Which paint type should I choose (1K, 2K, 2K Air-Dry)?

1K is ready to use and suits lighter-duty jobs and touch-ups. 2K contains a built-in hardener for higher chemical and abrasion resistance on demanding surfaces. 2K Air-Dry provides 2K performance with a non-isocyanate hardener for easier handling. Note: our 2K aerosols are supplied as Acrylic Enamel only.

Do I need a primer, and which one is right?

Preparation is essential: clean, degrease and key the surface. Use the correct primer for the substrate: plastic adhesion primers for plastics, glass or fibreglass primers for those materials, and metal/etch primers for metals. Using the right primer improves adhesion and longevity.

How long does it take to dry, and when can I recoat?

For 1K, apply light passes and recoat after around 10–15 minutes; typical cure is about 30 minutes depending on conditions. For 2K, recoat after around 20–30 minutes, touch-dry is about 40 minutes, and full cure is usually 24–48 hours. Temperature and humidity affect all drying and curing times.

How much will I need (coverage & coats)?

A 400 ml aerosol typically covers up to approximately 2 m² per coat on smooth, primed surfaces. Most jobs need 2–4 coats depending on the colour, surface profile and the shade being covered.

Any tips for a smooth, professional finish?

Shake the can for 2–3 minutes and during use. Spray 15–25 cm from the surface in light, even passes with slight overlap. Keep the can upright and clear the nozzle with a short burst after use. Use adjustable fan patterns to suit the area and reduce overspray.

Can I spray indoors, and what safety should I consider?

Only spray indoors with excellent ventilation and appropriate PPE such as a respirator, gloves and eye protection. Protect surrounding areas from overspray. Refer to product data sheets for detailed safety and handling guidance.

RAL Effect 820-1 - Light Grey Aerosol Spray Paint 400ml

Buy RAL Effect 820-1 - Light Grey Aerosol Spray Paint 400ml, colour matched & mixed to order. Available in 1K or 2K with matt, satin or gloss finishes. Professional fan nozzel, even coverage & fast UK delivery.

Product Name: RAL Effect 820-1 - Light Grey Aerosol Spray Paint

Manufacturer: One Stop Aerosols

Product Code: RAL12006

Price: £12.99 – £74.99

Availability:In Stock

RGB Colour Code: 197-200-202

Hexadecimal Colour Code: #C5C8CA

30-day returns policy on all eligible faulty products. Read more about our returns policy.

Trade Application Notes

RAL Effect 820-1 - Light Grey Aerosol Spray Paint is part of the RAL Effects Aerosol Spray Paint Colour Chart. Each order is batch mixed using Lechler binders and colourants, so repeat orders match across aerosols and tins for return visits and snagging.

Formats: 400 ml aerosols in 1K (ready to use) or 2K (with integrated hardener), 1 litre tins, plus touch-up pots and pens.
Finishes: Matt 0%, Satin 30%, Semi gloss 60%, Full gloss 90% to suit client specification and maintenance regime.
Surface prep: Degrease, abrade to a uniform key, remove dust and salts. Use the correct primer for the substrate and environment.
Masking and protection: Mask adjacent glazing, brick, signage and ground. Use sheeting and drop cloths to control fall-out around public areas.
Application control: Vari-nozzle cap allows wide or narrow fan patterns. HVLP-style atomisation helps with edge control and reduced overspray.
Overspray management: Plan wind direction, set screens where required and keep a safe perimeter. Night or early morning shifts help on busy sites.
Weather window: Apply on clean, dry substrates. Avoid rain risk and condensation. Follow temperature and humidity limits in the product data sheet.
Recoat and cure: Observe flash-off and recoat guidance from the TDS. Allow full cure before aggressive cleaning or handling.
2K handling: Mix accurately, respect pot life and dispose of waste responsibly. Use suitable PPE and ventilation.
Equipment: For aerosols, keep the can warm, shake thoroughly and maintain a wet edge. For tins, use compliant spray gear or mini-roller and fine foam for edges.
Coverage and finish: Apply light, even passes. Build film gradually for uniform sheen and durability.
Aftercare: Protect fresh coatings from tape pull, impact and wash-down until cured. Provide the client with basic cleaning guidance.
Repeatability: Batch codes are recorded so future top-ups can be mixed to the same colour and sheen for consistent touch-ins.

Suitable for a wide range of substrates when paired with the correct primer. Delivers smooth flow, reliable adhesion and long-term colour stability under normal service conditions.

Need a quick steer on spec or sheen? Tap the info icons beside Size, Paint Type and Gloss Level, or send us a message. For a faster reply, contact us on WhatsApp .

Safety Data Sheets

Customer Reviews

Samuel T.

★ ★ ★ ★ ★

Good result on an outdoor bench. ...read more

20 May 2024

Lewis A.

★ ★ ★ ★ ★

Worked well on a radiator refresh. ...read more

07 Nov 2024

Sasha K.

★ ★ ★ ★ ★

Handled tricky corners around door furniture. ...read more

05 Dec 2022

Frequently Asked Questions

1K: Ready to use. Great for lighter-duty jobs and quick touch-ups.
2K: Built-in hardener in the can for superior chemical/abrasion resistance on demanding surfaces.
2K Air-Dry: 2K performance with a non-isocyanate hardener—easier handling, no separate activator.

Note: Our 2K aerosols are supplied as Acrylic Enamel only.

Good prep is essential: clean, degrease and lightly key the surface. Use the correct primer for the substrate:

Plastics: use a plastic adhesion primer (see our plastic primer).
Glass/Fibreglass: use appropriate glass/fibreglass primers.
Metals: use metal/etch primers; bare steel should be protected promptly.

1K: Light passes; recoat after ~10–15 mins. Typically cures in ~30 mins (conditions dependent).
2K: Recoat after ~20–30 mins. Touch-dry ~40 mins; full cure 24–48 hrs.

Temperature and humidity affect all drying/curing times—test first on a small area.

A 400 ml aerosol typically covers up to ~2 m² per coat on smooth, primed surfaces. Expect 2–4 coats depending on colour, surface profile and the shade you’re covering.

Shake for 2–3 minutes and intermittently during use.
Spray 15–25 cm from the surface in light, even passes; overlap each pass slightly.
Keep the can upright; clear the nozzle with a short burst after use.
Use our vari-nozzle’s wide/narrow fan to suit the area and reduce overspray.

Only with excellent ventilation and appropriate PPE (respirator, gloves, eye protection). Protect surrounding areas from overspray. See our data sheets for details:

Please note – Our aerosol cans, litre tins and touch up and repair pots/pens are custom mixed and should be tested before application. We do not take responsibility for any colour difference once you have applied the paint to your surfaces. If the colour is not accurate, please contact us to arrange a return.