Can I use this checklist for car parks and commercial sites?

Yes. It's designed for both public and commercial settings. For car parks, include layout, bay counts, and access constraints.

Can this be used for highways work?

It can structure a brief, but highways projects often reference additional specification frameworks and standards.

Should I specify standards like EN 1436?

If you're in a compliance-led procurement environment, yes—at least at a high level. If not, you can state performance intent and require a method statement.

I don't know the surface condition — what should I do?

Send photos and choose 'Contractor to propose appropriate surface preparation' plus a requirement for a method statement.

Thermoplastic Markings Spec Checklist UK

Specification checklist

Complete the sections that apply to your project. Use the finished checklist as the basis for your brief, tender or quote request.

3) Surface details

Critical for adhesion and longevity.

Surface type

Condition

Age

Known issues

Surface preparation expectation

A) Contractor to propose appropriate surface preparationB) Minimum: clean, dry, sound surface + treatment for contaminationC) Include primer where substrate/conditions require it

If unsure, choose A + require a method statement.

4) Method intent

Don't over-specify — state your intent.

Standard lines and bays — durable, clearly defined lines suitable for site conditionsHigh-wear zones — emphasis on durability for heavy turning/brakingVisibility priority — bead system designed for strong night visibilityRepairs — preformed thermoplastic for small reinstatements/patches

Helpful background:

5) Visibility

Night visibility — glass beads to support retroreflectivity appropriate to locationWet-night consideration — bead/texture strategy to maintain visibility when wetNo specific visibility requirement

6) Skid resistanceRequire appropriate skid-resistance approach for designated zones

Only where relevant — approaches, crossings, tight turns, pedestrian-heavy zones.

→ Skid resistance options

7) Access, safety & traffic management

Access windows and site restrictions

Traffic management required?

YesNoUnknown

Permit/booking requirements

Site induction / RAMS requirements

→ Thermoplastic operational safety

8) Quality expectations

Define acceptance without forcing unrealistic guarantees:

Coverage & geometry: lines/symbols installed to agreed layout with consistent width and tidy edges
Defects: no major voids, tearing, lifting, smearing, or obvious adhesion failures
Visibility: glass beads applied consistently where specified
Site readiness: markings protected until safe to reopen / handover complete
Snagging: agree a snagging window and rectification process

Additional quality notes

9) Handover evidence

Require a minimal evidence pack:

Photos before/during/after (key areas)
As-installed mark-up (if a drawing exists)
Brief method statement summary (surface prep + method used)
Any product/process documentation provided as part of delivery

Additional handover requirements

10) Quote return format

Ask for:

Price breakdown (prep / install / removal / TM / extras)Programme assumptionsExclusions (weather, substrate failure, permits)Validity periodLead time and mobilisation plan

Then submit to get pricing → Get a quote

Acceptance & handover

A good thermoplastic marking job is typically defined by:

Correct layout (matches the plan)
Crisp edges and consistent line width
Solid adhesion (no lifting)
Appropriate bead coverage for visibility where required
A clean handover pack so future maintenance is straightforward

If you need to understand why surface condition matters → Surface preparation & primers

Common spec mistakes

Over-specifying a method too early without knowing the substrate
Not stating access windows (day/night/weekend)
Skipping removal assumptions when old markings exist
No acceptance definition → disputes at handover
No visibility intent when night-time performance is important

Thermoplastic Markings Specification Checklist (UK)

Specification checklist

Lines

Symbols & legends

Removal / refresh

Acceptance & handover

Common spec mistakes

FAQ