Shingled roofs are the most common type of roof today, but you might be tired of the way your shingles look. If your shingles are no longer doing their job, you might want to consider replacing them with a metal roof. Metal roofs look great and last long, but going from a shingled roof to a metal roof may require extra work. Here are three questions you may have about replacing a shingled roof with a metal roof.
Will The Old Roof Need To Come Off?
One of the main questions people wonder is whether or not the shingles must come off before the metal roof is installed, and there are several answers for this question, including:
- If there is more than one layer of shingles, they will need to be removed first. This is something that most building codes require, and it is primary because of the weight of having several roofs on a house.
- If there is only one layer of shingles and they are smooth, even, and straight, the roofer might be able to place the metal directly over the shingles without removing them.
Metal doesn't tolerate moisture well, and shingles have moisture in them. Because of this, if a roofer leaves the shingles on the roof when installing a metal roof, he will need to properly vent the roof. There are several different ways to do this, including:
- Use vented metal roofing materials – these are generally strips of metal that resemble the shape and size of asphalt shingles. Using these strips provides very small gaps that are large enough to allow moisture to escape, but small enough to prevent water from coming through.
- Place wood strips on roof – another option is to raise the metal roof up slightly by placing wood strips directly on the shingles. When this is done, it creates a space between the shingles and metal roof, and this space is essential for proper ventilation.
What Are The Benefits Of Placing The Metal Over The Shingles?
If it is possible to keep your existing roof in place and add a metal roof over it, you may want to choose this option. This option offers several key benefits, and these include:
- You'll save money – ripping off an old shingled roof takes time and money.
- It's less messy – when a shingled roof is ripped off, it makes a huge mess and requires a dumpster.
- It's better for the environment – asphalt shingles are primarily made of bitumen, which is heavy oil. This material is known for causing global warming and shouldn't be placed in landfills.
- The project will take less time – it will also be faster for the roofing company to complete the job if they do not have to remove the old roof first.
These are some of the key benefits of placing a metal roof over shingles, but you should not do this unless roofing contractors inspects your home and agrees that this is a safe way to handle the job.
Will A Metal Roof Cost More Than A New Shingled Roof?
Metal roofs are more costly than shingled roofs, but metal roofs last longer than shingled roofs. Metal roofs can last up to 50 years, or maybe even longer. A shingled roof will only last 20 to 30 years at the most, and this is a factor to keep in mind when comparing prices.
When you look at average costs of roofs, you will see that shingled roofs can vary drastically in price. This is due to the numerous types and options available with shingles, but according to Cost Owl, the average cost for a 1,500 square foot house with standard shingles is between $3,750 to $6,750. The average cost for a metal roof on the same size house is between $7,500 to $22,500.
As you consider completing this project on your house, make sure you talk to a reputable roofing company for advise, suggestions, and costs. Metal roofs are becoming more common today, and you may want to spend some time looking at all the advantages they offer.