The Ultimate GRP Decking Strip Fixing Guide
Drill It. Bond It. Fix It Right—Every Time.
A No-Nonsense Approach to Drilling & Bonding for Durability That Lasts
Whether you’re laying anti-slip strips on outdoor timber steps or retrofitting industrial platforms, this guide gives you everything you need—without the fluff.
Precision Drilling Without the Drama
To get those GRP strips secured like a pro, you’ll want drill bits that slice clean and stay sharp. Here’s the shortlist that delivers:
HSS Bits – For everyday drilling with crisp, reliable holes
Carbide-Tipped Bits – When longevity and neatness are key
Diamond-Coated Bits – Ideal for enlarging pre-drilled holes with zero chatter
Tip: Go for a 6mm bit—the sweet spot for No. 8 screws that don’t wobble or crack the GRP.
Smart Drilling Tips
- Tape the surface to guard the gelcoat and avoid wandering
- Drill fast with light pressure—it cuts clean and avoids burns
- Support the underside with timber to dodge blowout
- Suit up with dust protection—GRP particles aren’t skin-friendly
Bond + Bolt = Bulletproof Fixing
Screws alone? They’ll hold. But if you’re after whisper-quiet steps and weather-proof certainty, pair them with the right adhesive.
Why Use Both?
- Double Strength – Screws hold; adhesive seals
- Noise Control – No hollow thump when walked on
- Waterproofing – Blocks moisture from creeping under
- Forgiving Fit – Adhesive levels uneven surfaces for full contact
When Screws Alone Are Enough
- Flat timber surfaces in dry, low-traffic spots
- Temporary installations
- Fast-fit jobs with zero margin for curing time
Fixing Instructions That Actually Work
Drill holes (pilot first) with a quality HSS bit
Run a 6mm adhesive bead about 15mm from each edge
Position screws 50mm from each end and every 250–300mm along the strip
Press firmly and let the adhesive cure (usually 24–48 hours)
Fixing Guidelines from the Field
Our preferred adhesive: Grab Adhesive Solvent Free
It bonds like a champ to:
- Wood, concrete, brick, stone
- Ceramic, plasterboard, plastics, steel
Not suitable for: polystyrene, mirrors, polypropylene, or acrylic
One 290ml tube covers approx. 8–10 decking strips (1000mm each)
Adhesive Line-up
Product Name | Best Use Case | Clear? | Size |
|
GRPA1000CL Clear Sealant | GRP strips, nosing, treads, sheets | 290ml |
| |
NovaSeal SignFix 2 Transparent | Hygiene areas, backlit signs, damp surfaces | 290ml |
|
Both offer superb flexibility, weather resistance, and seamless bonding—indoors or out.
📦 Bulk Order
Need large quantities? Let’s make it easy—call us Multi Supplies 4U
on 01282 930195 and we’ll sort you out.