Guide About How To Install Metal Roofing Over Shingles

Metal Roof Installation

Last updated on January 9th, 2024 at 02:02 pm

Consider switching to a metal roof if the shingle roof on your home shows signs of wear and tear. It’s a wise decision because metal roofing is strong, eco-friendly, and attractive! Install metal roofing over shingles is often wholly safe. You shouldn’t experience any issues if the roof is in decent condition and isn’t overly heavy. We’ll walk you through what to expect when having metal roofing done,  even though it’s something you can only accomplish on your own. However, if you’re working on a shed or other minor construction, you may always try this!

Steps To Do Before Install Metal Roof Over Shingles 

These are steps you should do to save money on the Install Metal Roofing over shingles.

  • Remove obstacles such as air vents and pipe flashing.
  • Fix damaged shingles that are cracked or ripped.
  • Clean up any debris that can cause a problem by sweeping the roof.
  • Before installation, take note of any leaks or cracks in the roof that could cause more damage if left neglected.

Install Metal Roofing

For homeowners, installing a roof is a challenging task. Although a homeowner with some knowledge of roof care can occasionally fix essential preparation and maintenance for their roof, it is always best to turn to experts. Because you lack experience, you risk damaging your home and endangering yourself whenever you perform a do-it-yourself roof task. Don’t expose yourself to unnecessary risk. For guaranteed results that will satisfy everyone and ensure that your property has a correctly and professionally built metal roof, could you leave it to the specialists?

Comprehensive Guide: Install Metal Roofing Over Shingles

Step 1: Measure your roof’s surface precisely.

It would help if you took an accurate measurement of the roof surface to prevent problems. After obtaining this, calculate the amount of metal required to ensure a precise fit. Being stuck in the middle with no idea how to fix it is the last thing you want to happen!

Step 2: Cover the whole roof with roofing felt

You can install roofing felt over the whole surface of your roof after taking an accurate measurement. This will assist in shielding your roof from potential installation-related damage.

Step 3: Start attaching the metal panels.

The next stage is to begin install metal panels. This kind of installation is what you want because it will be less troublesome in the long run and last much longer than shingles.

Step 4: Put in foam or rubber closing strips

The rubber or foam closure strips are installed after the metal panels are positioned. Doing this may reduce the chance that water will enter the joint and damage the home interior.

Step 5: Attach the ridge cap 

The ridge cap must be attached once the rubber or foam closure strips have been installed. Before beginning work, a metal roofing specialist would often make this for you, have it expertly cut, and install it on your roof.

Benefits Of Metal Roofs Over Shingle

Overshingling an existing roof with a metal roof has numerous benefits. You need to be aware of these because, should the project’s advantages outweigh its drawbacks, it might be worthwhile.

  • Since metal roofs reflect sunlight off of them, they last longer than asphalt or slate roofs and can lower your home’s energy expenditures.
  • Rain and wind noise from the outside may be reduced with metal roofing.
  • Metal roofs can be installed quickly and efficiently since they are lighter than other roofing materials.
  • Since many prefer to avoid dealing with shingle upkeep, the longevity of metal roofs is its most outstanding feature.
  • Depending on your requirements, you can select from various metal types.
  • You can give your house a clean, modern look by using the metal roofing panels.
  • For added peace of mind, metal roofs usually provide labour guarantees and warranties.

Install Metal Roofing

 How Should A Metal Roof Be Installed Over Shingles?

To keep a space, install battens first, then lay your metal. The most used installation technique is this one. On top of the shingles, 2 by 2 in (5.1 by 5.1 cm) or 1 by 2 in (2.5 by 5.1 cm) boards must be installed in horizontal, parallel strips. This leaves a space between the metal and the shingles, allowing your roofing materials to expand and contract naturally in response to temperature variations. Additionally, this space prevents moisture from accumulating between your roofing’s layers. The shingles will protect your roof in case the metal roof leaks and there is a gap.

 Is Underlayment Necessary If I Have A Metal Roof Over Shingles?

  • No, but only if the quality of the shingles is outstanding. Before you install your roofing material or battens, you apply an underlayment layer of roofing fabric. It helps with moisture absorption and keeps leaks from becoming out of control. It’s unnecessary to install an underlayment over your shingles before installing battens or metal roofing if your shingles are in excellent condition. Before attaching the roofing, some contractors will place plywood over the battens and secure the felt. But since this adds a lot of weight, if the shingles are thick, this step is frequently skipped.
  • If you would like an additional layer of safety, you should utilize an underlayment. Underlayment acts as a barrier to defence. It keeps leaks from happening, absorbs moisture, and shields your metal roof’s underside. Even if installing an underlayment isn’t necessary, hiring a contractor will only cost you a little because it’s inexpensive.

 Is It Possible To Install Metal Roofing Over Damaged Shingles?

Install Metal Roofing

No, shingles that are damaged or leaking must be removed beforehand. Many believe install metal roofing will be less expensive than replacing their shingles. Thus, they want to install it over shingles. Sadly, there is just one situation in which stripping the shingles is necessary. Before installing metal roofing over the exposed framework, a roofing contractor must remove the old shingles and replace any joists that are broken or leaking.

  • Install metal roofing over a broken shingle roof may eventually cause the shingles to crack and fall due to the additional weight of the new roof.
  • Shingles that are damaged must be removed regardless of how you want to go about it, as a contractor must still examine the surface underneath.


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