How To Re Roof Over Asphalt Shingles

Nail each side of the cap shingle into the roof.

How to re roof over asphalt shingles.

When comparing these products look for the highest numbers in solar reflectance and thermal emittance both on a. We re going to answer that question in this blog so keep reading or give our legacy service team a call at 215 798 9790. Others have been tested by the cool roof rating council. Before you reshingle a roof read our step by step guide for adding new shingles over old ones.

All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. When you re all done installing the shingles snap lines and trim the shingles to the line photo 11. This article series discusses best practices in the selection and installation of residential roofing. Place and nail the shingles from the bottom of the roof to the top.

This article discusses how to prepare an existing asphalt shingle roof for a roof over or for re roofing with new asphalt shingles. Cool roof asphalt shingles help lower that difference to just 5 or 10 degrees by using granules coated with a highly reflective pigment. We also discuss proper asphalt shingle roof preparation for a roofover job. Re roofers have tricks to lay new roof shingles over old so that the same step ups between courses are maintained but if any old shingles are cupped curled or otherwise misshapen those defects will telegraph through to the new layer.

Ensure that each cap overlaps the one below it by 1 4 inch 7 cm. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. The shingles shown here are commonly called architectural. Cut the shingles to size with a utility knife fitted with hook blades.

Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. The cap of each shingle should fall evenly in half over each side of the ridge. If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles. Place the ridge cap shingles over the roof ridges.

Run the shingles long over hip ridges and rakes and in the valleys.