Some of our telecommunication staff are currently on yearly training and voice communication is limited to prescheduled appointments. Service and other project related requests can be accessed through email without delays. 7x7 Roofing is a local San Francisco contractor, we mainly work on Victorian, Edwardian and Modern Construction homes, we specialize in re-roofing historical buildings and in preservation of original San Francisco benchmarks. We love San Francisco and we are the most efficient working in San Francisco.
Asphalt shingles are among the most common roofing materials that are installed today. It's because asphalt has proven itself very effective against water, snow and other destructive weathering elements. Despite its resilience against the weather, it remains flexible. The asphalt shingles used by 77 Roofing are made of high quality materials reinforced by fiberglass that will not dry out or become brittle during its lifetime. 77 Roofing mostly installs white or commercial white asphalt shingle roofs, we mainly install 40 Year, Type A premium shingles by Certainteed or GAF brands.
Copper offers the character and durability that no other metal roof can match. Look of copper can complement any style of building, from classic to traditional and to the modern. Its glow and beauty of this material make it a preferred fit for many architects worth their salt. The use of copper roofs is based upon traditional practices proven over centuries. There are numerous examples of copper roofs which have been in place one or more centuries especially in Chinese and Japanese architecture.
Synthetic Rubber (Thermoset) - This type of membrane roof is made of large, flat pieces of synthetic rubber or similar chemical family materials. These pieces are welded together at the seams to form one continuous membrane layer over your roofing deck. The finished roof's thickness is usually between 30 and 60 mils (thousandths of an inch) (0.75 mm to 1.50 mm). Other types of related materials are CSPE, CR, and ECR. Thermoplastic Membrane - This is also similar to synthetic rubber, but the seams do not form a continuous membrane.
If you already have a solar array system on your roof and need a new roofing system installed, 77 Roofing can offer removal of your panels, disconnection of your photo voltaic system from the grid, disconnection of your inverter, mapping of your solar panel system, replacement of your roof with proper sealing of all solar system penetrations and re-installation of the solar system in present configuration. 77 Roofing also services your solar system to optimize future performance. If you already have a solar array system and your roof is in need of coating, 7x7 Roofing can seal your existing roofing system using Polyurethane based adhesive where needed, coat your roofing system with two part epoxy primer and siliconized coating and clean and service your solar panels for maximum performance.
Love the light your old skylights let in - but not the rain, summer heat, and harmful UV rays? Putting on a new roof is, of course, a great time to replace older leaking and inefficient skylights. We recommend installation of double pane skylights at the same time when you are installing a new roof. If your existing skylights are a standard size then installation of new skylights is free at the time when you are replacing your roof since we have to take out your old ones anyway to properly waterproof the curb.
Sprayed polyurethane foam roofing is one of the more available layer-over or repair systems available in today's marketplace. It can be installed over wood, concrete, steel, and most other existing roof systems which will save you on the expense of roof removal and landfill fees as often layers of existing roofing and damaged roofing deck are not removed but sprayed over. These systems are custom designed for your buildings by geographical location and climatic conditions. Roof protrusions can be foamed at their bases, eliminating entry points into the roof.
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