Product Data Sheet Show all documents

Cromar® F 300 Flat Sheet

300 mm flashing sheet.

Cromar® F 300 Flat Sheet is a versatile flat flashing designed to excel in various roofing applications. Primarily used on the weatherboard beneath slates and tiles, this essential component ensures continuous flashing at roof junctions, providing a reliable barrier against the elements. The Cromar® F 300 Flat Sheet is used for safeguarding roof structures and serves a dual purpose as a gutter lining, showcasing its adaptability. Supplied in 20-metre rolls for efficient and convenient installation. Specifically crafted for non-heat applications, the Cromar® F 300 Flat Sheet combines safety with functionality.  

  • Consistent weight and thickness.
  • Excellent finish and appearance.
  • High strength and flexibility.
  • Excellent long-term durability.
  • Easy jointing.
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Product Data Sheet Show all documents

Usage

  • Can also be used as gutter lining.
  • Primarily used on the weatherboard beneath slates and tiles.

Advantages

  • Consistent weight and thickness.
  • Excellent finish and appearance.
  • High strength and flexibility.
  • Excellent long-term durability.
  • Easy jointing.

Packaging

Boxed

Colour

Grey

Product Details

Product Information

Shelf Life

24 months

Storage Conditions

The packaging must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +30 °C

Length

20 m

Width

300 mm

Thickness

1.2 mm

 

Application

Application steps

APPLICATION INSTRUCTIONS

Flat section for use as continuous flashing under slates at a roof junction. The flashing can also be used as a gutter lining.

The main flat roof laminate should be extended to cover the nailed section of the flat flashing, which is fixed to the decking on the flat roof. It does not need to be extended up the pitched roof section. The pitched roof section should not be fixed but allowed to 'float', thus allowing for expansion movement.

In some circumstances, a thin support sheet of ply under the flat flashing on the pitched section may be appropriate, dependent on the centres of the existing roof rafters.

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