A pass-through roof tile is a special roof tile with a built-in opening or upstand that allows pipes, vents or flues to be routed through the roof slope. The pass-through tile creates a watertight connection between the tiled roof and the penetration.
Applications
A pass-through roof tile is used for:
- Soil and vent pipes — to vent off drain gases
- Boiler flues — often in combination with a concentric flue pipe
- Mechanical ventilation — exhaust air discharge
- Aerials and cables — for a neat, watertight passage
- Solar panels — to feed cabling through the roof
Types of pass-through tiles
Pass-through tiles are made in many versions:
- By tile profile — pantile, double Roman, plain tile, interlocking tile, etc.
- By diameter — 80, 100, 110, 125, 131, 150 mm
- Universal/adjustable — suited to a range of roof pitches
- With or without an upstand collar — the collar raises the outlet above the roof surface
Installation
When installing a pass-through tile, keep the following in mind:
- Align with the roof pitch — the tile (and its collar) must be set correctly to the slope
- Protect the deck — on a timber deck, a fire-resistant collar may be needed for hot flue applications
- Lead flashing — a lead apron under the tile gives extra weather protection
- Maintenance — inspect periodically for leaves and corrosion
Related terms
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