GRP Installation: GRP Nosing’s can be installed either with adhesive or with adhesive and screws, but to be safe we would always recommend using both particularly in heavy foot fall applications. Correct installation is vital to its performance. We recommend that you assess the installation substrate fully before fitting. It should be sound and reasonably level. Any remedial work must take place before installation. We also recommend that the profile be installed with our Multitread Adhesive, and using stainless steel screws. Upon request we can supply your nosings predrilled ready for installation. Dry fit stair nosings to ensure they fit freely and that they sit flat down on the surface. If required they can be trimmed on site to suit, ideally using a skill saw with a 4mm diamond blade or an angle grinder with a 1mm blade. Please ensure that goggles and gloves are worn at all times when any form of cutting is involved. Drill two holes on each side of the top surface in the centre (grit surface), approximately 50mm in from the side, then approximately every 400-500mm. Dependant on the substrate it may be necessary to increase or decrease this spacing. For larger nosings, it may be necessary to have further fixing points in the centre of the tread. Pre-drilling the holes before drilling into the substrate is recommended. Dry fit the drilled nosing again and mark out the holes on the substrate, then drill the required holes for your fixings in the substrate material. Ensure any dust is removed and the area cleaned after drilling. Apply an 6mm bead (this may need to be increased dependant on the substrate conditions) of the adhesive around the periphery of the underside of the stair nosings approx. 15mm in from the edges. If you are fixing your nosing to carpet or similar material – you can skip the adhesive section of application. The adhesive is best applied using a skeleton gun. Immediately press the panel firmly to the substrate to ensure adequate transfer of adhesive (depending on the size of the bead, this will elevate the sheet by approximately 1-1.5mm). A firm bond will be achieved in about one hour under normal circumstances and conditions.
