Frame Roof Valleys Using Battens

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.

Frame roof valleys using battens.

The spacing of the battens depend on the type of roofing material and are applied horizontally. Metal roof battens will not warp or rot nor are they subject to insect attack. The battens are made in approximately 3 0m lengths to allow for cladding creep along the width of the roof. Place the flashing on the upper portion or the upper flange of the.

To minimise cutting lay the battens in one direction starting from one end of the roof. Fasten the roof sheets to the batten as per the appropriate stratco roofing specifications. The next batten is to be placed with at least one mount flange overlap figure 3 making sure the next batten sits down flat in the existing roof cladding valleys. The plywood covers the entire roof and is solidly attached to the rafters providing a sturdy base for both insulation and metal roofing panels.

Caution battens or purlins as they are sometimes called must be fastened to the roof joist or trusses with the proper length and number of fasteners to prevent pullout. If the batten does not sit flat in the valley cut the battens into shorter lengths to allow for the excess creep. 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. Fix through the ridge flashing into the roofing batten as shown below using the appropriate cladding screws.

Battens should be nailed. Step 2 install the valley battens. Metal roof battens offer extraordinary strength to weight values and are lighter than timber battens. A batten is a roofing component made of a thin layer of metal plastic or wood and is used as a fixing point for roof tiles and roofing sheets.

Access the roof using an extension ladder. Hip and valley joints. Battens are not always used in a roofing system. While decking is not required for a metal roof and is often not used for shops barns or other outbuildings if a metal roof is being put onto a home or a garage the use of decking is common.

Shingles and tiles are affixed using the battens as spacing. Roofing battens or battening also called roofing lath are used to provide the fixing point for roofing materials such as shingles or tiles. Battens must be installed to support the entire width and length of ridge eave hip valley and gable end trims. Metal roof battens may be used with steel or tile cladding.

Batten joints should be staggered over the roof so that three consecutive battens nz 2 consecutive battens are not jointed on the same rafter. For this example a section of roof is 20 feet wide. All joints in battens must meet in the centre of trusses or rafters and not be joined over girder trusses.