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. 

Tags: roofing metrowest, Commercial roof, www.certainteed.com, www.gaf.com, roof newton, roofs, CDX plywood, Certainteed Lifetime roof, Architectural shingles, Certainteed Landmark, ice and water barrier, roof Framingham, Gaf, gaf timberline shingles, cobra ridge vent, roof metrowest, roof natick, roof installation, roof leaks, wayland ma., roof leak

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.

Tags: roofing metrowest, www.certainteed.com, www.gaf.com, roof warranty, Architectural shingles, roof Framingham, attic ventilation, gaf timberline shingles, roof metrowest, roof natick, Re-sheathed, Roof color, Four seasons, standing water, wayland ma., gambrel Style roof, roof leak

Flat Rubber roof in Massachusetts

Posted by Robert Evans on Jun 25, 2014 12:10:00 PM

describe the image

This Flat Rubber roof in Massachusetts was completed a few years ago by Robert Evans Jr Contracting Inc.

Flat Rubber roofs can last up to 40 years if well maintained by your roofing contractor. All seams, corners, penetrations in roof, and edge flashing should be inspected annually for wear and tear. Any ponding water on your flat roof should be avoided also to keep your roof at peak performance.

Robert Evans Jr. Contracting can take care of all your roofing needs including Flat roofs, Sloped asphalt shingled roofs, siding, windows, and General Contracting.Click me

Tags: roofing metrowest, www.certainteed.com, roof newton, roofs, clapboard siding, CDX plywood, carpenter, certainteed roof, Certainteed Lifetime roof, Architectural shingles, ice and water barrier, roof Framingham, rubber roof, shed dormer, attic ventilation, Gaf, gaf timberline shingles, cobra ridge vent, siding metrowest, roof metrowest, roof natick, roof installation, roof leaks, Milford roof, solar metrowest, Four seasons, harvey replacement windows, Floor guys, Firestone roofing, firestone contractor