TPE Collars are designed to fit outside drain pipes and foul air pipes to ensure a complete waterproof seal on the roof deck

TPE Collars

Collars are fitted to pipework which emerges from the top of the concrete deck. These sorts of pipes include bad odour vents and stand pipes. It is critical that these pipes are completely waterproofed as they emerge from the deck as any water ingress will flow directly into an interior section of the building, such as a bathroom.

TPE CollarsCollars will fit around the outside of an HDPE pipe (as opposed to the connectors and outlets which slot into the inside of a standard water pipe) and are secured using a jubilee clip or similar. They are again manufactured with a slightly conical shape, so that they are easier to fit, and also help direct water outwards away from the pipe and hole.

It is essential that the correct size of collar is chosen, as it needs to fit around the outer diameter of the HDPE pipe (which may be measured in Imperial measurements) but it should not be so large that gaps exist between the pip and collar, as this may cause movement.

The idea is that they completely surround the pipe.

TPE Collars

The deck should be waterproofed around the pipe as it stands out from the deck, with a first coat or “patch”; and the collar is then fitted over the top whilst the first layer / coat is still tacky.

The membrane will ooze through the holes in the perforated flange. The second coat / layer of waterproofing is installed, with the membrane bonding to itself (in the same way as described for drainage connectors), so that the membrane is bonded under and over the collar, ensuring a complete seal.

See the CAD images here

The jubilee clip is fixed around the collar at the top end to secure the whole area.

Measurements:

TPE CollarsH is the height of the collar

D1 is the outer diameter of the flange or surrounding ring

D2 is the inner diameter of the collar at the bottom

D3 is the inner diameter of the pipe at the top which needs to be larger than the outer diameter of the HDPE drainpipe

 

Wallbarn code

Category

D1

D2

D3

H

030-380-060-030

30mm

154

32

30

60

030-380-060-040

40mm

154

42

40

60

030-380-060-060

60mm

194

62

60

60

030-380-060-080

80mm

194

82

80

60

030-380-090-100

100mm

234

102

100

90

030-380-090-120

120mm

234

122

120

90

030-380-090-140

140mm

274

142

140

90

030-380-090-160

160mm

274

162

160

90

 

Installers will also need to buy Jubilee clips for all collars found in our Accessories section