How To Weld Pvc Roofing

The hot air welding of all seams and flashing is used on all pvc roof installations.

How to weld pvc roofing. Lift the overlapping membrane sheet and insert the blower nozzle between the overlap. 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. Immediately begin moving the machine along the lap to prevent scorching of the membrane. Though the primary color of a pvc roofing membrane is white it can come in a variety of colors and hues.

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. Position the automatic hot air welding machine with the pressure wheel approximately 3mm over the weld edge to ensure a sealed edge. Weld the 18 457 mm pieces together and then allow the membrane a few minutes to cool.

Pvc is relatively light and can be purchased in milages between 36 and 90 mils as mentioned before a mil is 0 001 of an inch. The welds are tested by pulling the weld apart by hand. Welding operation automatic welders. However the standard pvc roofing membrane is about 50 mils.

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.