Hardrow®

• Construction Sequence
• Components
• Documents

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.