FR250BR – Rytons Flat Roof/Abutment Ventilator (897mm L)

FR250BR – Rytons Flat Roof/Abutment Ventilator (897mm L)

Size:

• 897mm L x 68mm W x 27mm H (see image gallery above).
• CAD drawing available by email.

Free Area:

• 22,425mm² per length (25,000mm² per metre).
• Equivalent to a continuous 25mm venting gap.

Colours:

• Brown.

Composition:

• High impact polystyrene.

Installation:

• Fix to the top of the facia board and overlay with plywood and felt. For an abutment installation first create a void by securing a softwood timber upstand to the roof timbers at the abutment (maintaining a gap of at least 25mm with the wall). Fix to the top of the upstand through the pre-formed slots across the top of the ventilator. A timber fillet should be placed on top of the ventilator before being dressed with lead.

Handling Information:

• Box quantity: 20 lengths.
• Box size: 102cm W x 12cm H x 35cm D.
• Box weight: 3kg.

Reference Material:

• British Standard BS 5250.
• The Building Regulations, Approved Document C.
• The Building (Scotland) Regulations, Mandatory Standard 3.15.
• The Building Regulations (Northern Ireland), Technical Booklet C.
• NHBC Standards, 7.1 Flat Roofs.