Shingle Warranty On Roof Over

The information needed to register a warranty includes installation date shingle type shingle color and number of squares.

Shingle warranty on roof over.

Installing a new roof on top of your old roof will void or shorten your warranty in most cases. It can also cause the new shingles to stick to the old shingles causing bulges. This can cause the roof to wear unevenly. Unfortunately homeowners sometimes see the term of their warranty and assume that s how long their roof will last.

A second layer of shingles will expend heat more slowly which will shorten the shingle lifespan. Unfortunately this is not usually the case. All stainguard plus labeled shingles carry a 25 year limited warranty and 10 year non prorated period against algae discoloration caused by blue green algae also known as cyanobacteria. Although shingle warranties have terms that extend upwards of 20 years the reality is that the typical lifespan of a laminate roof in southern ontario is usually between 20 and 25 years.

There are a couple reasons for this. All stainguard labeled shingles and ridge cap shingles carry a 10 year limited warranty and 1 year non prorated period. To make it convenient click on the register a warranty link below or call 1 800 roofing to register your warranty. A warranty that covers replacement shingles but not labor may be worth only a few hundred dollars of the thousands needed to repair or replace your roof.