Rytons Rytweep A1 Fire-Rated Metal Cavity Weep Vents (Box of 50) RYTWEA1METAL

A1 fire-rated metal cavity weep hole duct with two-part electroplated coating. Fast and easy to position while building work continues. Practically invisible in the mortar joint once installed, with only the small weep outlet showing. The tapered design restricts entry of wind-driven rain, preventing staining, maintaining the aesthetic appearance of the building and adhering to NHBC Standards.

• Meets Regulation 7(2) and Building Regulations Approved Document B – Suitable for use in high-rise buildings with a storey of 18m or more above ground level.
• Meets Technical Handbook 2019: Domestic and Non-Domestic, 2.7 (Scotland) – Suitable for use in buildings with a storey of 11m or more above ground level.

A1 Fire Classification

Rytons A1® Fire-rated Metal Rytweep® is made from ZL5 zinc. Zinc is considered fire class A1 without testing, as per European Commission paper 96/603/EC referred to in BS EN 13501-1:2018.  Classification: A1. Definition: Non-combustible. Description: No contribution to fire.

Installation instructions

Installation is fast and easy, as work proceeds with the Rytweep® replacing a vertical mortar joint. Ensure the tapered end with the circular outlet is facing the outside and is flush with the external face. Position the bottom of the Rytweep® on the mortar bed against the brick/block. Position the next brick alongside the installed Rytweep® and mortar until only the small weep outlet is visible (ensuring the outlet does not become blocked). Space every fourth brick to drain cavities above and below the DPC, and above lintels and cavity trays. At least two weep holes should be provided over an opening, i.e. lintel.