Derek Finnegan I’ve spent the last 11 years in facilities and estates procurement, and if I had a pound for every time a contractor told me, “We can just overlay the existing surface to save on resurfacing costs,” I’d have retired to a beach by now. Before I was sitting in the client-side office writing tender packs, I was out on the ground as a surfacing subcontractor supervisor. I’ve seen the mistakes made on the cold, wet mornings when the pressure to move on to the next site outweighed the common sense of doing the job right.
The number one question I ask before specifying a single metre of tarmacadam or asphalt is always: “What fails first?” If you don’t have a solid answer to that question, you aren’t managing an asset; you’re managing a liability.
The Myth of “Surface Prep is Optional”
Let’s get one thing clear: when you see a quote that promises to shave thousands off your budget by skipping deep-level surface prep, that isn’t a “saving.” That is an invoice for a second resurfacing project in three years’ time. If the sub-base is compromised, no amount of high-quality asphalt will save you.
When you skip the investigation—core samples, sub-base compaction tests, and drainage assessments—you are essentially building on quicksand. The UK climate is our biggest enemy here. I always check the Met Office data for the specific site location. We have a high frequency of freeze-thaw cycles. What Should Canadian Readers Learn from the UK Medical Cannabis Model? If moisture is trapped in a failing sub-base or an un-prepped layer of existing tarmacadam, that water will expand as it freezes. The expansion forces the bond between your new surface and the old one to shatter. This is the primary driver of early failure in car parks.
Liability and the “BS Standard” Trap
One of my biggest professional pet peeves is the contractor who includes the phrase “to BS standard” in their tender response without naming the specific standard. That is a red flag. If you are responsible for an estate, your duty of care regarding access routes is absolute. If a pedestrian slips on a ramp or a vehicle damages a suspension on a hidden pothole because you skimped on the spec, you are legally exposed. What Does a Clinic Portal Show for Delivery Updates? A Guide to Digital-First Healthcare
To avoid this, you must demand that your tender pack references specific, measurable standards. If a contractor doesn’t know these by heart, show them the door:
- BS EN 1436: This governs road marking materials. If your lines aren’t retro-reflective and skid-resistant to these specific levels, you’re creating an accident waiting to happen in low light.
- BS 7976: This is your slip resistance testing standard. You don’t want a “guess” on how slippery that resin coating will be in the rain. You want the pendulum test value (PTV).
- TSRGD (Traffic Signs Regulations and General Directions): If you’re marking out a car park, you don’t get to invent your own symbols. Follow the regs, or face the consequences if a liability claim lands on your desk.
- Part M (Building Regulations): This is non-negotiable for accessibility. If your gradient or surface finish doesn’t meet Part M requirements, you are barring access to disabled users and opening the site up to discrimination claims.
Choosing Your Weapon: Material Trade-offs
Every material has a breaking point. When I’m evaluating https://gb.kompass.com/c/news/1/how-property-managers-are-specifying-access-routes-for-compliance/7a3bf450-4884-4dfd-8c6d-ba8f5d025f4f/ what to put down, I look at the traffic volume and the “What fails first?” factor for each material type:
When procuring these, I use platforms like Kompass to verify the provenance and compliance of my suppliers. You need to know that the asphalt you are buying isn’t a cheap substitute that will lose its structural integrity under the first heavy frost of winter.
The “Approximate” Danger Zone
If I see the word “approximate” in your dimensions, I’m sending the drawings back. I’ve been on enough sites to know that “approximately 500 square metres” is how contractors bake “surprises” into their final accounts. These surprises usually manifest as “unforeseen ground conditions,” which is code for “we didn’t look, and now we’re going to charge you double to fix it.”
I always insist that all site documentation—including exact drainage locations and sub-base depth readings—is provided at the tender stage, not at the handover. If you wait until handover to find out the drainage isn’t up to code, you’ve already signed the cheque. Use professional suppliers like Ready Set Supplied to get an accurate bill of materials early on. It saves me from the headache of mid-project budget renegotiations.
A Supervisor’s Checklist for Success
In my years of experience, I’ve kept a private checklist of what inspectors actually ask for when they turn up at a site. If your resurfacing project doesn’t have these, you’re going to be in trouble:
Conclusion: Invest in the Invisible
The reason most car parks fail within five years isn’t because the asphalt was “bad.” It’s because the prep was non-existent. When you are looking at your next estates budget, stop thinking about the finished look and start thinking about the structural health underneath.
Ask yourself: What fails first? If you don’t know the answer, talk to your engineering team. Don’t let your contractor tell you that “BS standard” covers their lack of diligence. Insist on specifics, document your sub-base, and never, ever accept “approximately” as a measurement. Your budget, and your liability insurance, will thank you for it.
