"Roof Installation: How To Shingle a Valley (HD)" by RoofRepair101

valleys are one of the areas where true professionals take their time in doing it right the average Valley gets loaded up with a substantial amount of water and can get backed up with ice and snow in colder areas there are three methods to install in valleys including the open woven and close cut methods first we'll look at the woven Valley the woven Valley should only be used with three tab shingles or slate line shingles this technique should not be used with GF laminated shingles because of their thickness so we'll install a woven Valley with three tab shingles remember valleys are a prime leak area so it's important to be extra careful that's why we require the use of weather watch or storm guard self-adhering leak barriers in all valleys to qualify for the Golden Pledge limited warranty the woven Valley is a very waterproof Valley because it leaves no exposed openings and because the two sides of the valley are usually Blended together seamlessly the first step is to install Weather Watch or storm guard leak barriers down the valley then lay deck armor tiger paaw or shingle made deck protectors on the deck even if water does get blown in under the shingles the leak barriers and deck protectors will provide an extra layer of protection the woven Valley shingles are applied simultaneously on both sides at the intersecting roof surfaces bring the first course along the eve up to and over the valley with the last shingle extending a minimum of 12 in onto the intersecting roof now bring the first course on the intersecting roof along the E and extend it 12 in across the valley and over the previously applied shingles press the shingles into the valley and nail them in place make sure that you press the shingles far enough into the valley to prevent bridging use normal nailing methods except that no nail should be within 6 in of the center line of the valley two Nails should be placed at the end of each single crossing the valley continue by applying additional courses of shingles in the manner just described the closed cut Valley is popular in many parts of the country and shows the aesthetic appeal available with asphalt roofing shingles now how do you create this Valley with laminate shingles simple first lay weather watch or storm guard leak barriers down the valley bring the first course of shingles along the eve and across the valley onto the roof plane that has the lower lower slope or lesser height starting on this side allows the largest volume of water to come over the cut and not into the cut the first course is the only course that is woven with the intersecting roof surfaces now apply shingles assuring that you extend at least 12 in past the intersecting roof don't make a joint in the valley if a shingle falls short insert a one or two tab section or 12 to8 18 in of laminated shingle in the row so that a full shingle extends over the valley press the shingles tightly into the valley make sure that the shingles lay flat enough so that no bridging occurs secure the shingles at the valley using normal nailing methods but remember make sure there are no Nails within 6 in of the Valley Line this will ensure there is a 12in minimum nail-free Zone in the center of the valley to ensure proper fastening two Nails should be placed at the end of each shingle that crosses the valley continue to apply succeeding courses in the same manner next apply shingles to the UN shingled side make sure that the shingles extend past the center line of the valley so that they can be trimmed properly in The Next Step trim the shingles as you install them using a chalk line to ensure a neat installation crop 1 in on a 45° angle from the upper corner of each end shingle as you install this will direct any water back into the valley finally embed each end shingle in a strip of asphalt plastic roofing cement 3 in wide the open Valley is next Begin by applying corrosion resistant metal over the weather watch or storm guard in in the valley do not nail the metal to the roof metal needs to have space to move use either metal Clips or use the roofing nail head and clip the metal in place by placing the nail head at the Metal's edges snap chalk lines on either side of the Valley Center Line with the ends 6 in apart at the Ridge and widening an eighth of an inch per foot as the lines approach the E cement flashing at the edge es with asphalt adhesive then install the shingles trim the shingles at the valley and make sure to crop the upper Corners to help direct water back into the valley during heavy rainfall finish by applying asphalt cement under the shingles at the valley it is important to note close cut California valleys can be used with GAF Timberline series laminated shingles on slopes great than 4 and 12 however California valleys are not acceptable on Golden Pledge installations for more details on Shingle applications and specialized valleys like the California Valley visit gf.com

Channel: ROOF REPAIR

Views: 730,199

Keywords: roofing, roof installation, roof valley, how to roof valley, roofing shingles, installing shingles in valley, gaf roofing, roofrepair101tv, Roof Shingle (Consumer Product), Roof (Literature Subject), Valley, Repair

Id: jqWQ9jcLoKM

Length: 6min 16sec (376 seconds)

Published: Thu May 30 2013