Drive three nails alongside the top fringe of the flashing and one at each of the decrease corners. Start by running self-stick underlayment a minimum of 6 in. This supplies an additional barrier if water does get previous the flashing. Cover the entrance wall first after which work your way up the aspect wall. Overlap the sidewall underlayment around the nook onto the entrance wall about 1 in. No one will notice if the last rows usually are not the identical measurement on either side of the ridge, but it can be very noticeable if the row that meets the ridge has a four-in.
Once you get within 8 ft. of the ridge, measure down to your shingles at every finish of the row. If one side is closer to the peak than the opposite, snap lines for all the remaining rows, making the reveal on one aspect progressively larger until you make up the distinction. Following the manufacturer’s nailing directions is critical; improper nailing is the biggest cause of roof failures in storms. Where and how typically you nail your shingles will rely upon wind speeds in your space and the pitch of your roof.
of the valley uncovered on top (3 in. on all sides), and both sides of the valley should widen 1/8 in. Install self-stick underlayment under the steel flashing. If you want multiple flashing in your valley, lay them both in place and ensure they’re straight before nailing them down. Many severe climate areas require self-stick underlayment to be installed a minimum of 2 ft. in from exterior partitions. This means you may want two rows if you have 2-ft. These guidelines can range, so always consult your native constructing official.
Unless your roof is tiny, you’re going to need to get your palms on a pneumatic roofing nailer. Renting one costs about $35 a day or $90 per week, so should you own a compressor, you might as properly buy rather than hire. A compressor rents for about the same as the nailer. If you do not personal a compressor and know you’re going to end your house in less than per week, then renting might be the way in which to go. Be cautious to not nail your shingles any nearer than eight in. Once all of the shingles are put in, snap traces as guides to trim them off.
On heat days, self-stick underlayment will stick to clean decking with none fasteners. The higher the temperature outdoors, the stickier the adhesive on the rolls will get. This ice-and-water underlayment is tricky to work with on super-scorching days; hold that in mind if you plan your project. It’s necessary to make sure all of your underlayment lies flat before you fasten it to the decking.