How To Weld Pvc Roofing

Weld the 18 457 mm pieces together and then allow the membrane a few minutes to cool.

How to weld pvc roofing.

45 mils equal 0 045 inches. Welding operation automatic welders. This video shows the process of flat roof installation of an ib pvc flat roofing membrane and hot air welding the seams using leister hand welder and hand roller. Though the primary color of a pvc roofing membrane is white it can come in a variety of colors and hues.

Cut a 1 25 mm wide strip across the welded material. The hot air welding of all seams and flashing is used on all pvc roof installations. Pvc the material on either side of the weld has a dull finish or there is brown discolouration hand welding the welding rod is completely flattened or smeared extrusion welding when probing the material in the preheated zone ahead of the welder there is significantly more than 0 5mm of penetration. Position the automatic hot air welding machine with the pressure wheel approximately 3mm over the weld edge to ensure a sealed edge.

Good welds require a lot of force but it s the way the weld comes apart that s the key. Welding speed is about 2 5 3 feet. Immediately begin moving the machine along the lap to prevent scorching of the membrane. Lift the overlapping membrane sheet and insert the blower nozzle between the overlap.

The welds are tested by pulling the weld apart by hand.