A1 Rated Bespoke Ducting

Made to order A1 fire rated ductwork for suitable for residential & commercial ventilation systems for connection to air brickss and grille terminations. 

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Part B: Fire Safety

Fire protection is an essential aspect of building safety as fires spread quickly through a building and pose a significant risk to occupants lives. In accordance with Approved Document B Volume 2 (2019 edition incorporating 2020/22 amendments), combustible materials have been banned in and on the external walls of buildings in the following instances;

• Residential Buildings over 11m (England & Wales)
• Recreational & Assembly Buildings over 18m
• Buildings over 11m (Scotland)
• Any buildings undergoing unsafe cladding remediation work

Part B: Fire Safety

Class A1 Non Combustible Ducting

For residential ventilation system such as MVHR that have terminations running out to the building facade, A1 rated ductwork will be required.

The A1 rated ductwork is directly connected to the standard PVC ducting used (e.g. 220 x 90mm) at the slab level, through the cavity wall and then dropped to meet the desired termination position on the facade wall. The fire resistance classification criteria for construction products is detailed in BS EN 13501w+ A1:2018 and includes a list of products (European Commission 96/603/EC) which, under specified conditions, can be considered to be class A1 without testing. (see full details in the technical specification)

Pinnacle A1 Rated Non Combustible Ducting is manufactured from 0.9mm hot dipped galvanised mild steel and is sufficient to provide A1 classification for the purposes of ductwork terminating through the façade of the building.

Class A1 Non Combustible Ducting

Bespoke A1 Ductwork and Transitions

Every building is different, which means ductwork transitions to termination points often require a bespoke solution to suit the façade, finish, and overall architectural design. 

From straightforward reducers and offsets to more complex façade terminations, we work with contractors, consultants, and designers to turn project requirements into practical, precision-made solutions.

More about Bespoke A1 Ducting
Bespoke A1 Ductwork and Transitions

Made to Order - A1 Duct Transition to Air Brick or Grille. 

We specialise in fabricating A1 Rated Ducting based on specifications and design drawings provided.

We have manufactured many different A1 fire-rated ductwork transitions, each one bespoke to the specific needs of the project including;

• Brickwork
• Render
• Cladding
• Connection to fascia board
• Pre-fab
• Specialist external finishes
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