A few years ago, three-tab shingles were the most popular on the market. Today, laminated fiberglass shingles, which are more resistant, are popular. Architectural shingles, with their unique designs, are available for all types of pitched roofs.
There are different categories of sheathing. Asphalt shingles are popular because they offer good value for the cost. Depending on the roof system, it may be preferable to select a specific covering to overcome problems. It is advisable to talk to a technical consultant regarding covering alternatives.
Yes, because the flashing sealings are under the covering and under the shingles. If they are inadequate, you need to remove the entire covering to replace them. Furthermore, the wall covering is an integral part of the building waterproofing. So it must be in good condition to maintain water resistance and protect the integrity of the building.