After you ve laid the roofing felt on the rest of your roof using roofing cement and nails at the edges mark the center of the roof with a chalk line.
How to install a dimensional shingle roof.
Continue laying your shingles horizontally up the roof.
Mark a chalk on subsequent roof layers upward.
After that correctly positionthe first shingle and properly snap a line of chalk across the roof to mark the top layer of the shingles.
Before you install your first shingle use your utility knife to cut 6 inches off of the side then lay it on your roof allowing the architectural shingles to hang between 1 2 to 2 inches over the edge.
Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof.
Measure your roof to determine the number of shingle bundles and felt rolls also known as underlayment needed to cover the roof.
Starting at the bottom of the roof apply a row of starter shingles with roofing nails.
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Apply a cover of starter architectural shingles.
Step 5 apply dimensional shingles to the rest of the roof.
Next lay the first full row of shingles so they re directly covering the starter row.
Starting at the bottom of the roof map out a guideline with chalk.
When installing shingles start by laying a narrow row of shingles at the bottom of the roof along the edge.
Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
See below for a shopping list tools and steps subscr.