How To Install Metal Roofing Over Shingles: 8 Pros to Get
Repair of the Attic

How To Install Metal Roofing Over Shingles: Advantages and Options

There are billions of square feet of commercial as well as industrial installing metal roofing sprays in the United States, and a significant proportion of them require repairs.

The metal roofing installation on top of existing tiles is an excellent method for suppliers to assist the owners of buildings to continue the period of operation of their newest metal roof as much as possible. So, the question of how to install metal roofing over shingles is beneficial to both parties.

Why Install Metal Roofing Over Existing Shingles?

The material is capable of being an affordable install metal roofing used material, however, it will require service as well as frequent shifts. Thus shingles, numerous owners simply get tired of stable costs, disorder, and interruptions in their business operations. The iron installing a metal roof gives the owners of buildings a conclusion from the cycle of tile change shingles.

An iron metal roof will usually require the most significant initial costs than the latest material, but an iron installing a metal roof is able to serve the most 50 years shingles with the least service. (This is 2-3 times more than the working time of the tiled and installing metal roof!)

The iron metal roof also complements the attractiveness of the building shingles problems, due to the fact that they occur in the most different manners and colors shingle roof.

Metal Roofing Over Shingles

Metal roof panels are environmentally friendly

In addition to strength and aesthetics, the iron metal roof is made from recycled used material and is also one hundred percent subject to secondary processing at the end of the shingles working time. For this reason, it is difficult to find the most environmentally friendly type of shelter than iron panels for the owners of buildings that are eager to be environmentally friendly.

The material is extremely rarely recycled metal roofing, and since firms according to the disposal of residues and landfills acquire a lot of tiles in this shingles way, they often collect a significant payment and shingle roof due to its method.

In contrast to this, the installation of an iron metal roof on top of the existing tiles means that all possible costs for the removal of tiles, including payment due to disposal, are completely excluded. In addition, you get all the advantages of an iron metal roof without exception.

Metal Roofing Over Existing Shingles Options

Equally, as soon as you have decided to stop the stable change of tiles and also use iron panels instead of metal roofing, it is time to establish a certain way of additional weight construction that you are going to use. There are a number of key layouts when using an iron metal roof on top of the existing tiles. Let’s analyze the more famous ones installed.

Metal panel attachment into furring or lathing strips

In this case, wood panels or girths are used single layer in the property complete tear-off the crate in the former metal roof and are also attached to the system further reflect heat.

This skeletal concept can be defined directly on top of the existing tiles or on top of the existing flooring or the underlying cover. Then the newest iron install metal roofing panels are fixed to the skeletal concept re roof.

The mapping previously explains a single aspect to the crate, despite structural problems the fact that, as well as you can understand, there are a large number two layers of options for this complete tear off method. This metal roofing method will usually require less disposal fees disorder than a whole suspension install a metal roof.

But, taking into account the additional costs of the finishing material used as well as the metal roofing installation, the final cost can be similar to a breakaway two layers or new underlayment.

Notice the fact that this is certainly the most environmentally friendly since the material remains in the site shingle roof.

Metal roofing panel attachment

Underlying cover for metal panels

This aspect complements a certain mass of the install metal roofing concept, for this reason it is important to establish whether the system is able to withstand the auxiliary shingle roof mass in one layer.

When applying this alignment, it is important to keep drip edge in mind that the reddish-yellow components in the wood subjected to pressure treatment have every chance to have a hostile effect on the iron asphalt shingles panels for two layers.

Thus, when using sawn timber subjected to pressure treatment underlayment, for the purpose of crating, among the wood frame as well as iron panels, it is necessary to apply one layer an obstacle from #30 felt or artificial underlying cover asphalt shingles.

Metal panel attachment directly into shingles

First, more economical way to install is to attach metal roof panels for a metal roof directly through the existing asphalt shingles to the wood flooring. Despite the fact that this method saves costs and labor costs at underlayment in laying strips, it is important to keep in mind that asphalt shingles often function curb appeal as well as reflection. Also asphalt shingles are able to broadcast inconsistencies of flooring install and tiles through iron metal roofing panels.

Sure, this requirement is considered exclusively aesthetic and also does not affect the working properties of the metal panels in new metal roof, owners who pay asphalt shingles for great interest to aesthetics can preferably approach less mess the aspect of dismantling as well as changing or a concept such as 138T, which I mean talking about asphalt shingles.

Thus, despite the fact that this aspect often involves a more economical installation, someone also guarantees the least energy savings metal roofing.

Second, it is important for many homeowners to highlight that for the purpose existing shingles of direct fastening plans, an obstacle is needed among the unique tiles as well as the latest iron new metal roof. This layer of protection has the main importance in order cost to avoid the wear local building codes of tiles by means of iron panels, as they expand wear gloves and also contract during the working time of the existing roof. Simple barrier materials used contain material #30, an artificial lining layer metal roofing over shingles, or cost including thin insulation from foil from new roof.

Shingle Recover Systems

The 3rd renewal method contains the application of patented 138T three layers tile renewal concept current roof. This concept makes it possible to eliminate the cost and labor required existing shingle roof when using the crate method specified before. In addition, the clip system greatly enhances the appearance of the concept roofing contractor type extra layer.

