Most roofs in Georgia are made of asphalt shingles or wood shake. The building code requires that the roofing materials be compatible with the building and the other materials used to construct it. The materials must have a manufacturer's identification, an accreditation label, and be recorded on the bill of lading if purchased in bulk.
The codes require roofs in Georgia to have a 2% or one-quarter inch per 2 inches slope to protect the structure from environmental elements. According to the IRC, roof decks must use approved materials for covering. Coverings must use the approved fasteners, and parapet walls require a non-combustible coping to be installed. The IRC has also established that the thickness of the coping material must be equivalent to that of the parapet wall.
Roof ventilation is a standard prerequisite for residential and commercial buildings in Georgia. The dimensions of the roof vent must be between one-sixteenth and one-quarter of an inch. Those that exceed these dimensions should have a wire cloth screen that is corrosion-resistant to shield from elements such as snow and rain.
The code requires drip edge to be installed around the perimeter of the roof, also that sheet metal be used for residential roof flashing and counterflashing to ensure that moisture doesn’t penetrate through walls and other openings. The minimum width for valley flashing is 15 inches. SELECT ROOFING SERVICES LLC will help to protect the permeable sections of your roof by installing the appropriate flashing.
While re-roofing can be an option, the re-roofing codes in Georgia forbid it under certain conditions. If the old roof is waterlogged or has more than one layer of roofing material, then it should be removed. You cannot reroof on a dilapidated roof. For all major roofing repairs, especially re-roofing projects, be sure to hire a professional roofing contractor.
Roofs are one of the most expensive replaceable elements on a dwelling, but since a roof is not an easy access part of a house for a homeowner, often, bad roofers will cheat on the installation process providing poor workmanship such as improperly nailing the shingle, reusing old flashing systems, nailing to close to valleys and skylights, adding excessive amounts of roof tar or caulking in places that is not required, improperly nailing the roof vents and accessories, using cheap materials.
The roof covering protects the decking
and is what keeps rain from getting into the
attic. in residential dwellings, is usually composed
of 4 elements, the underlayment,
asphalt shingles, flashing system, and accessories
for attic, HVAC, and plumbing ventilation.
However, roofs are not exempt from maintenance,
improper installation and deterioration are the most
common causes of roof leaks. Roofs and accessories that
compose them are exposed to extreme weather all year
long. Regular maintenance is required to maintain
longevity and the beauty of the roof.
A Chimney Chase Cap often known as a Chimney Cap is a custom fabricated sheet metal or aluminum panel that covers the chimney chase top opening, often those panels fail due to improper design, and deterioration. leaks coming from chimney chase caps remain invisible for several years until corner boards start to show signs of moisture. in other occasions leaks caused by these caps are confused with flashing leaks.
Gutters send rainwater away from the dwelling avoiding flood for excessive rain around the building. Excessive weight from debris
can make the gutter come loose, from the fascia and in some cases even pull the fascia apart from the rafters that are supporting it, regular maintenance and cleaning are recommended at least twice a year to prevent downspout cloggages and ensure that water is flowing correctly.
Not only roofers have business with roofs. Some HVAC and Plumbing contractors also mess with roofs when they install their exhaust and ventilation pipes. but the lack of knowledge about the materials and the roofing system, leads their installation to poor workmanship and potential future roof leaks.
A valley is where 2 different slopes of a roof meet. The 2 slopes form a V angle where water runs off. Due to the high concentrations of water on these particular areas. valleys are required to have extra protection, usually a valley flashing, or a valley liner such as ice and water shield is installed as underlayment to add that extra protection, however valleys are common to leak due that roofers install fasteners too close to the center. making holes on that liner/flashing and with the time those nails got rot and allow moisture to get in the attic.
Low slope roofs are those with and inclination below 2 inches vertical by 12 inches horizontal, these roofs are commonly found on porches and sunrooms, sometimes are also part of the main dwelling. Roofs like the one found on the photo are often incorrectly covered with shingles which make them to leak due to the poor ability of water to drain on such low slopes. A Modified Bitumen Membrane, or a Single Ply Membrane is required by code on this type of roofs, however some home remodelers with low knowledge about the industry codes and the manufacturers specifications still use shingles on these areas of the roof.
It is required by code that a chimney wider than 30 inches perpendicular to the roof slope shall always have a cricket or saddle built-in, so it can properly divert the rainwater and debris to the sides of the chimney, this is very important so not excessive amounts of derbris and moisture accumulate on the back of the chimney. it is the reasonability of the contractor to educate his customers about this topic.