Wet / Dry Riser Systems

Dry riser systems

These are generally found in properties over 18m tall, and essentially consist of a network of pipes that allow for water to be delivered to upper floors if a fire should break out in these areas. Dry risers themselves should be within fire-fighting shafts, and where necessary in protected escape stairs. Dry-riser outlets, or landing valves may be located in protected lobbies, stairs or enclosures where these are available. Dry risers have an inlet connector at rescue service vehicle access level and landing valves at locations on each floor. The fire brigade can then attach a firefighting hose to the outlet and tackle the fire. Dry risers do not contain water when they are not being used, but are charged with water by fire service pumping appliances when necessary.

Wet riser systems

These are typically found in taller buildings, usually over 50m tall. For this reason, they are constantly kept charged with water, so as to be able to provide the same level of protection against a fire in the upper reaches of taller properties.

Servicing and Maintenance

We offer servicing and preventative maintenance for all dry riser systems in accordance with BS9990:2015 Code of Practice for Non-Automatic Firefighting Systems in Buildings.

British Standards recommend that service visits should be carried out every 6 months. Every year one of these service visits is a major service (also known as a wet test) which would include more comprehensive tests such as the hydraulic pressure test. The remaining test is a visual inspection, which due to the accessibility of dry risers and their vulnerability to vandalism, is highly recommended.

Get in touch with us today to find out how we can assist you in ensuring compliance with current fire safety legislation.