Dulux Weathershield QD Exterior Undercoat

Description

Dulux Weathershield Quick Dry Exterior Undercoat – Fast-Drying Base Coat for External Surfaces

Dulux Weathershield Quick Dry Exterior Undercoat is a professional-grade primer and undercoat designed to prepare and stabilise exterior wood, metal and masonry surfaces ahead of topcoats. Engineered for the UK climate, this quick-dry undercoat provides excellent adhesion, improved coverage and fast drying times, helping your decorative system resist the effects of weather and deliver long-lasting performance.

Whether you’re painting timber cladding, external joinery, fascias or masonry, Dulux Weathershield Quick Dry Exterior Undercoat acts as a reliable foundation for your exterior paint system.

Key Features & Benefits

• Quick-dry formulation – Dries rapidly, speeding up exterior decoration projects.

• Improves topcoat adhesion – Helps finish coats bond securely to prepared substrates.

• Excellent coverage – Delivers a uniform base that enhances topcoat colour depth.

• Weather-resistant performance – Designed to support Dulux Weathershield topcoats in challenging exterior conditions.

• Multi-substrate compatibility – Suitable for timber, properly primed metal and exterior masonry.

• Professional quality finish – Helps achieve a smooth, consistent topcoat application.

This undercoat is an essential step when preparing surfaces for exterior gloss, satin or eggshell finishes.

Where to Use Dulux Weathershield Quick Dry Exterior Undercoat

This exterior undercoat is suitable for:

• External woodwork (e.g., cladding, window frames, fascia boards)

• Prepared metal surfaces (once primed)

• External masonry and brickwork

• Garden structures such as sheds and outdoor trim

For bare metal surfaces, follow with a suitable metal primer from our wood & metal primers range before undercoating. For new or bare timber, start with a wood primer where required.

Technical Specifications

*Coverage figures are approximate and will vary depending on surface condition and application technique.

How to Apply – Best Practice Guide

1. Surface Preparation: Remove loose paint, dirt, grease and rust. Sand surfaces smooth and remove dust prior to application.

2. Prime Bare Surfaces: On bare wood, use a wood primer; on bare metal use a metal primer to ensure optimal adhesion.

3. Stir Thoroughly: Mix the undercoat before use and occasionally during application.

4. Apply Even Coats: Use quality brushes or rollers from our exterior paint brushes & rollers range for an even finish.

5. Drying & Topcoat: Allow the recommended dry time before applying your chosen Dulux Weathershield topcoat for complete protection.

Applying this undercoat correctly helps enhance topcoat performance, colour intensity and long-term durability of your exterior finish.

Also available are the top coats – Dulux Weathershield QD Exterior Satin 750ml and Dulux Weathershield Exterior Gloss 750ml