I have a 1900 sq ft roof with a 6/12 pitch. Do you suggest using asphalt fiberglass shingles or asphalt organic singles and is it enough to place 30lb felt paper at eaves.
Answer:
A good system of re-shingling entails removal of all layers of old shingle. Following that, ice & water shield can be installed along the lower edge of each roof panel. This shield has to go up high enough to be at least nine inches past the exterior wall of the house or whatever structure there is under it. Roof decking that may be in need of repair is now addressed. The bottom row of shingles is reversed so the tabs face up the roof and when the finishing row is placed over this, the seams do not line up. The cellophane strips do not have to be removed from the shingles because they have perforations permitting the shingles to seal with them still in place. Black, 15-pound building felt is then installed horizontally on the remainder of the roof to within a couple of inches of the peak before shingles are applied. At the peak, there should be a baffled ridge vent running from gable to gable on straight runs and from the gable back to within a couple of feet of valleys if they exist. In the case of a cottage roof, this system will give you more efficient ventilation than any other. The valleys themselves should also be amply lined with ice & water shield under whatever metal flashings there may be. The chimney, if it needs attention, should be addressed before any of this starts. The twenty-year asphalt shingle is presently the most cost effective product on the market.
Courtesy of Ren Molnar, Construction Consultant at HomeFocus.com. I can also be reached at (613) 748-3003 and Home Focus – The Radio Show is broadcast live 8 to 10 A.M. (Ottawa, Ont. time) on Saturdays on www.cfra.com. In the interests of retaining credibility and in fairness to all, I cannot recommend prices, people nor companies for various projects.
