The cure for parapetitus is continuity of the control layers and letting things move when they have to move.
Parapet wall rubber roofing.
Height of roofing at wall.
Install the epdm rubber as normal for a parapet wall finish.
Parapets can also hide unsightly roofing material or equipment that is placed on the roof such as vents.
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.
Installing new fully adhered epdm rubber system wall detail.
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.
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.
They can also improve the proportions of a building by increasing the apparent height.
A critical and often overlooked design detail is at the termination of a parapet coping at a wall.
Identify the outlet location and cut a cross into the rubber large enough to allow the outlet through.
Parapet walls can be constructed using different materials like reinforced cement concrete steel aluminium glass etc.
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.
Do not lap tpo over top of parapet unless required by unique construction conditions.
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.
Minimum of 12 to top of parapet.
In many bearing walls where roof framing members are set into beam pockets the parapet is a continuation of the masonry wall below.
Different types of parapet walls and their uses are discussed below.
Top of parapet below cap to be sealed with fluid applied flashing.
Xmm gap in diagram above one piece rubber roof fully adhered.