Pipe Penetrations Through Monarplan Single Ply Roofing Membranes

Pipe Penetrations Through Single Ply Membranes

  • Use Monarplan pre-fabricated pipe boots where possible.
  • Remove any existing lead flashing, old paint, and rust where applicable and clean surface to receive membrane flashing.
  • Cut pre-fabricated pipe boot to the appropriate pipe diameter and slide into position.
  • Install mastic sealant between the Monarplan Pipe Boot and the pipe and secure with a stainless steel clamping ring (eg. jubilee clip).
  • Where pre-fabricated pipe boots are not practical, wrap the pipe with unreinforced Monarplan D in accordance with the appropriate detail.




1. Pipe ø 50-125mm.
2. Stainless steel clamping ring.
3. Substrate.
4. Monarplan single ply membrane.
5. Monarplan pre-moulded pipe flashing

6. Insulation.
7. Washer & fastener.
8. Hot air weld min. 40mm.
9. Mastic sealant.
10. Vapour control layer.


Hot Pipes

Pipe penetrations that exceed 50°C require an oversize insulated sleeve to flash to.

Video demonstrating installation of Monarplan Pipe Flashings

Associated Monarplan Products


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