Vancouver Roofing Companies - What Underlay Should You Get

Some Vancouver roofing companies fail to install underlay which is a real shame. When you do not install underlay what you find is that when you have a asphalt shingle you and are under ventilated the temperature can increase to such a degree that the roof deck absorbs the asphalt and getting the old roof off is virtually impossible. The other benefit to a underlay being installed is it acts as a second layer to deflect any water if any small hole should appear on the roof. Granted if the tear or hole on your roof is large enough the underlay may leak to. There are some synthetic underlay’s out there that is as water proof as the roofing shingles.

Underlay comes in several forms in Vancouver with most of the underlay coming in two forms. Synthetic or organic which is usually made out of paper. This paper underlay is still used today and is one step above not getting any underlay at all. Paper underlay does the job but is damaged if your roof is under ventilated and has a high moisture level in the attic. When paper gets wet it contracts and in the case of your roof it can tear and is damaged. The synthetic underlay today is made in two ways. some manufactures make a fibre based underlay made from various products. Some fibre underlay’s offered by a Vancouver roof contractor are impossible to tear when made this way. The other way to make synthetic underlay is rubber based.

Vancouver roofing companies generally stick to the underlay that is manufactured by their roofing shingles. Most roofing shingle manufacturers that supply Vancouver offer a underlay which best sorts their product. Roofing done on a smaller budget may use paper underlay but you are probably not going to save as much as you originally thought

By: Ardelle Roscoe

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