Now that the trusses were all in place and secure, we could begin to put the roof on. The
first thing we did was to put the facia board on the end of the tails of the trusses. We then
proceeded like we had when putting the roof on the house. The biggest difference was the
steepness of the garage roof compared to the steepness of the house roof. The house roof
was only a 4/12 pitch where the garage roof was an 8/12 pitch. Because of the steep
angle, it was necessary to use some additional equipment that we had not used on the
house roof. We used wall jacks (the same ones we used to attach the 4x8 sheets of
extruded styrofoam to the house walls) with some 2" x 6"'s to create a platform to stand
on in order to put the first two rows of OSB on the trusses.
After we had the first two rows of OSB down on the trusses, we installed roof jacks on the
roof. Roof jacks are usually made of metal and are nailed to the roof. They then have an
angle bracket that points up away from the roof. You can lay a 2x6 on this and when used
with another roof jack, you create a flat platform that you can stand on. With the roof
jacks in place, we were able to continue up the roof towards the peak.
Here is a good picture of the roofjacks and how they are able to create platforms that you
stand on.
Make sure that you check the spacing of the trusses as you nail the OSB sheets down to
insure that you have 24 inches on center from truss to truss. Once all of the OSB
sheets were put down, the next step was to put the facia board on the end of the roof
going from the garage wall up to the peak of the roof on both sides. We did things a
little different on the garage roof than we did on the house roof. This time we cut
2x4's that were 10 1/2 inches long and nailed them to the backside of the facia board.
When we put the facia board up the side of the roof, the 2x4's created an even spacing
the whole way up to the peak.
The remainder of the roof was put on in much the same way as the house roof was.
Tar paper first, drip edge next, shingles last.
Here we are starting the first row of shingles from scafolding
Remember to turn the first shingle upside down so the shingle on the edge of the roof has
something to seal down onto. Along the side of the house you need to install flashing to
keep the water from going down the siding and into the garage below.