Trusted Tip, Asphalt Shingles
When our trusted inspectors perform a home inspection, we commonly find issues with Asphalt shingles. Typically asphalt shingles last about 20 years however this can vary based on the type. It can also vary based on conditions found at the home such as trees near the house, poorly ventilated attics, sunlight exposure etc. They are classified by the warranty offered by the manufacturer, 10 year, 15 year, 20 year, 25 year, 30 year, 35 year. An Asphalt roof is much more likely to leak at the flashings around pipe penetrations, roof vents, chimneys, wall intersections and valleys than it is to leak in the field of the roof. Even a brand new roof with improperly installed flashings can be leaking.
When looking at a home you are considering purchasing, have a quick look at the roof from the ground. If you see the shingles curling, loosing the coloured granules, patches, roof tar or growing vegetation you should be suspicious that the roof may need replacement. It is also a good idea when inside the home to look up at the ceiling for signs of water damage or patching.
Replacing a roof on a home is a significant expense and can be more costly if the home as been affected by water damage. Of course it is still always recommended to have the roof looked at during a prepurchase home inspection from a trusted inspector.
Here is a CBC Marketplace investigation on Asphalt shingles ..be wary!