What is the lifespan of the asphalt shingles that a typical builder in Ontario would have installed in 2006 (15 years ago)?
A number of shingles have curved/changed colour from medium brown to dark brown now that they are 15 years old.
What would happen if I do not replace them?
Can I not replace them for another 15 years = 15+15 years = 30 years?
Is it very costly to replace them with a steel roof (dark red in colour)
relative to asphalt roof in Ontario?
Depending on the quality standards of the builder, and other variables (ex. Amount of exposure to the sun.)
Metal roofs look very nice and properly installed will last for many years. Check with the contractor to see about the color fading.
A laminate shingle with a 50 year transferable warranty is a popular choice. But to each their own depending on the style, design and budget of the home or project.
Either way, metal will usually be more than asphalt or laminate shingles in the short term.
Replacement of the shingles can add up also. Metal can go over the existing roof(with strapping), so you save on removal and disposal fees.
It's a customers choice. Either way, both will add beauty and longevity to your roof if installed properly.
I find the lifespan ratings of all shingles to be marketing gimics. Read the detailed fine print on the "manufacturers warranties" They will be pages long and basically will apply too "perfect-idea conditions" which of course is 100% unrealistic. The area you live with specific weather patterns, the part of country you live in, the house type, the direction of house, any trees near house or touching house, freak weather storms that happen time to time, amount of daily/yearly sun exposure, animals/birds on a roof, factories nearby spewing chemicals and finally the company that installed them and how and the condition of roof before install. Best install is from scratch on new roofing not a re-roof over old. Companies and installers will try to dazzle you with 25-50 year or even lifetime products!! Basically if you get 15 years out of asphalt you are doing good. More than that is bonus every year they last. The biggest component to longevity in any shingle product is the install. Peeling if only a few spots, just ignore it. A curving shingle roof can get really bad and still function but looks ugly and will soon leak. It usually is a sign its time to replace very soon. More importantly check the vents and stacks etc. on roof to see the condition, these will leak well before the shingles do. Steel is 100% better but also 3x the cost.
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