Friday, April 13, 2012

Solar Cell Roofing

 

Solar cell roofing made from solar shingles or solar panels is being increasingly incorporated into the construction of new residential and commercial buildings. In many areas, people are choosing to replace their conventional roof with a solar roof when it is time for maintenance. And most of these people would tell you that the long-term value, or short-term increase is resale interest, made it worthwhile.

A solar cell roof is called "building integrated", also known by the more complete name "building integrated photovoltaic" (BIPV). BIPV suggests that you would have needed that part of the structure built anyway, and you've chosen to use material that will also serve the purpose of generating power through solar energy. The first advantage of solar cell shingles or panels on the roof is obvious: some of the initial cost is paid by lowering the overall material and labor costs involved in the construction. The second advantage is that the BIPV does not stand out - it is a normal and expected part of the design and structure of the building. These two advantages often make bipv solar roofing the clear choice over rooftop wind turbines, raised solar panels, and backyard windmills which both stand out and cost a lot more to build and install.

In some parts of the world, often due to government subsidies, many new houses are built with solar roofs. Until recently, this was not the case in the U.S., UK, and much of Europe because the cost remained prohibitive. However, with the invention of what is called "thin film solar technology", solar roofing tiles, panels and shingles have become easier to fabricate and work with and are much more aesthetically pleasing. This technology is best for pitched roofs where shingles or small tiles are the norm. Large flat roofs, such as the tops of many commercial buildings, can have one giant layer of solar film, or large integrated panels.

Thursday, April 5, 2012

Do you have a leak?

The Field of Shingles

If your roof is older, it is possible that the leak is within the roof field. This means the expanse of shingles, slate, shakes, whatever. If your roof is asphalt, then you can walk around with ease. Other materials such as slate, concrete tile or clay tile may not be so forgiving. You can crack roofing if you walk on it, so be careful. With regular shingles, look at the tops of the vertical knockouts. Look for missing colored granules. Look for cracks. Possibly a nail has backed itself out of the roof sheathing. Simply take your time and hunt.

Valleys

A valley is a line where two roof planes intersect. Here we use a metal flashing in the valleys. Some areas use rolled roofing. Other places simply lace the shingles together. Valleys can be big problems if you do not trim the shingles correctly. When you trim a shingle for a valley you end up with a chisel point on the end of the shingle. If a second cut is not made to make this point like an arrow point, then water can travel along the top of the shingle and find its way inside your house. The shingle wrapper tells you how to make this simple second cut.

Head Wall Flashings

Some roofs stop at a vertical wall. A metal flashing must be in place to direct water streaming down the wall away from the stopping point of the shingles. This flashing may be behind wood siding or in front of a brick wall. The flashing should extend over the shingles at least three inches. If the wall is brick or other masonry, the flashing must bend and extend one inch into a mortar joint. Tar, caulk or roofing cement should never be used in conjunction with these materials. If you see them, it is a sign that someone tried to patch a leak!

A Real Advantage Construction is your #1 source for repairing roof leaks on your home! The professional staff will work hard to find at fix the leaks they find! Choose A Real Advantage Constrution for all your roof leak repairing needs in New York, the Bronx, Queens, and Brooklyn!