After eleven years in estates and facilities procurement, I’ve walked hundreds of car parks, ramps, and pedestrian routes. I’ve seen the good, the bad, and the downright dangerous. But nothing grinds my gears quite like a client—or a project manager—who treats documentation as a "tick-box" exercise to be completed on the day of handover. If you wait until the contractor is packing up their vans to ask for compaction test results, material safety data sheets, or compliance certificates, you have already lost the war.
In the world of surfacing and infrastructure, asking for documentation at the end is a fundamental failure of risk management. It transforms a professional project into a high-stakes gamble where, more often than not, the client is left with no practical remedy when things inevitably go wrong.
The Fallacy of "To BS Standard"
One of my biggest professional pet peeves is the contractor who includes "works completed to BS standard" in their tender response without specifying which British Standard they are referring to. It’s lazy, it’s vague, and it’s a massive red flag. If I’m buying a surface, I need to know they aren't just reading the back of a bag of aggregate.
When we talk about access routes and car parks, we aren’t just laying material; we are managing liability. You should be looking for specific adherence to:
- BS EN 1436: Essential for road markings—if the retro-reflectivity isn't right, you’re creating an accident waiting to happen at night. BS 7976: The pendulum slip resistance test. If your pedestrian route doesn’t meet the wet-pendulum requirements, your insurance premium will be the least of your worries when a slip-and-fall claim hits your desk. TSRGD (Traffic Signs Regulations and General Directions): If you’re marking a car park, you don't just "paint lines." You follow the legal requirements for layout and signage. Part M of the Building Regulations: The bible for accessibility. If your ramps aren't compliant with Part M, you’re discriminating against users before the project is even signed off.
If these aren't documented at the tender stage checks, how do you expect to enforce them when the contractor is already off-site and your budget is closed?
"What Fails First?" – The Site Supervisor’s Truth
Before I moved to the client side, I spent years as a site supervisor for a surfacing subcontractor. I learned one golden rule: always ask, "What fails first?"
In the UK, the answer is almost always the substrate or the drainage interface. Contractors love to skip the prep work. They’ll slap a layer of tarmacadam or asphalt over a crumbling sub-base because it looks perfect for the first three weeks. But when the first real frost hits, you find out exactly how much "prep" they really did. The Met Office archives tell us everything we need to know about our climate; if you aren't factoring in freeze-thaw cycles into your spec, you’re building for failure.
If you don't demand proof of sub-base compaction levels and material composition before the first load is laid, you will never know if the material is fit for purpose. Once the tarmacadam is down, the only way to check the depth or the base quality is to core sample it. By then, the damage is done. You have dispute risk that can drag on for months, and your site is out of action.
Comparison of Surface Materials
To help you understand why documentation is vital, let’s look at the trade-offs between common materials. Note that every one of these requires a different set of compliance paperwork.
Material Primary Failure Mode What to Document Tarmacadam Oxidation & Cracking Compaction density, aggregate size distribution, sub-base CBR values. Asphalt Freeze-thaw penetration Binder grade, laying temperature (must be hot), thickness profile. Resin Bound Delamination/UV fading UV stability of resin, mix ratio, base porosity certification. Concrete Spalling/Cracking Curing times, reinforcement spacing, slump test results.The Role of Procurement Platforms
Procurement isn't just about finding the cheapest quote; it’s about sourcing reliable supply chains. Using platforms like Kompass (gb.kompass.com) allows you to verify the credentials and certifications of contractors before they even receive your tender document. Why waste time with a company that can’t prove their environmental management or health and safety ISO certifications?
Similarly, when sourcing materials, leaning on providers like Ready Set Supplied (readysetsupplied.co.uk) helps ensure that the goods being delivered to site match the technical specifications you’ve written. If you specify a high-performance binder, you need to ensure the delivery documentation matches that spec exactly. Waiting until the end of the project to check this is a recipe for disaster.
Why Documentation at Tender Stage is Non-Negotiable
I keep a personal checklist of what the health and safety inspectors actually ask for when they turn up on a site. It’s rarely the "pretty" things. They want the records of the sub-base, the drainage calculations, and the slip-resistance ratings. If you ask for these at the tender stage, you achieve three things:
You filter out the cowboys: Contractors who don't keep good records will drop out of the tender process immediately. They can’t provide what they don’t produce. You set the standard for the quality of work: When a contractor knows you require compaction test results as a condition of payment, they *will* ensure their team is compacting properly. You minimize dispute risk: If everything is documented, there is no "he-said, she-said." The data speaks for itself.If you wait until handover to request these documents, the contractor knows they have the upper hand. They have your money (or most of it), they are off-site, and they have no incentive to go back and rectify a sub-standard job. At that point, you have no practical remedy. You’re left with a car park that might look fine today but will be a crumbling mess of potholes by the time the next freeze-thaw cycle hits https://gb.kompass.com/c/news/1/how-property-managers-are-specifying-access-routes-for-compliance/7a3bf450-4884-4dfd-8c6d-ba8f5d025f4f/ in January.
The "Approximate" Trap
Finally, a word on drawings. I absolutely hate the word "approximate" in a tender pack. If a drawing shows an "approximate" area for a resin-bound pedestrian route, your contractor will give you an "approximate" finish. My checklist for every tender includes precise dimensions and clear, measurable performance standards. If the dimensions are vague, the contractor has a license to cut corners on the preparation—which, as we’ve established, is exactly where the failure starts.
Conclusion
Don't be the facilities manager who is surprised by a failed site six months after handover. Stop accepting "to BS standard" as an excuse for lack of evidence. Use the tender stage to demand the documentation that proves the work is being done right. Use your tender stage checks as a filter, lean on reputable platforms to audit your supply chain, and always— always—ask yourself "what fails first?" before you sign the contract.
Procurement is the first line of defense against infrastructure failure. Treat your documentation like the structural foundation it is, and you won’t have to worry about repairs when the weather turns.