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GRP Decking Strips - Glass reinforced plastic decking strips

Verified by manufacturer 3 months ago

Course Grade Strip

Watco UK Ltd Variant:

GRP strips for unprotected decks, available in two textures.

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+44 (0)1483 418418 Website



If you need to cut the GRP product, a good quality abrasive disc, jigsaw or hacksaw can be used. The GRP material is quite tough to cut by hand, so if power tools are not readily available, please ask about our cut to size service.

If appearance is critical we recommend the application of a small trial area first.


If mechanical fixing is required, the following may be used as a guide:

  • To timber: no.8 x 30mm zinc plated or stainless steel screws
  • To steel plate: no.8 x 20mm self-tapping pan head Pozi stainless steel screws or No.8 x 20mm self drilling pan head Philips zinc plated screws
  • To concrete: no.8 x 30mm zinc plated or stainless steel impact anchors (Hilti HPS-1 or similar)
  • To open mesh: stainless steel or zinc plated saddle clips and domed head bolts suitable in length for the depth of the existing treads


Lay the items in place to ensure that they fit. Trim using a jigsaw with medium cutting blades (Bosch TI01 AIF or similar are ideal).

  • These are supplied pre-drilled by us. We use a number 10 drill and a number 8 screw. The larger hole size allows for any slight movement that may arise due to the long, thin shape on timber which can flex or expand. If any additional screw fixings are required, please use a number 10 drill and number 8 screw.


These Glass Reinforced Plastic (GRP) strips come in medium and extra coarse textures, bringing security underfoot on unprotected decks.

Watco GRP Decking Strips are pre-drilled at approximately 300mm intervals. One row of holes is drilled in the 50mm and 90mm wide strips, two rows in the 120 mm width. Holes are 50 mm in from each end. Screws are supplied for fixing to timber.

Medium Grade Decking Strips are supplied in 1200 mm and 2400 mm lengths and 50 mm or 90 mm widths.

Features and benefits:

  • Waterproof, rotproof and will not warp.
  • Easy fit, all items preformed. Glue or screw fix, pre-drilled for easy fixing to timber and with all screws supplied.
  • Child friendly. Medium coarse option perfect for decks used by children or vulnerable adults.
  • Suitable for domestic and commercial decking (unsuitable for barefoot areas).
  • Excellent slip resistance even in the wet.
  • Oil and chemical resistant.
  • Cut to size service available with no charge or can be trimmed on site using a hacksaw if required.
  • Ideal for wet or weak substrates which cannot be adequately prepared for paint.
  • Chamfered edges minimise trip hazards.
  • Helps meet the requirements of the DDA and 2004 Building Regulations.

Suitable for use in both commercial and domestic areas and especially effective in wet conditions. They are designed for areas of decking mainly used by children or vulnerable adults.

Areas of use:

  • Wooden decking;
  • Walkways;
  • Jetties, pontoons and marine slipways;
  • Bridges.

General information








Glass Reinforced Plastic (GRP)




1200 mm

2400 mm


50 mm

90 mm

120 mm


Pr_25_57_51_79 Slip-resistant sheets and stripsPrimary
Pr_35_90_60_79 Slip-resistant rebate inserts
Pr_35_90_31_27 Flexible stair coverings


L30/585 Applied slip-resistant

M50/70 Edgings and cover strips

Product range

Anti Slip and Safety / Anti Slip Tapes and Treads
Anti Slip and Safety / Decking

Specification data - Slip-resistant sheets and strips


Glass reinforced plastics.


Pre-finished strip (for insertion).

Slip resistance – water wet (minimum)

80 PVT.






Applying slip-resistant sheets.

Sheet/ Strip size

1200 x 50 mm.

1200 x 90 mm.

1200 x 120 mm.

2400 x 50 mm.

2400 x 90 mm.

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Surface finish



Data Sheet: GRP Decking Strips

Data Sheet: GRP Decking Strips

Case studies

Toyota GB plc Head Office - Slippery Decking Solution

Toyota GB plc Head Office - Slippery Decking Solution

Godalming College - A solution to slippery decking

Godalming College - A solution to slippery decking

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