Different jurisdictions have different code regulations but generally speaking, Enviroshake® can be installed over one layer of existing asphalt shingles, provided the roof is structurally sound underneath. There is considerable cost savings since there would be no additional cost for removal and disposal of the shingles. There are considerable environmental benefits to this as well because the old shingles need not be put in a landfill. No. See similar questions...

The exact composition of Enviroshake® is a proprietary trade secret. It is what is commonly known as a composite material that contains plastics, fibers, and tire derived rubber. There are also components that protect it from UV degradation and provide the necessary colouring to replicate the look of cedar shakes. See similar questions...

Yes. Springhouse Shingles can be installed over your existing asphalt roof thereby eliminating expensive tear off and disposal fees. See similar questions...

It is possible, but we recommend removal of the existing shingles to ensure the shingles perform to the manufacturer's specifications and to keep your manufacturer's warranty intact. Installing new shingles over the existing can trap moisture from the old shingles and cause premature deterioration of the new shingles. See similar questions...

Yes. You can apply new shingles over existing shingles, but it depends on the condition of the roof and city ordinance. If the roof has one layer of shingles that are laying flat and the deck is in good condition, the existing shingles typically do not have to be removed. Check with local officials to make sure that building codes are being followed. See similar questions...

Enviroshake® is currently offered in only one colour. It starts out as a brownish grey colour and converts or “weathers” to a silver-grey colour that closely resembles a real cedar roof. See similar questions...

Enviroshake® is recommended for roofs with a pitch of 4/12 or greater. Please consult Technical Support at 1.866.423.3302 or info@enviroshake.com if your roof slope is less than 4/12. See similar questions...

Please call 1.866.423.3302 (toll free in Canada and US) or e-mail us at info@enviroshake.com for the location of a distributor or dealer near you. See similar questions...

We include installation guidelines with each order, but metalwork and roofing installation experience are a must to achieve the protection your home deserves. We suggest hiring an experienced roofing crew locally, or you can hire an expert Summit Roofing crew. See similar questions...

Yes, you can install just the SELinux modifications on an existing Linux system or you can install a Linux distribution that already includes SELinux support. SELinux consists of a SELinux-enabled Linux kernel, a core set of libraries and utilities, some modified userland packages, and a policy configuration. To install it on an existing Linux system that lacks SELinux support, you must have the ability to compile the software and also have other necessary system packages. See similar questions...

A number of factors come into play in making this decision. Older shingles tend to cup as they dry out and age. The new layer will follow the contour of the existing shingles which may cause your new roof to look bumpy or uneven. Also, the existing rows of shingles must have been run straight when installed. Again, the new layer will follow the old pattern and may lead to a visually unacceptable appearance. See similar questions...

Since metal weighs only 1/3 as much as shingles, you can often attach metal panels without tearing off your existing shingle roof. This eliminates the cost and problems of disposing of the old shingles. The best way to do this is to attach 1" x 4" or 2" x 4" furring strips at 24" o/c parallel to the eave and ridge. Check local codes to determine if tearing off shingles is required in your area. Request Fabral's Technical Bulletin #721 for additional information. See similar questions...

The 4 best months in the year, for installing asphalt shingles, are May, June, September and October. However, most roofing contractors consider the season, from mid-March to mid-December. During very hot and humid weather [July & August], we sometimes have to pull the crews away from sites, by noon hour. Otherwise, the conditions are not healthy and the new shingles may be damaged, as they get very soft. See similar questions...

A 2nd layer of shingles can be installed, if certain criteria are followed. The removal of the existing hip and ridge shingles, cutting-flush the eave and gable shingles, and installing an Eave Drip Edge are all required, to have a warranty from the manufacturer. By the time you do these things, and pay for the resulting labour - you might just as well do the project in a professional way. See similar questions...

In the United States, asphalt shingles are categorized as either organic-based or fiberglass-based. Organic-based asphalt shingles are manufactured with a base (also termed mat or substrate) made of various cellulose fibers, such as recycled waste paper and wood fibers. This organic base is then saturated with a specially formulated asphalt coating and surfaced with weather resistant mineral granules. See similar questions...

No. Shingles occurs only when the virus that caused chicken pox, which has stayed in the body for many years, becomes active. You cannot get shingles from someone else. You can only get it from the varicella zoster virus in your own body. See similar questions...

Shingles -- also called varicella-zoster -- is a painful skin disease caused by a reactivation of the chickenpox virus. It is distinctive because it affects only one side of the body. The early signs of shingles usually develop in three stages: severe pain or tingling, possibly itchy rash, and blisters that look like chickenpox. See similar questions...