Perhaps most importantly, however, is ensuring that the Above Sheathing Ventilation (ASV) fan will fit, which will save money and help owners comply their new roof in warmth with energy savings. Keep the topic going in this article: How to Solar Attic Fan Installation: The Gadget That Saves Money.

Invariant concepts (similar as well as 138T) have every chance to be defined and also replaced in each mode. In contrast to this, oblique concepts invoke constructions wood deck in a pre-specific way (usually on the left side to the right). If, during the time of the roof’s operation in the oblique concept in heat, restoration or temperature changes is needed cost, this kind of complicated procedure will be needed on the left side to the right damaged shingles.

Metal panel attachment 138T system

Advantages of Metal Roofs over Shingles

There are a lot of positive aspects in the selection of an iron roof earlier, and they are also made even more if you decide to define an iron roof on top of the tiles. These include:

Advantages of metal roofs in general:

  1. Iron roofs will become, without exception, the most common type for the purpose of owners because of their reputation for strength as well as attractiveness.
  2. They have every chance to serve much longer than the material. In the very process, they have every chance to serve approximately 40-70 years due to the material.
  3. They have every chance to tolerate almost all kinds of asphalt roof of atmospheric conditions, providing security, convenience, and dryness in your home. The downpour will begin to flow rapidly and also freely, and the snowfall will be able to slide freely. Asphalt roof also have every chance to carry gusts of wind up to 140 miles in time.
  4. Numerous of them also have the ability to counteract a fire (if there is a lightning attack or an unusual flame in this case) and also to move the city in the absence of harm entire roof.
  5. They are available in a variety of colors and finishes. These include the appearance of a type of natural cedar or flint.
  6. They do increase the energy efficiency of your building, reflecting the nice warmth, which is able, among other things, to reduce cooling costs by 10-25%.

Advantages of metal roofs over shingles:

  1. By laying an iron asphalt roof on top of the tiles, you will be able to save labor costs in dismantling it, and in addition to avoid its splashing into the landfill.
  2. Iron roofs on top of the tiles also guarantee an auxiliary layer lining your home, adding it in addition to separate.
  3. Metal roofing can be noisy if it is touched by tree branches. It can be a frightening sound when you’re not used to it. So since you’re already up there anyway, take a closer look and see if you need to trim the crown or cut a branch or two. Here you can find some Tree Cutting Tips.

Two workers on roof making iron roofing

Disadvantages of metal roofs

  1. As well as with many other items, there are a number of shortcomings in the selection of metal roofs. Otherwise, they would exist everywhere! The disadvantages may include:
  2. Iron roofs have every chance to be much more expensive than tiles previous roof. Including taking into account their strength, which can help with the period to increase the price and also balance the costs, numerous homeowners simply do not have all the chances to provide asphalt roofs an opportunity for themselves to determine metal structures of broken shingles.
  3. They guarantee good protection from bad weather, however, in many variants, a downpour and the city rattle very loudly near the iron steel roof. A layer of noise insulation is able to help, but this further increases the price.

Is It Cheaper to Get a Metal Roof or Shingles?

You may be arrogant about the problem of the price of the construction of the iron roof on top of the tiles. Despite the fact that it is more economical to purchase tiles (directly for this reason it is available in the bulk of buildings), an iron steel roof ridge is able to guarantee for you the most profitable price in a long-term metal roof over shingles opportunity.

They do not only look attractive and unique in local building department; however, they are also designed in this case, in order to serve for decades longer due to their own strength. In the very process, a competently built iron steel roof can withstand everything without exception.

For comparison, you can read about the lifespan of rubber roofing in different materials: How to Install Rubber Roofing: DIY Guide for Homeowners.

In general, you will never have to acquire metal shingles more than once in your life. Watch this video to avoid installation mistakes:


Chapter FAQ

What is the best way to install a metal roof over shingles?

If you wish to install metal roofing over shingles, it’s recommended to do it one of two ways. The first is to apply an approved underlayment over the old shingles. This is the fastest way to install but it doesn’t provide the flattest surface for metal roofing installation. The second way is to install 1×4 purlins over the shingles. This is more expensive but will also be higher quality.

Can you put metal roof on top of shingles?

Of course, it is possible to compensate for the iron old roof on top of the tiles. But first of all, before you start your own plan, it will be necessary for you to consult with the district construction department in order to find out if they allow this for you metal roof installation. In certain regions, secondary laying of the old roof is allowed only on top of the 1st tile cover metal roof installation, in this case, the laying of the most 2 layers is allowed, as well as in others.

Can you install metal roofing over a shingle roof without furring strips?

It is not recommended to install metal roofing over shingles without furring strips. The thermal expansion and contraction of the metal will rub against the shingle granules and the metal will corrode from the underside. The gaps introduced by furring strips also allow air venting which can reduce moisture. Too much moisture doesn’t lead to anything good: Condensation in the Attic and How to Prevent It: DIY.


Installing a metal roof over shingles is an excellent way to add a new roof to a home without the cost and headache of removing an old asphalt shingle roof. By following some simple procedures for prepping the old roof and adhering to some important guidelines, you can successfully install metal panels, shingles, or standing seam metal roofing over an asphalt roof.

By the way, since you’re doing the once-in-a-lifetime things, put cleaning your attic space on your to-do list as well!

138T metal roofing over shingles

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