Robert Evans' Jr Blog

Roofing Valleys Correctly

Posted by Robert Evans on Feb 20, 2019 10:59:42 AM

Welcome to Robert Evans Jr. Contracting

Weaved Valley

Depending on your roof design you may or may not have valleys. A Valley is where 2 roof lines come together. Here is a picture of Robert Evans JR. Contracting Inc. installing a Weaved "Closed valley".  Closed valleys are those where shingles on one or both sides of the roof extend across the valley onto the adjacent roof slope. There is two kinds of closed valleys: cut valleys, which are less expensive to install {due to less waste in material and quicker labor install} and are the most common, and there are woven valleys as you see above in this picture. When Installing the woven method, shingles from both roof slopes run through onto the adjacent slope, alternating with each course. This is done differently with different types of roofing shingles depending on 3-tab, thickness, archtectural type shingles. Woven valleys is not recommended to be installed on a roof pitch less than 4:12. 

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Recycling Roof Shingles

Posted by Dan MacDonald on Jan 4, 2019 12:24:08 PM

Roof Shingle Recycling

The EPA estimates 11 million tons of asphalt shingle wast are generated in the U.S. each year. About 10 million tons comes from roof installations and tear-offs and the remaining 1 million tons are scraps from the asphalt shingle manufactures. Every ton of shingles that is recycled instead of sent to landfills is equivalent to saving one barrel of oil form use, according to the Northeast Recycling Council. Clearly, diverting asphalt shingles away from landfills can have a significant and positive environmental impact.

Most recycled asphalt shingles are ultimately reused in road construction or maintenance. State-level Department of Transportation (DOT) offices have the authority to specify whether recycled asphalt shingles can be used in state-funded road projects, and many DOT offices have granted permission. Use of recycled asphalt shingles in road construction is said to increase asphalt stiffness and decrease cracking and rutting, resulting in longer-lasting roads. According to the National Asphalt Pavement Association, nearly 950,000 tons of recycled asphalt shingles were used in asphalt pavement mixtures during 2017, which was a 32.1 percent decrease from the previous year. The decrease highlights the need for more asphalt shingle recycling facilities. Sometimes it can be hard for contractors to find a company that recycles asphalt shingles especially in rural areas.

Here At Robert Evans Jr. Contracting Inc. we recycle all of our ashpalt shingles tear-offs and scraps at Conigliaro Industry in Framingham Mass. to help stay environmentally friendly.

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Chimney Flashing

Posted by Robert Evans on Oct 13, 2014 2:59:00 PM

Chimney flashing

Chimney Flashing is a vital part of your roof. Robert Evans Jr. Contracting Inc. gets more calls about leaks around chimneys than about any other problem. And more often than not, the culprit is the flashing, the metal that keeps the intersection between the chimney and roof watertight.

Proper flashing around chimney includeds 2 layers. The first is called step flashing: L-shaped aluminum are woven into the shingle courses and lapped up the side of the chimney. Next comes the counterflashing: A second layer of metal usaully consisting of either Lead or Copper. {Most commonly used is Lead} It is embedded in the chimney mortar joints and folded down to cover the top of the step flashing

The corners are especially vulnerable. We usaully cut and bend the lead around the corner. Even with a good quality installation, this leaves one small spot that should be sealed with a high-quality Caulking such as Geocel.

The type of metal used for flashing depends on where you live. Aluminum and galvanized steel are sometimes used. Copper is the longest lived, but because its so expensive, we see it only on higher end jobs. Another advantage to copper is that the corners can be soldered for a watertight connection.

When a chimney is located at the bottom of a roof slope, a cricket should always be installed, a small diversion roof that prevents water from pooling and ponding behind chimney and eventually leading to seeping through roof into your house.

Schedule your FREE Roofing Assessment Today!

Because chimneys are such a potential trouble spot, inspect them once a year or two for loose or missing flashing and cracks in the masonry, or call on Robert Evans Jr. Contracting at 508-877-3500 and have one of our professionals do the inspection for you.  We also recommend that our customers waterproof their brick chimneys every few years with a brick sealer that can be applied with a garden sprayer. This is a great way to keep water from seeping into the brick.

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Roof Pipe flange replacement

Posted by Robert Evans on Sep 10, 2014 1:27:00 PM

Old worn pipe flange

Roof Pipe flange

This Homeowner in Natick Ma. noticed her ceiling inside one of her closets had a wet water stain. She called Robert Evans Jr. Contracting to come look at the situation. After a quick inspection to the roof area above the leak inside the house, we noticed the rubber gasket around the top of a pipe flange was worn away causing it too allow water inside the house. We removed the old worn pipe flange and installed a new 3" inch pipe flange. Sometimes the pipe flanges dont last aslong as the life of a roof and needs to be replaced. Have your roof inspected today to avoid such problems.

Schedule your FREE Roofing Assessment Today!

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