Riley shows his way, the only way how to install step flashing. Riley explains its easy to do when it comes to new construction. Installing Asphalt Shingles: 5 Common Mistakes to Avoid. How to Install Step Flashing on a Roof Whenever a roof meets a wall, skylight, or chimney the need for flashing arises. When the water runs parallel to the wall, step flashing is required. Technical details of TORRENT files. TORRENT files are divided into information chunks, or pieces, and those pieces are downloaded with high speeds by requesting the information from various sources, decreasing the burden of one network sending the file. Online torrent downloader. ZBIGZ anonymous torrent cloud client #1. The easiest and secure way to download torrents. Download torrents securely and easy! Convert Torrent files to Zip files Online Convert Torrent files to Zip files Online - For fast downloading. First download your desired Torrent file on your PC. This free online ZIP converter lets you easily compress your files to the ZIP format. You can either upload your file or provide us a link to a file. Moss and paint failure seen on clapboards touching a second layer of roof over shingles Roofing Over Existing Shingles This article discusses retrofitting step flashing on a re-roof where the contractor left the old flashing in place and did not install new sidewall, step flashing. Before we get into the retrofitting we first must discuss roofing over existing shingles. It is possible to install new shingles over old shingles. While I do not advocate doing this there are a few reasons why people do this, they are: • It’s a lot easier • Less mess • Less cost A roof over is easier than for a tear-off job because you can use the existing shingles as guides for laying the new ones. But you must take care to install the shingles correctly so they lie flat. A proper job involves retrofitting step flashing into the side wall as opposed to relying on the flashing. Tear off All Shingles for Best Practice: In my opinion the advantages for tearing off the old shingles far out weigh the three reasons to roof over. The most important advantages to a complete tear off are: • Manufacturer warranty • Proper sealing of shingles • Proper flashing and ice and water installation • Proper fastening into roof deck • Roof deck sheathing inspection and repair • Reduced weight from your roof rafters Manufacturer warranties do not usually cover a new shingles being layered on top of old ones. The reasoning being that it is unlikely that the new shingles will not install flat enough to sealing to each other. Proper sealing is necessary to protect the shingles from wind damage. Re-roofing does not allow the contractor to inspect the roof deck for rot or damage and often times the contractor fails to use longer nails on a re-roof and the new roof fasteners have not penetrated deep enough into the wood deck. Many times a roof job is done without replacing the step flashing and that is where additional problems can occur. Step flashing is needed whether a contractor installs new roofing or re-roofs over existing shingles. Powerdyne superchargers bd11. On re-roofs, the sad case is that contractors do not always take the time to retrofit step flashing because it slows them down, adds cost and additional carpentry work to repair or replace siding. Frankly these contractors, and many homeowners, do not want to deal with the added work scope or the increased cost. What is Step Flashing? Step flashing, L-shape flashing pieces woven into the shingles as you work your way up the roof protects the interface between a roof and a vertical side wall from water leaks. The step flashing transitions a vertical wall drainage plane onto the roof drainage plane. Step flashing comes in different materials but the most common seen on residential homes is aluminum and copper. Re-Roofing Causes Problems: In the photos on this post you see that the house siding is touching the second layer of shingles as evidenced by the growing moss and peeling paint. Siding rot, carpenter ants and side wall leaks occur next. At one time this siding was most likely spaced 1/2″ to 3/4″ off the shingles but the re-roof installation raised the shingles, eliminating the spacing. The main reason to install this siding spacing is to provide an an air space and drainage plane between the siding and the roof shingles. The air gap allows water to drain from the roof and the siding, end grain, to dry out. To make matters worse the roofing contractor re-roofed this house and did not install new step flashing. This allowed water to get under the new shingles and into the new nail holes. Because the siding is now buried into the new roof, water can also work its way along the top edges of the clapboard siding and penetrate the building envelope, rotting the side wall plywood. Retrofitting Step Flashing Without Removing the Siding We needed to cut back the siding to create a new air gap but we knew that 3/4″ was not enough to slip flashing under without damaging the siding. Our solution was to cut a 6-1/4″ of the siding away, creating a space to allow the installation of step flashing.
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