If you’re looking to install a more durable, lasting, energy-efficient roof, opting for metal roofing is an excellent choice. If your existing roof is shingled, you may have heard you can install a metal roof over top of it — but is that a safe choice? Will opting for a metal overlay deliver the durability and longevity you need? The roofing contractors at Keyprime Roofing explain what you need to know about installing a metal roof over shingles.

Installing a Metal Roof Over Shingles: Is It Possible?

It’s absolutely possible and even fairly common to install a metal roof over an existing shingled structure. But that doesn’t necessarily mean overlays are permitted in your area. To determine whether you can legally place metal roofing over shingles, contact your local building authority to inquire about code-compliant roof installation techniques.

Even if you’re permitted to install a metal roof overlay, keep in mind that the structural condition of your existing roof is a critical consideration. Because it plays a primary role in determining whether applying an overlay is a suitable option, you’ll need to request an inspection from a licensed roofing contractor.

If the existing plywood and other structural components are in good condition, putting a metal roof on top of shingles is almost always feasible. But if your roof has suffered considerable damage or deterioration and that’s why you’re seeking a replacement, an overlay isn’t recommended.

Factors to Consider When Installing a Metal Roof Over Asphalt Shingles

Though opting for a metal roof overlay can save you quite a bit of money, it may not be the best option if you’re looking for a durable, long-lasting roof. And, if you’re planning to install metal roofing, you’re already on the verge of making a significant investment — one you won’t want to jeopardize by cutting corners. Before you decide whether an overlay is a good choice for your home, consider the following factors:

●        The weight of the roof. Do you know how heavy your existing roof is? Have you had an overlay installed in the past? Though a weighty roof can offer better protection against wind damage, it can place excessive stress on structural components, including roof supports, eaves, and walls. Since installing metal roofing over shingles will add considerable weight to your roof, your home could develop structural problems over time.

If your roof already contains an overlay, chances are your local building code will not permit another. In most areas, building code allows up to two layers on residential roofs, but stipulations vary from region to region. To determine whether a tear-off is required, it’s always best to consult with a reputable roofing contractor.

●        The roof’s warranty. If you’re investing in a metal roof, you want a solid materials warranty, right? For your warranty to remain in good standing, you must comply will all manufacturer-stipulated terms. And in many cases, manufacturers consider product warranties void when materials are installed as part of an overlay. To learn more about the warranty conditions for the roofing you’re considering, consult with a licensed roofing contractor. The professionals can explain what constitutes a breach of warranty terms and recommend the best options for your unique situation. 

●        Long-term roof performance. If your existing roof has any form of deterioration, installing a metal roof overlay will only serve to camouflage existing problems. And unfortunately, those problems will likely grow worse even though you cannot see them. Though a metal roof has a lengthy projected lifespan, you may not get the longevity or durability you desire with an overlay.

Complete Roof Replacement or Metal Overlay: Which Is a Better Option?

If saving money on a new metal roof is your primary goal, a metal roof may be a suitable option — if the structural components of your existing roof are in excellent condition. But if you’re installing a metal roof to take advantage of its long lifespan and incredible durability, a complete roof replacement is almost always the preferable course of action.

Because overlays tend to deteriorate faster than single-layer roofs, many homeowners find themselves paying for repairs sooner they’d like. And, because overlays tend to void materials warranties, those repairs are often expensive. Though a complete roof replacement requires a larger initial investment, the additional expense is well worth the cost.

Looking for a Reputable Twin Cities Roofing Contractor? Contact Keyprime Roofing

Whether you need a roof replacement, roof repairs, or building a brand new home, get in touch with our team at Keyprime Roofing. We specialize in performing cost-effective and lasting home renovations and repairs designed to add lasting value to your property. To learn more about our services or request a free quote, give our Golden Valley, MN office a call today at 952-426-0132 or contact us online, and we’ll be in touch.