Dulux Trade Weathershield Exterior Undercoat - Dark Grey - 2.5L

Part 2 of a 3 part weather-resistant and flexible paint system specifically developed to give long...

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This guide is for DIYers and professional decorators looking for a durable, weather-resistant paint solution for exterior woodwork. The Dulux Trade Weathershield Exterior Flexible Undercoat offers long-lasting protection and excellent flexibility, flexing with the wood to prevent cracking. A key caveat is its solvent-based nature, requiring specific preparation and application methods, and it's part of a three-part system for optimal results.

All features

ColourGrey
Model Part Number5180412
BrandDulux Trade

Extended Product Information

FAQs

What is this product?

This is Dulux Trade Weathershield Exterior Flexible Undercoat, Part 2 of a 3-part system designed for weather-resistant and flexible protection of exterior woodwork and primed metal.

How long does the protection last?

When used as part of the full Weathershield exterior paint system, it provides up to 8 years of weathering durability.

Can I spray this paint?

No, for health and safety reasons related to solvent-based paints, spray application is not recommended. It is intended for brush application only.

What surfaces can I use this on?

It is suitable for primed woodwork and primed metal surfaces such as garage doors.

How much area does one litre cover?

Coverage is up to 16m² per litre on most surfaces.

What is the drying time?

The minimum drying time is 2 hours. You can recoat after a minimum of 6 hours, or within 8 hours.

How do I clean my brushes after use?

After use, remove as much paint as possible from brushes before cleaning with brush cleaner or White Spirit.

Is this paint suitable for indoor use?

No, this product is specifically designed for outdoor use and is not suitable for indoor applications.

Troubleshooting

Paint cracking or peeling

Ensure proper surface preparation and that the product is used as part of the full 3-part Weathershield system. Check for excessive wood movement or moisture issues.

Poor adhesion

Verify that the surface was clean, dry, and properly primed before application. Ensure no contaminants were present on the surface.

Uneven finish or poor coverage

Ensure the paint was stirred thoroughly before application. Apply paint evenly, avoiding over-application or under-application. An additional coat may be necessary for very porous surfaces or significant colour changes.

Difficulty cleaning brushes

Clean brushes immediately after use with appropriate brush cleaner or White Spirit. Ensure as much paint as possible is removed before cleaning.

Pros and Cons

Pros

  • Provides long-lasting protection with up to 8 years durability as part of a system.
  • Flexes with wood to prevent cracking, ensuring a more stable finish.
  • Offers good build and excellent opacity for a solid foundation.
  • Can be applied to primed metal surfaces, expanding its use cases.
  • Good coverage rate of up to 16m² per litre.

Cons

  • Requires application as part of a specific 3-part system for full benefits.
  • Solvent-based formulation necessitates appropriate ventilation and cleanup methods.
  • Spray application is not recommended due to health and safety considerations of solvent-based paints.
  • Requires specific surface preparation, especially for new or previously treated wood.
  • Not suitable for indoor use.

Setup, Compatibility & Care

Surface Preparation: Ensure all surfaces are sound, clean, and dry before application. Treat any mould, lichens, or algae with a suitable fungicidal wash. For new or bare wood, a coat of Dulux Trade Weathershield Preservative Primer+ (Part 1) is recommended.

Application: This product is for brush application only. Stir thoroughly before use. Apply one coat of the appropriate coloured Weathershield Exterior Flexible Undercoat to primed wood. Apply a second coat of the undercoat overall. Follow with a coat of Weathershield Exterior High Gloss (Part 3). Additional coats may be needed for strong colour changes.

Compatibility: Suitable for use on primed wood and primed metal surfaces.

Drying: Minimum drying time is 2 hours. Recoat within 6 to 8 hours. Maximum drying time is 6 hours between coats.

Tool Cleaning: After use, remove excess paint from brushes before cleaning with brush cleaner. Use White Spirit for dilution if necessary and for cleaning tools.

Storage: Store in a cool, dry place. Do not store or use in extreme temperatures and protect from frost.