to install the flashing under the fascia where it would be over the existing roof (you can barely see the flashing behind the fascia and above the new shingles in the picture below, far right).  So, after they had ripped off the roofing materials, they installed the flashing, the rest of the fascia, and 1″x2″ cedar boards that they placed along all the edges of the deck roof which the drip edge attached to.  Installing the 1″x2″ cedar boards is not crucial, I just prefer for the rain to have a gap between the drip edge and the fascia, and the 1″x2″ cedar boards provide that.








As far as the roof replacement goes, we knew we wanted to replace the 3 tab shingles with architectural shingles.  So, we went ahead and had a friend of ours, who has a roofing company, come in and rip off all the old shingles/materials and replace the entire roof:  this included using a self-sealing membrane in roof valleys and around penetrations, installing synthetic underlayment, installing flashing along the edge of the new deck roof, new drip edge along all the fascia on the entire house, and installing architectural shingles – plus they painted the vent stacks, chimney, etc. to match.

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At this point, the only things we had left to do are:  the deck railing, the stairs, and the always “fun” job of staining the wood.  We’ll show you how we did each of those, along with a bunch of pictures, in the final part of How to Build a Deck or Porch with a Roof.