Chimney bench sheet metal type BD 350/35, complete set

Roof brackets and chimney sweep benches allow safe movement on the roof. Such a roof communication system allows access to chimney and antenna installations, and can also serve as an additional escape route. The angle of the platforms and brackets can be adjusted by properly positioning the platform relative to the bracket. The angle can be adjusted from 0 to 65°.

When choosing a roof communication kit, two parameters should be taken into account:

• Module length - metal roofing is available on the market in several standard module sizes: 320, 330, 350, 370 or 400. The most common size is 350 mm, and sizes above 400 mm are increasingly rare. Shorter modules, such as 330 mm, have been a novelty for several years.

• Sheet module height - The most commonly used modules on the market are 20 mm, 30 mm and 35 mm. Brackets can be used with a tolerance of ± 3 mm. For a higher module - you can use a bracket with washers or a kit for this type of covering.

BD (bracket type) - A (module length) / B (profile height):

Example bracket sizes:

• BD-320/35
• BD-330/30
• BD-350/20
• BD-350/30
• BD-350/35
• BD-370/35
• BG-400/20

For a list of suitable metal roofing materials, see the compatibility tab.

For proper installation you will need the following items:

• Platform, chimney sweep bench
• Chimney bench bracket (depending on the type of roofing)
• Chimney bench connector (if you need to connect a longer row)
• Mounting screws to connect the individual components (included free of charge with the BENT kit )
• Screws for attaching the bench to the structure

Fastening the elements to each other and to the roof.

Roofcommunication brackets should be attached to the wooden roof structure with wood screws complying with PN-EN 14592+A1:2012. 8 mm x 60 mm screws for fixing the bracket to the roof can also be found in our store. The components should be connected together using the screws (Ø 8 mm) included in the kit.

The chimney brackets are designed to form a string across the roof slope. The chimney brackets must be attached to the roof at a distance of at least 80 cm. Note that this is the maximum distance allowed by the standard. More detailed information about the brackets and the number of fixing screws and their dimensions must be specified in the technical design.

Roof purlins complement the chimney bay system and are designed to create passageways along the roof slope. Roof purlins should be spaced alternately, allowing the roof to be walked on like a staircase. When designing the spacing between eaves, it is necessary to take into account the angle of the roof:

• For roofs with a slope of up to 30° - install tiles in every second row of tiles, at a distance of 70 cm from each other.
• For roofs with a slope of more than 30° - install battens in each row of tiles, every 35-40 cm.

Note: The above information is the result of collected information and our experience. The above information should not be considered as installation instructions. The use of roof communication should be in accordance with the technical design prepared for the building, taking into account the requirements of relevant standards and applicable technical and construction regulations. To add additional brackets to the kit, use the menu of individual items.

Chimney Sweep Bench Bracket - is designed for installation on tile roofs. It is a load-bearing element of the chimney batten or roof slope. The bracket is attached directly to the metal roofing through the batten to the rafters. Fastening screws ø8 must be selected so that their length significantly exceeds the thickness of the batten. To avoid breaking the roofing seal, the screws must be used with a sealing washer, and the mounting holes must be additionally sealed with asphalt, silicone or other sealant. Footbridge brackets must be installed at a distance of at least 800 mm and at every possible connection of chimney grilles with fasteners.