Ulti-Mate Stonewold Mk2 Roof Tile Vent - Grey 
Sika Damp-Proof Slurry Grey - 25kg 
1204 Underfloor Vent Vertical Extender by Timloc has excellent properties making it efficient in allowing airflow through it; it complies with various regulations making it a tested and proven product; these include,
- Satisfies all NHBC requirements
- Compliant with all Building Regulations
- Meets all relevant British Standards
- Manufactured to BS EN ISO 9001
- Complies also to BS EN ISO 14001
Installation
The 1204 Extender should be applied to fit over the original 1201 ventilator. Pull the 1201 underfloor vent apart, and 1204 will side in between. To ensure that there is no loss of airflow, seal with insulation tape or duct tape.
