Metal Roof Installation Over Shingles in Phoenix AZ

If you’re looking to replace your shingle roof in Phoenix with a metal roof, then why not consider metal roof installation over shingles. 

It is possible and it can save you a lot of time and money compared to tearing off your old roof and starting from scratch. However, keep in mind that this is not a straightforward process and it may require some special considerations. 

To give you an idea, we’ll walk you through the process of how a metal roof can be installed over your existing shingles. This way, you’ll be able to determine whether or not this can be a good option for your home as well.

metal roof installation over shingles

Step 1: Inspection and Preparation

Always start with the inspection of your existing shingle roof to determine whether or not it is suitable to install a metal roof over it. Make sure to consider the following factors:

  • Current roof condition. Your existing roof should not have any significant damage, such as holes or missing shingles, that may compromise the installation of the new metal roof.

  • Number of shingle layers. If your roof has more than two layers of shingles, it may not be possible to install a metal roof over them. Instead, a complete tear-off may be necessary.

  • Weight of the existing roof. Although metal roofs are generally lightweight, installing that on top of the existing shingles roof can put additional weight on your home’s structure.

  • Condition of the roof deck. Your roof deck should also be in good condition and free of rot, mold, or other damage before you proceed with the metal roof installation over shingles.

    Once the inspection is complete, the next step is to prepare the existing roof. This involves cleaning them to remove any debris, moss, or algae that may be present, and making sure that any loose or damaged shingles are repaired or replaced.

Step 2: Install Underlayment

After the roof has been inspected and cleaned, the next step is to install a layer of underlayment. 

It is a waterproof barrier that is placed over the existing shingles and acts as a secondary layer of protection against water infiltration. 

The underlayment is installed in horizontal rows, starting from the bottom of the roof and working upwards. Each row overlaps the previous row and once complete, it is secured with roofing nails.

Step 3: Install Metal Roofing Panels

The next step is to install metal roof panels. These panels come in various sizes and can be made from a range of materials such as aluminum, steel, or copper. 

The panels should be installed starting from the eaves and working upwards towards the ridge. They must overlap each other and should be secured with roofing screws, which should be driven through the high points of the panels to prevent water from seeping through the screw holes.

Step 4: Flashing and Trim

Once the metal roof panels have been installed, the next step is to install flashing and trim. This is necessary to provide a watertight seal around any penetrations in the roof, such as chimneys or vents.

Flashing is typically made of metal and is installed over the underlayment and around the penetration. It is secured with roofing nails or screws and sealed with roofing caulk to prevent water infiltration.

On the other hand, trim is used to finish the edges of the roof and provide a professional, aesthetically pleasing appearance. It is usually made of the same material as the roofing panels and is also installed using roofing screws and caulk.

Step 5: Final Inspection

After the metal roof installation over shingles is complete, make sure to conduct a final inspection to ensure that the roof is properly installed and free of any issues. It’s best to hire a professional as they will have the expertise and experience necessary to thoroughly assess the condition of your roof.

Basically, during the final inspection, the roofer will inspect the roof for any signs of damage, such as dents or scratches, and check the fasteners to ensure they are secure. They will also inspect the underlayment and the seams between the panels to ensure there are no leaks. 

But if any issues are indeed identified, they will recommend the necessary repairs or replacements.

Interested In Metal Roof Installation Over Shingles In Phoenix?

Contact Centrik Roofing! Metal roofing is our expertise so we can help you with its installation. We have the knowledge and skillset required to finish the job effectively and efficiently. We’ll make sure you will have a durable, long-lasting roof – satisfaction guaranteed. Call us today and we’ll give you a free onsite estimate!

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