Roof Shingles Over Shingles

All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof.

Roof shingles over shingles.

Chances are your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. The next shingle should be placed and secured beside the first one. The first shingle should be centered over the line that you marked with chalk.

2 stainguard algae protection is available only on shingles sold in packages bearing the stainguard logo. Secure the shingle with nails one inch from each corner. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Everything can be done at a distance.

This can lead to increased rot mold and decrease the structural integrity of your home. 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. In a shingle over if some of the decking has buckled and warped over the years it likely isn t going to be noticed and fixed. Before you reshingle a roof read our step by step guide for adding new shingles over old ones.

And your family can remain in the home during the installation or repair. Leak around a dormer which the homeowner never knew about long term effects of shingling over shingles. Roofing second layer of shingles roofing. The shingle should also hang about a quarter of an inch over the roof edge.

Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of roofing installed. With a dual layered design that emulates the dimensionality of true wood shake landmark asphalt shingles offer the heaviest weight and widest array of color options in their class allowing you to create or re create the ideal look for your home with. The first thing to know about your roofing project. Step 5 lay the trimmed shingles.

Thanks to digital technology all of your decisions and interactions from selecting the right roofer to choosing a shingle to paying the contractor can be done at a distance. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. For installations not eligible for the gaf roofing system limited warranty see the gaf shingle accessory limited warranty. Our roofing tests focus on a shingle s strength and how well it maintains its appearance over time.

Products with stainguard algae protection are covered by a 10 year limited warranty against blue green algae.