Many manufacturers have extended their 30, 40, 50 year and lifetime warranties on their architectural shingles to all lifetime warranties. The shingles haven't changed and there are still many differences between 30-year-old and 50-year-old shingles, including the weight and thickness of the shingle itself. The heavier and thicker the tile, the better it is able to withstand adverse weather conditions, such as wind and light hail. The new warranties generally apply to the original owner or, in some cases, can be transferred to an additional owner.
In most cases, warranties don't apply to commercial properties or homeowners' associations, etc. And in that case, they will revert to the coverage of the original warranty. Timberline HDZ shingles are covered for life (50 years). GAF HDZ shingles also protect your home against algae for 10 years.
The maximum wind protection for Timberline HDZ shingles only is 130 mph if the shingles are properly installed. Any type of defect in the roof tiles may not be affected immediately after changing it, but it could appear years later. It's also important to note that the different components of the roofing system can also vary in terms of warranty coverage, meaning that even if the shingles are covered by a lifetime warranty, other major roof structures can still be at risk. Installing a new roof is a substantial investment, and it's easy to get stuck comparing different types of roofing shingles and choosing the most attractive profile and color for your home.
For shingle roofs, GAF offers many types of roofing shingle warranties depending on the type of shingles being installed. Most reliable roofing contractors will repair any decayed roofing during installation to ensure that the shingles are intact. A roof warranty helps you avoid having to pay out of pocket if roof tiles have a manufacturing defect.