How to Install Metal Roofing without Removing the Asphalt Shingles

Posted on January 20, 2011 by Dana

When it comes to house remodeling the most difficulty is with the removal of previously assembled structures. If you are considering replacing your old asphalt shingle roofing for metal roofing installation, wait. You can install metal roofing over the old asphalt shingles.

Well, it sounds good and easy, but is it viable? Yes, it is. Besides, it saves you a lot of workload and of course, time. It also ensures strong support for your around-the-house roofing made of lightweight metal. The only thing you need to worry about is to avoid your metal roof from showing the shape of the asphalt shingles layer beneath it.

This can be done very easily if you have the basic know-how of installing metal roofing over asphalt sheets, and it gives you rewarding results. Here are some tips on installing metal roofing without dismantling the old asphalt shingles. Be aware of the mechanical issues you need to resolve before your installation of the metal roofing over asphalt shingles.

1. Familiarize yourself with the product and manufacturing instructions. This is the first and foremost thing you should do.

2. Consider how the old roof was ventilated. If it had any problems with ventilation you can overcome them by keeping strips of wood or battens along the asphalt roof at regular intervals to allow free flow of air. Adhere to your manufacturer’s instructions when you decide on the spacing between the wooden strips.

3. The second issue that should not escape your attention while considering metal roofing installation over asphalt shingles is about controlling the moisture under the roofing. Keep a roofing felt or any other synthetic material which absorbs moisture under the metal roof and you are done with a moisture proof metal roof installation. It will keep out any water that might seep in through the metal roof panel.

Besides, the same technique will also help you to stay calm inside your home by reducing the effect of noisy hailstorms.

4. Now think about the joints. If the edges are curvy and unparallel, they will not make perfect joints. So make sure that everything that goes into installation is straight and square.

5. Even if you are installing the metal roofing over asphalt shingles your know-how of metal roof installation is very important. It is especially so in case of an interlocked roofing system because it uses interlocking mechanism on four sides.

6. If you are doing the metal roof installation for the first time, it is worthwhile to consult a professional carpenter or a contractor.

7. Metal flooring is slippery especially when it is wet. So while working on it you should be conscious about any danger your carelessness can bring about. Take safety advices from the professional you consult.

8. The most important thing to keep in mind is that once the installation is over you cannot redesign the metal roofing as easily as you do in case of other roofing. So when you install it, be sure about what you are doing and try to avoid flaws.

Metal roofing has a lot of benefits compared to other roofing methods. Mostly, the metal shingles come with a life-time warranty. It is also hail and fade protected with a durability of more than 50 years. in addition to all that, it gives a clean and crisp look to your home’s exterior.