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Algae on asphalt shingles
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A metal roofing contractor explains why he uses single-ply modified bitumen for low-slope applications and how he installs it safely.
Eight years ago, JLC took a look at widespread reports of cracking and splitting in fiberglass-mat shingles. In this update, we report how shingle manufacturers have responded to complaints, and how new product standards are making it easier to judge w
There are more flexible flashings on the market than ever before, made from a variety of materials. We take a close look at what’s out there and provide pointers on choosing the right material for the job.
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We take a look at the key differences between housewrap, asphalt felt, and kraft building paper to help you make the right choice.
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These common oversights will lead to early building failure.
A small roof leak can create expensive problems. An inspector with years of experience surveys the trouble spots on both flat and steep roofs.
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One way to ensure a dry basement is to coat the foundation with a waterproof membrane. We look at the available options and explain how to prepare for and apply them properly.
Reroofing over old asphalt shingles is cheaper than a complete tear-off, but to look good and last long, the new shingles have to lie flat. A veteran roofer explains how to use special flashing, filler strips, and careful layout for a perfect job every time.
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Building a durable driveway
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We’ve fielded a lot of questions from builders who use housewrap air barriers, but wonder how these new mate-ials compare with felt paper when it comes to keeping water out of the walls. An expert in wood technology draws on his own research to explain how the properties of housewraps and felt...
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Rafter sizing chart for multiple shingle layers
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Tile may shed water, but a tile job is not waterproof. A master tilesetter explains how to use trowel-applied and sheet membranes to protect against leaks.
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Conventional steep-slope roofing materials can be made watertight even on low slopes. Here are some details and techniques that work.
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You can still reliably judge organic shingles by their weight. But fiberglass shingles are another story. Responding to problems in the field, the fiberglass shingle industry is conducting research and developing new standards for its products.
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Stripping roof shingles is no one’s idea of a good time. But this survey of roofing contractors reveals tools and techniques that make the work neater, faster, and safer.
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A leading home inspector tells you how to identify and diagnose problems on asphalt, slate, wood, and tile roofs.
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NEB surveys the new species of concrete shakes, plastic slates, metal tiles, and other curious combinations that vie for upscale looks and modest price tags.