Ventilation Tiles

• Working Procedure - Gemini/Minislate/V2
• Components - Gemini/Minislate/V2
• Working Procedure - Hardrow
• Construction Sequence - Hardrow
• Components - Hardrow
• Documents

1. Complete roofing to one course below the required position for the ventilation tile.

Decide the position of the Soil/Air Vent Tile. Cut an X in the underlay as illustrated and peel the flaps back. Position a felt weir above the hole. Cut a slot in the underlay the width of the felt weir and push the leading edge through. Slide the felt weir down until the upstand on the felt weir touches the top of the batten below.

Note: The slot needs to be in a position that leaves at least 25mm of the leading edge of the felt weir through the slot when it is pulled back to the lower batten.

2. Position the Lo-Vent Soil/Air Vent Tile over the hole making sure the flaps of the underlay are turned upwards.

3. Tile the remainder of the roof in the normal manner.

Note: Soil Vent Terminals should be positioned 1 metre vertically above the highest opening in the building.

Soil /Air Terminals should be positioned no closer than 600mm, in any direction, from each other.

4. The free vent area of the Lo-Vent Soil/Air Vent Tile is 7860mm² - and can be used for mechanical extraction. It may not be used for hot flue gases.

If the terminal is to be used for either Soil/Mechanical extraction, a 500mm long 110mm diameter flexipipe is provided to connect to either a soil stack or extract duct.

1. Complete roofing to one course below the required position for the ventilation tile. Which should be as central between the rafters as practical. Position the site cut slates and mark the position of the vent. Cut the underlay with an X to enable the spigot to protrude into the roofspace.

2. A Felt Weir is provided to give additional protection to the cut in the underlay. To fit, carefully cut a slot in the underlay above the upper batten, then slide the Felt Weir under the batten until its upstand meets the bottom of the batten and the front edge projects approximately 25mm into the slot cut in the underlay. Fold the top cut of the underlay over the batten and secure with a clout nail, fold remaining cuts outward to form upstand.

3. Fit Lo-Vent over the cut slates and the hole in the underlay.

4. Complete the roof in the normal manner.

Note: Soil Vent Terminals should be positioned 1 metre vertically above the highest opening in the building. Soil/Air Terminals should be positioned no closer than 600mm, in any direction, from each other.

5. A flexi pipe is provided to connect to either a soil pipe or duct for mechanical extraction.