They are more durable than asphalt shingles but less durable.
Replace shingle roof with metal.
The cost to replace the roof on most homes is 4 000 to 10 000 and most spend about 8 000.
By contrast a homeowner will likely replace an asphalt shingle roof two or even three or four times over a 50 year period.
Every roof needs to be evaluated individually.
In a typical year approximately 90 of the roofs our company manufactures are installed over old shingles.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.
A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
Metal roofs cost an average of 4 500 to 11 500 including installation and materials.
Learn why a metal roof is a long lasting energy efficient roofing option.
Roofing cost per square foot when calculating roofing costs per square asphalt shingles run from 350 and 500 per square metal or tin roofs costs 600 to 1 200 per square and concrete or clay costs between 1 200 and 1 800 per square.
Labor itself averages 300 to 500 per square and 4 500 7 500 for a 1 500 square foot roof.
Metal roofs generally can run from 120 to 900 per 100 square feet one 10 foot by 10 foot area or a square of material while asphalt shingles will be between 100 and 200 per 100 square.
Otherwise you will need to remove the shingles.
How complex is the installation.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
Remove roof shingles before installing a metal roof.
The cost can be more for larger homes homes with complex roof designs or when installing more expensive materials.
Find out how to replace asphalt shingles with a tin roof.
If you are replacing your current roof add 125 to 500 per roofing square for old roof removal.
Metal shingles offer solid protection to buildings from homes and offices to industrial buildings.
Overall while the cost of a metal roof is more expensive than asphalt roofing about double it can save money over a long period.
In my opinion going over the old shingles is worthy of consideration because of the benefits of doing so.