Linear Fire Stop 553

Linear Fire Stop 553

Linear Fire Stop 553 is a compressible strip designed for installation within static voids.

The Fire Stop provides up to 4 hours’ firestopping at the junctions of compartment walls and floors with equal fire resistance.

Maximum void size to be filled = 50% of wall width.

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  • Length: 1200mm
  • Width (553): Wall width
  • Width (554): Wall width x 2
  • Up to 4 hours’ firestopping
  • Made-to-measure service
  • A range of thicknesses available
  • Easy to install

Thickness to suit voids from 10mm to 100mm. Mayplas will add 5% (min 2.5mm) to the stated void size to allow for compression of Linear Fire Stop (553).

Ordering Information Required:

1. Wall width

2. Actual void size

3. Total linear metres for job

Product Performance

553 Thermal

Linear Fire Stop Strip has been independently tested by BRE Global in accordance with BS 476 Part 20: 1987.


  • Installation of Linear Fire Stop must provide for a tight and accurate fit, whilst allowing for 5% compression

Lengths of Linear Fire Stop may be joined along the wall by careful and tight butt jointing. Installers may find a small plastic or metal ‘slip plate’ useful when fitting Linear Fire Stop between rough masonry surfaces.

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