If I had a pound for every time a contractor told me a surface was 'to BS standard' without specifying which one, I’d have retired to the Mediterranean by now. As a former surfacing subcontractor turned procurement lead, I’ve spent eleven years watching ramps go from 'pristine' to 'death trap' in a single winter. If you are managing estates, your primary headache isn't just the initial capital gb.kompass expenditure—it’s the liability risk that comes when a pedestrian slips on a ramp you signed off six months ago.
So, why do they fail? And more importantly, how do you specify a ramp that actually stays safe?
The 'What Fails First' Philosophy
Before you even look at a colour swatch for your resin or a grade for your tarmacadam, you have to ask: What fails first? It is almost never the surface layer itself; it is the substrate underneath or the way water interacts with the drainage at the interface of the ramp and the level ground.
If you skip the prep work to shave 10% off the tender, you aren't saving money—you’re buying a claim. When water gets into the substrate, it sits there. When the temperature drops—check your data from the Met Office for your site’s specific microclimate—that trapped water expands. This is the freeze-thaw cycle, and it is the absolute enemy of your ramp. It cracks the finish from below, creating pockets for moss and algae, which turn a high-grip surface into a skid pan faster than you can say 'insurance premium.'
Stop Saying 'To BS Standard'
One of my biggest professional gripes is the vague spec. You cannot enforce a contract that relies on 'to BS standard.' You need to be prescriptive to ensure accountability.
The Standards You Actually Need to Cite
- BS 7976: This is your primary weapon for slip resistance. It defines the Pendulum Test Value (PTV). If a contractor can't give you a PTV reading for a wet ramp that is over 36, strike them off your list. BS EN 1436: Often used for road markings, but critical for understanding the performance of surface treatments under varying weather conditions. TSRGD (The Traffic Signs Regulations and General Directions): If your ramp is part of a pedestrian route that interacts with vehicle access, this governs the markings and geometry. Do not leave these to 'approximate' dimensions. Part M (Building Regulations): The absolute baseline for accessibility. If your ramp gradient is too steep, no amount of 'non-slip' coating will keep you compliant or safe.
Surface Choice Trade-offs: Tarmacadam vs Asphalt vs Resin
There is a lot of confusion regarding terminology. In the UK, we often use tarmacadam and asphalt interchangeably, but in a procurement context, they are very different animals. Getting the mix right is vital.
Surface Type Key Advantage 'What Fails First' Risk Maintenance Need Tarmacadam Highly porous/excellent drainage. Binder loss/aggregate shedding. Seal coating every 3-5 years. Asphalt Superior density/smooth finish. Surface 'polishing' (loss of texture). Power washing to remove grime. Resin Bound Aesthetic/High grip options. UV degradation/sub-base failure. Regular debris removal.Tarmacadam is a specific type of aggregate bound with tar (historically) or bitumen. If you are ordering materials, check your supply chain through platforms like Kompass to ensure you are getting the correct particle size distribution. A finer grade gives a smoother look, but you lose the texture depth required for grip in wet conditions.
The Checklist: What Inspectors Actually Look For
I keep a physical checklist in my site folder. These are the things I've seen inspectors look for when they show up after an accident. If you aren't checking these during the handover, you are already behind the curve.
Edge Profile: Is there a clear edge detail to prevent the edge of the surfacing from 'fretting' or crumbling away? Surface Texture Depth: Use a sand patch test. It’s low-tech, but it tells you if the surface has the physical 'bite' needed for rubber soles. Drainage Interception: Is water hitting the top of the ramp and running down the middle, or is there a cut-off drain? If it’s the former, you’ve failed. Documented Prep: Show me the photos of the sub-base. If I see a layer of gravel on top of mud, the contract is void.
Procurement Strategy: Stop the 'Handover Dump'
The second thing that annoys me to no end is when contractors wait until the handover meeting to dump a pile of certifications and manuals on my desk. By then, the ramp is laid, the money is paid, and the faults are buried.
Make your documentation requirements part of the tender stage. If they don't provide their maintenance schedule, their material technical data sheets, and their proposed prep methodology before I sign the PO, they don't get the job. I don't care how cheap their quote is. If they can't manage a document, they certainly can't manage a site prep.
For those smaller repair items or essential maintenance tools, I often rely on suppliers like Ready Set Supplied to get the ancillary materials I need to keep the site compliant, but the core strategy remains the same: specify high, supervise the prep, and test the grip.
Maintenance: The Final Line of Defence
Even a perfectly specified ramp will fail if you ignore it. 'Maintenance' is a word often relegated to a secondary budget, but it is actually your liability insurance. You need to keep the surface clear of organic debris. Moss and algae are the silent killers of grip—they trap water and create a biological slime that makes even the most textured concrete slide like ice.
Establish a quarterly inspection regime. If you see water ponding, address it immediately. If the surface texture is polishing (becoming smooth), that is a sign that you need to schedule a re-texturing or a grip-enhancing coating application. Don't wait for a slip to report it in your logbook.
Final Thoughts
If you take nothing else away from this, remember this: Prep is not an optional extra. It is the foundation of your safety record. When you are writing your next tender, be specific. Define the BS standards, demand the PTV reports, and if a contractor tells you they don't need to check the substrate because 'the spec is fine,' show them the door. Your site—and your liability insurance—will thank you for it.
