Your browser version is not officially supported, and you may experience a degraded service. Please upgrade your browser.
Download the Watco App and get 10% OFF your first order placed via the app. Learn more

Watco Firm-Step® Standard GRP Step Covers

An affordable and versatile solution for slippery steps

  • Tested for slip resistance
  • 3 years guarantee against breakage
  • Interior and exterior use
  • Free cut to size service
Sign in or register for volume discounts

Frequently bought together


Suitable for exterior and interior use, our Firm-Step®Standard GRP Step Covers provide an affordable and versatile solution for slippery steps in areas of medium foot traffic, and can be fitted to concrete, timber, brick, metal and stone. Available in black and yellow, the edges of the steps are highlighted for enhanced safety. These 55mm DDA compliant stair covers are tough and chemical resistant which make them suitable for industrial and commercial use, including fire escapes and all types of staircases.

Recommended areas of use

  • Suitable for concrete, wood, stone, tiles and metal surfaces


  • Independently tested for slip resistance
  • Available in a range of standard sizes or take advantage of our free cut to size service
  • Screws, fixing plugs and a free pre-drilling service are available if required. Alternatively, we suggest Watco UltraBond Tape and Primer to bond the tread to dry indoor steps
Pendulum Slip Test Values
Top SurfaceDry PTVWet PTV
Coarse Grit71 Extremely low slip potential 63 Extremely low slip potential 
Properties Resiliant, tough and chemical resistant.
Suitable for Fire escapes and staircases. Concrete, timber, brick, metal and stone.
Interior or Exterior Interior and exterior.
Primer required Optional.
Height (mm) 55
Width (mm) 345


Any damage or undulations to the substrate should be remedied to ensure the step covers will be on a reasonably flat and even surface. If using an adhesive, the substrate must be clean and dry and free from oils, grease, dust and any loose particles. The underside of the step cover must also be clean and dry. Where the substrate is contaminated (e.g. by oil), mechanical fixing is essential. Prior to applying any adhesive, it is advisable to carry out a dry-fit first to ensure a suitable fit.


We recommend using Watco Adhesive Mastic along with mechanical fixings to prevent rocking on uneven surfaces. Watco Adhesive Mastic is also a sealant and can be used to seal around the edges and stop water lying between the step cover and the substrate. Water will not affect the step covers but can affect substrate such as wood or metal, causing rot or rust. Watco Adhesive Mastic also offers a secondary fixing in the unlikely event that a mechanical fixing fails. Alternatively, Watco UltraBond Tape and Primer can be used to bond the tread to dry indoor steps such as wood, metal, steel, unsealed, porous concrete, brick, stone, and blockwork.

Run a bead of adhesive around the perimeter of the stair tread approximately 25mm in from the edges and then cross hatch at about 200mm apart. Apply sufficient hand pressure to bed the stair tread cover into position. With Watco Adhesive Mastic, optimum bonding will be obtained after 24 hours (at 20°C). However, stairs can be made available to traffic a few hours after bonding, but this is subject to temperature so it is worth testing first.

One 310ml tube of Watco Adhesive Mastic is sufficient for any one of the following:

  • 5 x 600mm wide step covers
  • 3 x 1000mm wide step covers
  • 2 x 1500mm wide step covers
  • 2 x 1200mm wide step covers

Watco Firm-Step® Standard GRP Step Covers can be drilled and secured with stainless steel screws. Follow the Preparation procedure prior to fixing:

  • Always ensure that the screw length is slightly longer than the plug length to obtain a good fixing
  • Use Watco Mastic Adhesive on the underside to prevent the GRP drumming and rocking on the substrate
  • Fixing is generally recommended at approximately: 70mm from the front, 50mm from each side, 60mm from the back, at a maximum of 250mm apart
  • If fitting to a metal substrate, use self-tapping screws. There is no need to counter sink the screw holes since the screw can be tightened so that it beds into the gritted surface, making it flush with the wearing surface


Installation Guide
Ask a question

Be the first to ask a question...

Ask a question
0 questions / 0 answers

£20.30 (Ex VAT)

In stock

Sign in or register for volume discounts

What our customers say

Join our mailing list for the latest news...