How To Shape Purlin For Corrugated Roof

Flashing is metal trim that fits over joints where two sections of roof meet.

How to shape purlin for corrugated roof.

Overlap roof panels one corrugation away from prevailing wind and nail to rafters starting from one end. Corrugated sheet roofing. With galvanized j or l hook. In corrugated sheets the corrugations shall be uniform in depth and pitch and parallel with the side.

Corrugations should run in a straight line between the highest and lowest points and at a right angle to the purlins the intermediate supports. 0 6 mm or 0 8 mm thick as given in the description of the item and shall be appropriately bent in shape. However if your metal roof has another supporting method the exact spacing is not. Cut to fit pitch of roof and around vent.

Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses. The g s sheets shall be fixed to the purlins or other roof members such as hip or valley rafters etc. How to install purlins. Setting corrugated metal roof purlin spacing in a proper distance is an important part of the entire process.

Bend the flashing into a v shape to fit over the top roof ridge and the corners where the panels meet. The distance lengths are often based on the roofing panels size. The overlaps ends and sides depends upon the sloop of the roof. Corrugated sheet roofing material is widely available and easy to use.

Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart. To install corrugated roofing start by cutting your panels to length with an angle grinder. The flashing should overlap the edge of the roof by one inch to help direct water. Purlins are 2 by 4 feet and are installed much like metal roofing.

Adjust door construction to desired size. Install vent as close to roof peak as possible. Metal roof purlins are installed horizontally under metal roofs. Apply front and back panels similarly to side walls.

They give added support to the roof and also provide a nailing surface for the end panels and drip edge. When positioned roof purlins should be spaced no further than 1 2 metres apart when using sheeting with a thickness of 0 7mm and 1 metre when using 0 5mm sheeting. In order for the sheets to be easily fixed to the purlins as a rough guide they should be at least 50mm wide.