Using Old Flashing On Roof

In fact after diagnosing roofing leaks for 15 years i can tell you that roofs rarely leak in the field of the shingles 90 of the time they leak where the roof stops starts or changes direction which means most of the time the problem is with a flashing.

Using old flashing on roof.

Once even a small section of roofing cement fails you ll have a leak. Follow this old house online. They extend the course 3 8 1 2 inch past the starter course then nail in place then install step flashing then the next course and so on up the roof. On a typical re roofing job where you are replacing an old or underperforming roof it is wise to replace all flashing.

Install the first course of shingles. Installing new flashing is a straightforward process on roof edges but counter flashing or step type flashing techniques are necessary around vents and vertical walls. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Overview how to diy planning.

How to install drip edge and step flashing. This valley has seen its better days but the critical spot carrying water past the image. Old flashing may begin to fail before the new roof s lifespan is over. How to install ice melting roof cables.

The remaining siding on the sidewall will overlap the step flashing and nail. Galvanized metal or aluminum is considered the best to use for roof flashing. More roofing how to diy in this topic. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

However there are limited circumstances where a roofer may decide to reuse flashing. More roofing videos in this topic. L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface. What is roof flashing.

But it doesn t work that way. The flashing is nailed to the roof and it is critical that the nail placement is proper or it will result in leaks. Flashing a humpy old roof valley requires a little give and take and a backup plan. Using proper flashing components and maintaining penetrations like skylights are critical to the performance of the roof as a system newer technology in flashings and roofing materials not to mention product performance levels has improved greatly in the last 20 years and flashing components need to be consistent with the new roof.

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