Crown Trade Primer Undercoat White

Crown Trade Primer Undercoat – White

Crown Trade Primer Undercoat in White is a high-quality oil-based primer and undercoat designed to prepare surfaces for a durable, professional topcoat. Suitable for both interior and exterior use, it creates a smooth, even base that improves adhesion and enhances the final finish. Ideal for trade and professional decorating, this product helps ensure long-lasting results across a wide range of projects.

Reliable Oil-Based Performance

Applied by brush, this oil-based formulation offers excellent coverage and a strong foundation for subsequent paint layers. Once applied, it becomes touch dry in 4–6 hours and is ready for recoating after 16–24 hours, allowing adequate time for proper curing and performance.

Application Conditions & Guidance

For best results, do not apply if air or surface temperatures are expected to fall below 8°C, or if relative humidity exceeds 80% during application or drying. Applying under suitable conditions helps achieve optimal drying, adhesion, and finish quality.

Available Sizes

1 Litre 2.5 Litres 5 Litres

FAQs

What is Crown Trade Primer Undercoat used for?

It is used to prime and undercoat surfaces before applying a topcoat, improving adhesion and ensuring a smoother, longer-lasting finish.

Can this primer undercoat be used outside?

Yes, it is suitable for both interior and exterior use, provided it is applied under the correct temperature and humidity conditions.

How long should I wait before applying the topcoat?

The surface should be left for 16–24 hours before recoating or applying the final finish.

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At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
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Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.