Flat Roof Parapet Wall Metal Top

A common area which needs to be designed and constructed properly is the joint between the flat roof and any parapet wall.

Flat roof parapet wall metal top.

A continuous cleat secures the front and the back is secured by a screw. Unless it is detailed to allow for movement any slight deflection of the roof could cause a break in the waterproofing membrane at the roof parapet wall junction. A continuous fully adhered air control layer supported by gypsum sheathing on the top of a metal deck. What are the protective solutions for flat roofs.

The gypsum sheathing is screwed to the metal deck. Its job is to prevent water from penetrating into the parapet wall. Rigid thermal insulation on the top of this air control layer in two layers at least with the joints off set horizontally and vertically. A parapet wall is a low or dwarf wall built along the edge of the roof terrace walkway balcony etc.

This insulation should be screwed down to the metal deck. Modern flat roofs with parapet walls. Parapet wall cap custom wall flashing metal products custom made to order this unique type of cap is designed to cover the top of parapet walls. The system rests flat on top of the parapet.

Although the construction of the actual roof component of a parapet roof is almost identical to a typical pitched roof it is wise to use a greater minimum roof pitch than is recommended by the roof sheet manufacturer to ensure that no back flow of water occurs at the junction with the parapet wall. The main roof beyond has a coping cap flashing piece over the parapet wall. The cantilevered roof overhangs have a gravel stop metal flashing piece at the roof edge concealing the slope. The detailing at design stage is very important.

Different types of parapet walls and their uses are discussed below. Height of roofing at wall. Flat roofs of this type are usually finished in steel roof sheet and fall towards a special type of gutter called a box gutter. Top of parapet below cap to be sealed with fluid applied flashing.

The coping cap protects the top of the external walls and can be made of anything from brick to concrete to metal. Flat coping offers a complete and attractive finish to any parapet wall. Many buildings have flat roofs in certain areas specifically for air condoning units and etc. Do not lap tpo over top of parapet unless required by unique construction conditions.

This is a surecoat systems how to roof.