Robert Evans' Jr Blog

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 roofs

Posted by Robert Evans on Mar 5, 2014 9:02:00 PM

This winter has been very hard on flat roofs with the snow loads and persistent cold. Flat roofs are not maintenance free if the roof is eight years or old it might be time for an inspection, especially if you had leaks. Just because you had a leak doesn't mean the roof needs to be replaced, however waiting is the worst thing you can do. Depending on what type of insulation is used and if it is just one layer or two it could leak for months before showing signs of leakage. Many times the life of a flat roof can be extended with repairing of seams and penetrations. For a cost the faction of a roof replacement striping out seams and penetrations will add years to the life of a roof. In many cases we have offered warrantys to the building owners after doing such maintenance.

Tags: roofing metrowest, Commercial roof, EPDM, commerical skylites, commercial roof leaks, roof Framingham, roof natick, standing water, Firestone roofing, firestone roof, firestone contractor, firestone rubber roof

Rubber roof with drain

Posted by Robert Evans on Nov 1, 2013 12:20:00 PM

photo (14) resized 600Robert Evans Jr. Contracting installed Firestone rubber over pitched ISO deck { to prevent standing water } fully adhered With a 3 " inch hub drain in middle. Schedule your FREE Roofing Assessment Today!This roofing method is the best option for optimal roof life and preventive of any water issues on flat roofs.

Robertevansjrcontracting.com

photo (13)

Tags: Commercial roof, EPDM, rubber roof, roof natick, roof installation, standing water, Firestone roofing, firestone roof, firestone contractor, firestone rubber roof, drainage

Copper Roof

Posted by Robert Evans on Apr 5, 2013 12:20:00 PM

photoMA30890658 0002 resized 600photoMA30890660 0001 resized 600Example of a poorly installed flat seam copper roof. The roof was installed only a year ago on a newly constructed house, the roof had no pitch, but if properly install the copper still should not have leaked. The joints on the flat seam copper were not sweat properly, which allowed standing water to penetrate. We came in and removed the copper and installed a pitch with tapered ISO and fastened ½ inch plywood over. High temp ice and water is than placed on plywood. New 16 oz flat seam copper roof is than reinstalled.


Tags: CDX plywood, ice and water barrier, copper roof, standing water, metal roofing

Roof Drain

Posted by Robert Evans on Sep 27, 2012 8:45:00 AM

A pre existing Firestone roof, inNewtonwith a standing water problem needed to be addressed with some new drains. The roof had to layers on it, the first layer being a PVC roof with one inch fiber board, the second being fully adhered EPDM with one inch ISO.

An 8 x 8 by section of the existing roof was cut out and removed. 4x4 pitched ISO sheets (pitch at 1/8 per foot) were mechanically fastened to roof deck, with a four inch roof drain installed in the middle. New piece of EPDM glued to the pitch ISO and tied in with the exist roof. photo resized 600photo resized 600

Tags: Commercial roof, Roof Drain, roofs, commercial roof leaks, rubber roof, roof leaks, standing water, Firestone roofing, firestone roof, firestone contractor, firestone rubber roof, drainage

Roof Drain

Posted by Robert Evans on Mar 9, 2012 9:41:00 AM

Roof Drain Pics resized 600describe the imagedescribe the imageThe owner of this 8 yr. old rubber roof on a commercial property in Braintree MA. called on Robert Evans Jr Contracting for there expertise advise on his standing water issue. We recommended Installing a 4"inch PVC roof drain to extract any standing water out the sidewall of building. This will elimanate any pooling of water on rubber roof thus avoiding any condensation,and structural issues and increasing the longetivity of the Roof.

Tags: Roof Drain, rubber roof, standing water, drainage