Flat Roof Membrane Detail

Flat roofs are practical affordable and are celebrating an architectural comeback.

Flat roof membrane detail. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. On a flat roof generally speaking you want to avoid any types of seams if at all possible. Banding is typically used to seal soil vent pipes on single ply roofs such as fdt rhepanol pib and involves wrapping an unreinforced membrane around the pipe to a minimum height of 150mm an approved sealant is then applied to the top of the membrane. Four plies denotes a four layer flat roof membrane system.

But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. A flat roof usually consists of the following. Flat roof waterproofing with resitrix epdm roofing membranes reliable roof waterproofing for all flat roof systems. Termination at rtu with welded lap.

The major difference between the warm flat roof and the cold flat roof has to do with the air flow between the roofing timbers known as joists that help to hold up the roof. Grace roof detail membrane is the only product available today designed specifically for waterproofing critical roof detail areas. Membrane roofs are attached in a variety of ways. Bur systems are redundant meaning if one layer breaks down multiple remaining layers provide immediate protection.

This could mean flat roofs may not raise the same red flags they used to. Side lap detail mechanically attached. The number of plies on a roof implies the number of layers i e. Your main goal when covering a flat roof is to create a barrier that will be impenetrable to water.

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. What typical detailing methods are used to seal flat roof penetrations. But the flat roof is one of a building s most highly loaded components and waterproofing it is particularly challenging. Epdm and neoprene roof seams are fastened by adhesive and pvc roof seams are heat or solvent welded.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Side lap detail fully adhered system. They can be partially loose laid and held down with river rock ballast requires roof structure to support the weight or fully adhered to the roof deck. Roof membrane layout adhered.

Flat roof construction for residential. Typical methods include banding pitch pockets and cover flashings. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. Vertical wall edge termination.

In the warm flat roof construction there is insulation packed into every possible space where air can flow. Termination at rtu with counter flashing. The biggest threat is of course going to be water which will find any access though any hole or inadequately sealed seams in a roofing membrane.