There are many types of metal roofs, including aluminum, steel, copper, and zinc. Metal roofs have several notable advantages. First, they’re extremely durable: they can withstand the effects of severe weather events such as hurricanes and hailstorms and aren’t particularly noisier than other types of roofs. Metal roofs are also less combustible than other types of roofs such as traditional asphalt shingles or wood shakes, so you don’t have to worry about lightning strikes.
Metal roofs can also last over 50 years and are highly energy-efficient because they can reflect heat from the sun. They can lower cooling costs by between 10 and 25%, according to a study conducted by State Farm Insurance. They also require almost no upkeep as long as they’re properly installed, and they are highly resistant to rot, mildew, and insects.
One of the few notable downsides of metal roofs is their cost. According to the home improvement information website This Old House Ventures, metal roofs cost on average between $7 and $20 per square foot, which is at least two to three times more costly than other materials such as asphalt. (This figure also varies based on the specific type of metal chosen.) Here is a closer look at how a metal roof installation works.
How Does A Metal Roof Installation Work?
A typical metal roof installation consists of the following steps:
1. Removing Your Previous Roof
Before doing anything else, your old roof needs to come off, and a full removal is often recommended. Even though you can technically install embossed metal panels over outdated asphalt shingles, removing your roof makes the inspection (and replacement, if necessary) of the flashing and sheathing significantly easier. Consequently, there is a lower chance of leaks occurring.
2. Protecting The Sheathing
Water can easily go through the joints in metal panels, which can be corrugated, crimped, or modular panels. An effective way to prevent leaks is by applying waterproofing and high-temperature underlayment to your entire roof deck. This item can also wrap around all fasteners. Alternatively, you can use an electric seamer to crim the metal panels’ edges.
You can also help your metal roof contract and expand freely by laying slip sheets (e.g., rosin paper) between the underlayment and the roof. According to McElroy Metal, self-adhered, asphalt-backed underlayments must be installed within a specific temperature range: 40℉ and 125℉. Additionally, synthetic underlayments can be exposed between 3 and 6 months.
3. Choosing A Strong Substrate
Another key component of metal roof installation is the substrate, which is the material utilized to cover the joists and rafters. This is generally Oriented Strand Board (OSB) or plywood and is applied to the top of a roof.
4. Choosing The Proper Sealant
Finally, be sure to choose an effective sealant or adhesive. If you notice silicone tubes, this is a problem because they aren’t durable. On the other hand, polyurethane-based sealants are designed to effectively stick to (and flex with) metal. Once the metal panels and strips are installed, the ridge cap can be installed on your roof as well.
5. Hire An Experienced Roofing Contractor
Remember that an experienced roofing contractor can help you choose the best type of metal roof given your home’s construction type and your budget. A roofing contractor should also know what types of materials and tools to use, how to properly measure your roof’s dimensions to know how much metal to use, and what your local area’s building codes are (these typically determine whether a full roof replacement is needed).
Of course, you will likely enjoy lower installation costs if there is little repair or demolition needed for your roofing project. Additionally, keep in mind that your contractor will need relatively easy access to a power outlet for their tools (if possible, consider using a generator). It’s also a good idea to keep a dumpster and storage area near the installation site.
Get High-Quality Roofing Installation From Adelphia
Reach out to the professionals at Adelphia Exteriors to learn more about how a metal roof installation works. We provide high-quality and efficient roofing services for both residential and commercial clients throughout the DC Metro area.
Although we began as a property painting company, we have since grown to become so much more than that. Regardless of your needs, goals, and budget for your property improvement projects, our team will work tirelessly to deliver superior craftsmanship.
At Adelphia Exteriors, we understand the many benefits of metal roofs and can install this type of roof efficiently by using appropriate tools and processes. We know that the frequent heat, snow, and rainstorms in Northern Virginia can significantly affect a roof and are thus dedicated to protecting your roof upon installation, regardless of the type of metal you choose (zinc, steel, aluminum, copper, tin, etc.). Call Adelphia Exteriors today at (703) 386-7357 or contact us online to request a free roof evaluation.