Shingle Replacement vs Installing A New Roofing System: Which Is Better When Replacing My Roof?

So What Is A Roofing System?

As the name suggests, a roofing system is an arrangement of scientifically engineered components designed to provide your roof with lasting, superior protection from water damage and the harsh environment. 

From the materials used to construct the structure of your roof to vapor and weather barriers to flashing, caulking, and shingles, each layer works in concert to give you the protection you expect. When one piece fails to function correctly, the entire system breaks down. Your shingles (or metal roof) are merely the surface protection that you see, and their ability to protect your home or business depends not only on the quality of installation but also on the roofing components underneath.

Shingles that are lifting or falling off expose the layers underneath to the elements and damage. However, lifting shingles can also signify that other parts of the roofing system are not working well. Having your roofing system replaced and not just replacing your shingles or adding a layer of shingles on top of the old ones is the best way to ensure that your home is getting the protection from your roof that it deserves.

Do I Need To Replace My Roofing System When Replacing My Shingles?

The short answer is yes. Generally, if your shingles require replacement, much of the roofing system is in disrepair. If the components beneath your shingles have been doing their job and you address your roofing issues quickly, the plywood sheathing and rafters should be in good condition. However, if your roof is leaking, significant repairs to the foundation of your roofing system are probably required. 

When a roofing contractor removes your shingles, they remove the flashing around the vents, shingles, starter shingles, ice and water barriers, underlayment to start with a clean slate. Once all layers are removed, a good roofer will inspect the structure of your roof surface for damage. They will also check your attic for signs of leaks, moisture, poor insulation and make sure your roof is providing your home with ample ventilation and air circulation. 

Once the roofing contractor is satisfied that the foundational components of your roof are in good working order and up to code, they replace your roof layer by layer, making sure each piece is installed correctly. The result is a lasting, durable roofing system that provides you and your home with exceptional protection. 

We do not recommend simply placing a new layer of shingles on top of your old, worn, missing, and damaged shingles. We do not recommend simply placing a new layer of shingles on top of your old, worn, missing, and damaged shingles. Doing so is like fixing something with duct tape. It is a temporary fix that hides the root of the problem, can even cause more damage to the layers underneath, or worse—your home—leading to costly repair and replacement of roofing structures. Plus, damaged or improperly layered shingles can create openings for pests like rodents and insects to invade your home, leading to even more headaches.

Replacing Your Roofing System Is The Best Way To Repair Your Roof

When your shingles are failing and in need of replacement, it’s best to replace your entire roofing system to ensure that your property is protected and your shingles will last as long as their warranty states. 

It is also important to consider that many shingle manufacturer warranties require your roof to be installed a specific way, using compatible materials to create a complete roofing system. A reputable roofing contractor will make sure your roof is replaced according to the manufacturer’s warranty. 

For a detailed explanation of what a roofing system is and why you should have it replaced when replacing your shingles, read Roofing System Vs. New Shingles: Which Is The Best Roofing Solution For Sioux Falls, SD?

Callaway Construction is a top-rated, trusted remodeling contractor specializing in exterior remodeling, including roofing, siding, windows, and doors. We are a recognized and approved Owens Corning roofing contractor serving communities from Beresford to Sioux Falls, South Dakota. If you have questions about your roof, reach out today. We are happy to answer any questions you have, make recommendations on the best way to repair your roof, and offer free estimates.