Is it suitable for metal, plastic, wood and uPVC?

Yes, with proper preparation and the correct primer for each substrate. Use plastic adhesion primers for plastics/uPVC, metal or etch primers for metals, sealing/priming for wood, and dedicated primers for glass or fibreglass.

How much will I need (coverage & coats)?

As a guide, a 400 ml aerosol covers up to approximately 2 m² per coat on a smooth, primed surface. Most projects need 2–4 coats depending on colour, surface profile and what is being covered.

How long does it take to dry and fully cure?

For 1K, recoat after about 10–15 minutes; typical cure is around 30 minutes depending on conditions. For 2K, recoat after about 20–30 minutes; touch-dry is roughly 40 minutes and full cure is usually 24–48 hours.

Can I use it outdoors and will the colour fade?

Yes, provided correct preparation and priming. Add UV Protection to help maintain colour on sun-exposed surfaces and consider a High-Resistance package for coastal or high-wear areas.

RAL 7040 Window Grey Aerosol Spray Paint 400ml

Buy RAL 7040 Window 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 7040 Window Grey Aerosol Spray Paint

Manufacturer: One Stop Aerosols

Product Code: RAL171

Price: £7.99 – £69.99

Availability:In Stock

RGB Colour Code: 152-158-161

Hexadecimal Colour Code: #989EA1

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

About Our Paint Systems

RAL 7040 Window Grey Aerosol Spray Paint forms part of the RAL Classic Aerosol Spray Paint Colour Chart. Each order is batch mixed to specification using premium Lechler binders and colourants, helping you achieve consistent colour across aerosols and tins.

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% - choose the sheen that fits your application.
Extras: Optional UV protection for exterior projects, or a High-Resistance package for coastal and demanding environments.
Control: Adjustable vari-nozzle cap for wide or narrow fan patterns, with HVLP-style atomisation and low overspray.

The Lechler-based system provides smooth flow, excellent adhesion and long-term colour stability across a wide range of substrates. Use the appropriate primer where required.

Helpful tip: Not sure which paint type or gloss level to select? Tap the info icons next to Size, Paint Type and Gloss Level, or send us a message. For a quicker reply, message us on WhatsApp .

Safety Data Sheets

Customer Reviews

Beth A.

★ ★ ★ ★ ★

Great help on WhatsApp choosing gloss level. ...read more

24 May 2025

Damien H.

★ ★ ★ ★ ★

2K Air Dry was perfect for our railings. ...read more

19 Jul 2025

Erin S.

★ ★ ★ ★ ★

Plastic primer plus 1K topcoat worked great. ...read more

25 Mar 2024

Frequently Asked Questions

RAL 7040 Window Grey Aerosol Spray Paint is a custom-mixed aerosol spray paint colour from our RAL Classic Aerosol Spray Paint chart. It’s supplied in 400 ml 1K or 2K aerosols (2K has a built-in hardener), litre tins, plus touch-up pots/pens. Choose finishes from Matt 0% to Full Gloss 90%.

Yes—prepare properly and use the right primer for each substrate:

Plastics/uPVC: use a plastic adhesion primer (see our plastic primer).
Metals: use metal/etch primers; protect bare steel promptly.
Wood: seal/prime to prevent absorption and improve adhesion.
Glass/Fibreglass: use dedicated glass/fibreglass primers.

2K aerosols include a hardener for superior chemical and abrasion resistance—ideal for high-traffic or demanding environments. 1K is convenient and great for lighter-duty tasks or quick repairs.

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

As a guide, a 400 ml aerosol covers up to ~2 m² per coat on a smooth, primed surface. Most projects look best with 2–4 coats, depending on colour, surface profile and what you’re covering.

1K: Recoat after ~10–15 mins; typical cure ~30 mins (conditions dependent).
2K: Recoat ~20–30 mins; touch-dry ~40 mins; full cure 24–48 hrs.

Temperature/humidity affect results—always test first.

Yes—prep correctly and consider add-ons for longevity:

UV Protection: helps maintain colour on sun-exposed surfaces.
High-Resistance package: extra toughness for coastal or high-wear areas.

Spray in a mild, dry environment—ideally 10–25 °C with low humidity and steady airflow. Avoid very cold, hot or damp conditions which can slow drying or cause defects.

For safety and handling, see our data sheets: 1K · 2K/2K Air-Dry.

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.