Houstosic Valley Roof

Ice barrier underlayment installed in roof valley.

Houstosic valley roof. I mark the shingle where the valley center crosses the top edge and i mark the roof at the top outside corner of the shingle. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. Cut each side at the upper end of the valley to conform with the corresponding slopes of the roof.

The top joinery of both valleys when they meet on the same plane of roof is shown here. Using clips permits movement in the valley as temperatures change. Roofing material manufactures or roofing associations may have recommended installation guidelines for their products or for various. A closed valley is where the tiles or shingles are butted up against each other in the center of the valley.

If you begin with accurate as built measurements and use a construction calculator to do the math you can cut all of the rafters for most roofs on the ground in just one shot. Iko recommends that you install architectural shingles with the open valley method for the best roof performance. Use roof valley cleats at intervals of 24 o c. Entire width of new metal flashing properly extends over fascia at bottom of roof.

The three methods to shingle a roof valley. Attach the valley in place with 1 1 4 inch roofing nails and a shingle hatchet or hammer. The following photos illustrate removal and replacement of a closed cut valley with new open metal valley shingles being removed in closed cut valley. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck.

But it doesn t have to be. To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof. This recommendation includes iko s premium shingles. This roof valley is a perfect example.

Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. Framing a complex roof is one of the trickiest parts of home building. An open valley has a gap usually about 6 inches between the tile or shingles at the valley area.