Parapet Wall Rubber Roofing

The most common mistake at this intersection is to allow the metal coping to but up to the wall without the application of termination metal.

Parapet wall rubber roofing.

A critical and often overlooked design detail is at the termination of a parapet coping at a wall. Apply water cut off mastic to the back of the angled flange and then push the outlet through the opening until it meets with the parapet wall and the roof surface. Install the epdm rubber as normal for a parapet wall finish. The perimeter of the roof assembly insulation is wrapped to prevent interstitial airflow from the parapet into the multilayered rigid insulation of the field of the roof.

Identify the outlet location and cut a cross into the rubber large enough to allow the outlet through. Xmm gap in diagram above one piece rubber roof fully adhered. In many bearing walls where roof framing members are set into beam pockets the parapet is a continuation of the masonry wall below. The omittance of the termination metal leaves an opening at the top of the coping and allows for moisture infiltration at the space between the parapet.

Do not lap tpo over top of parapet unless required by unique construction conditions. Top of parapet below cap to be sealed with fluid applied flashing. They can also improve the proportions of a building by increasing the apparent height. Parapets can also hide unsightly roofing material or equipment that is placed on the roof such as vents.

Installing new fully adhered epdm rubber system wall detail. Minimum of 12 to top of parapet. Parapet walls can be constructed using different materials like reinforced cement concrete steel aluminium glass etc. Height of roofing at wall.

When a roof is abutting a wall at the perimeter of the roof allow 2mm per meter for the distance that the roof protrudes from the wall for expansion purposes. In this case the capacity of the parapet depends on the bond strength condition of the masonry at the point where the roof framing members engage the wall. The cure for parapetitus is continuity of the control layers and letting things move when they have to move.