Signs, barriers and hazard markings need to stand out. Short answer: National Fluorescent Paint is a solvent-based acrylic with fluorescent pigment, in red, orange, yellow and green. National’s system is one coat of Acrylic Rock Top Coat (matt) followed by two coats of Fluorescent Paint, with an optional Nationalthane Clear overcoat for outdoor exposure. It covers about 12 m² per litre and is touch dry in 30 minutes.
Key facts
| Type | Solvent-based acrylic with fluorescent pigment |
| Uses | Road signs, topcoating many surfaces, boosting visibility over matt Acrylic Rock |
| Finish | Smooth, glossy |
| Colours | Red, orange, yellow, green |
| Volume solids | 43 ± 2% |
| Spreading rate | 12 m² per litre (theoretical) |
| Film per coat | 35 microns dry (80 wet) |
| Drying at 30°C | Touch dry 30 minutes; recoat 5 to 6 hours; hard dry 12 to 14 hours |
| Application | Spray, brush or roller |
| Thinning | 5 to 15% with National Fluorescent Thinner |
| Storage | Below 25°C; shelf life 18 months sealed |
The system
- Base, one coat: Acrylic Rock Top Coat, matt.
- Fluorescent Paint, two coats, 5 to 6 hours apart.
- Optional for outdoor use: Nationalthane Clear. See the Nationalthane guide.
How much to buy
At 12 m² per litre, two coats on 10 m² of signage need about 1.7 litres, and 25 m² need about 4.2 litres, by our calculation.
Frequently asked questions
Can I use it for car park lines?
National lists road signs, not road surfaces. For lines on asphalt and kerbs, use National Road Marking paint.
Which thinner?
National Fluorescent Thinner, 5 to 15%. Our thinner guide covers the other National products.
Step 1: prepare the surface
- Masonry: clean, dry and sound, per National’s surface preparation guide.
- Steel signs and posts: degrease, then clean to Sa 2.5 or St 2 and prime.
- Over Acrylic Rock: National lists it over matt Acrylic Rock to boost visibility.
What the numbers mean
Coverage = 43 × 10 ÷ 35 ≈ 12.3 m² per litre, matching the sheet’s 12. Wet film = 35 ÷ 0.43 ≈ 81 microns, matching its 80.
| Area | 1 coat | 2 coats |
|---|---|---|
| 5 m² (signs, bollards) | about 0.4 L | about 0.8 L |
| 20 m² | about 1.7 L | about 3.3 L |
Mistakes to avoid
- Using a general thinner. The sheet lists National Fluorescent Thinner.
- Storing it hot. Keep below 25°C.
- Recoating before 5 to 6 hours at 30°C.
For lines on roads and car parks, see National Road Marking Paint.
Buy in Sharjah and Dubai
Shop Acrylic Rock Top Coat 800 White for the base coat, or message us on WhatsApp for Fluorescent Paint and thinner.
Sources
- National Fluorescent Paint data sheet (PDF, via AEC Online)
- National Paints surface preparation guide, Sec. A-2 (PDF)
Retrieved 3 November 2026. Quantities are our own calculations. The main image is illustrative.
