Overlap For Roof Membrane

A flat roof that had been over coated with a liquid based system which itself is breaking down a bonded overlay would not be suitable although with some preparatory works a mechanically fastened overlay system might be an option.

Overlap for roof membrane.

Pull back some of the release sheet from the upper half of the membrane. Metal roofs though less appealing than shingle or tile is a more fire resistant and heat reflecting roofing option. Video of the day. Try to ensure they are above the line at which the second length of membrane will overlap.

Lay the membrane back down and tack the top corner. The easy installation involves placing metal panels on your roof but you ll need to be mindful of metal roof overlap. Roofing felt is required to overlap 2 inches over the lower felt course. All field sheets incorporate 6 control lines for overlap and fastener placement.

Finally a surfacing is applied to provide protection and an appealing aesthetic. Continue up the roof laying lengths of breather membrane. Check that this is the case adding temporary clout nails to the top of the membrane. Place the end of the sheet according to instructions to allow the correct overlap.

The final covering of tiles or slates will provide a secure fixing. Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest. Nail along the top edge of the membrane to hold it in place while the adhesive sets up. Heat welded seams provide superior strength.

The surface layer can be a mineral cap sheet fused to the layers below or just a final layer of asphalt mopped across the entire roof. More overlap is used at roof edges and transitions while less overlap is required across the main roof area. Start at the low point of the roof and position a perimeter 39 or 991mm roll of tpo roof membrane square with the roof edge. We suggest a dip of approximately 10 15mm.

Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price. Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system. Based on the grace ice and water shield technology grace roof detail membrane is a flexible product that conforms tightly to common roof details such as skylights chimneys and dormer walls. Align the roll for the correct overlap and continue removing the upper half of the release sheet.

Roll out the membrane to the end of the roof run. If there is no ridge ventilation the breather membrane should go over the ridge and overlap each side of the ridge line by the required overlap. If your panels aren t layered properly water damage can occur.