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  • Primers & Preparation

Primers & Preparation

Filter by

Brands

crown trade
sadolin
sandtex
sandtex
zinsser

Finish

Cupboard
Matt
Undercoat
Woodfiller

Range

Crown Trade Aluminium Wood Primer
Crown Trade Full Undercoat
Crown Trade Protective Coatings High Build Micaceous Iron Oxide
Crown Trade Protective Coatings High Build Rust Inhibiting Metal Primer Undercoat
Crown Trade Red Oxide Primer
Crown Trade Universal Metal Primer
Fungicidal Wash
PX3 All Purpose Primer
PX4 All Purpose Primer
Ready Mixed Filler
Sadolin Woodfiller
Sandtex Trade Flexible Primer Undercoat
Sandtex Trade Rust Inhibiting Primer Undercoat

Size

250ml
1L
2.5L
5L
10L
500G

14 Products

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Woodfiller
Sadolin Woodfiller

More options available

Fill and prepare timber for painting

From

£9.54
£7.95 (excl.VAT)
Sadolin Woodfiller is a one pack filler for small repairs and defects.
250ml | 4 Colours
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Fungicidal Wash
Sandtex Fungicidal Wash

5L

Essential for exterior walls preparation

From

£25.80
£21.50 (excl.VAT)
Ready-to-use solution for the treatment of organic growth on exterior walls, paths and patios.
5L | 1 Colour
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Ready Mixed Masonry Filler
Sandtex Ready Mixed Filler

500G

Fill cracks and damaged masonry before painting

From

£16.20
£13.50 (excl.VAT)
Ready-to-use exterior filler for brick, render or stone.
500G | 1 Colour
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Flexible Primer Undercoat
Sandtex Trade Flexible Primer Undercoat

More options available

For use on exterior wood

From

£25.80
£21.50 (excl.VAT)
A high performance flexible primer undercoat providing the ideal base for long lasting Eggshell and Gloss finishes on exterior wood.
1L • 2.5L • 5L | 2 Colours
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Rust Inhibiting Primer Undercoat
Sandtex Trade Rust Inhibiting Primer Undercoat

2.5L

For unpainted metal surfaces

From

£52.80
£44.00 (excl.VAT)
Formulated for use on unpainted ferrous and non-ferrous exterior metal surfaces, including weathered or pre-treated galvanised steel.
2.5L | 1 Colour
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Zinsser Watertite Waterproofing
Zinsser Watertite Waterproofing

10L

Very low odour. Contains a biocide that protects the dried coating against fungal degradation. Guaranteed for 5 years.

From

£220.96
£184.13 (excl.VAT)
Very low odour. Contains a biocide that protects the dried coating against fungal degradation. Guaranteed for 5 years.
10L | 1 Colour
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CrownTrade PX3 All Purpose Primer

1L

For problem surfaces

From

£21.00
£17.50 (excl.VAT)
Solvent based, adhesion promoting primer for interior & exterior use.
1L • 5L | 1 Colour
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Crown Trade PX4 All Purpose Primer

1L

Problem solver for interior and exterior use

From

£24.00
£20.00 (excl.VAT)
Water- based primer for difficult surfaces.
1L • 5L | 1 Colour
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Full Undercoat
Crown Trade Full Undercoat

More options available

A high quality undercoat for use over correctly prepared and primed joinery and metal.

From

£20.81
£17.34 (excl.VAT)
A high quality undercoat for use over correctly prepared and primed joinery and metal.
1L • 2.5L • 5L | 3 Colours
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Aluminium Wood Primer
Crown Trade Aluminium Wood Primer

2.5L

Designed for interior and exterior priming of hardwoods, resinous softwoods and wood treated with wood preservative.

From

£72.92
£60.77 (excl.VAT)
Designed for interior and exterior priming of hardwoods, resinous softwoods and wood treated with wood preservative.
2.5L | 1 Colour
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Red Oxide Primer
Crown Trade Red Oxide Primer

5L

An economical red oxide paint specially formulated for the protection of interior and exterior metalwork.

From

£142.48
£118.73 (excl.VAT)
An economical red oxide paint specially formulated for the protection of interior and exterior metalwork.
5L | 1 Colour
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Universal Metal Primer
Crown Trade Universal Metal Primer

1L

For ferrous and non-ferrous metals

From

£33.31
£27.76 (excl.VAT)
A top quality metal primer for use on most ferrous and non-ferrous metals, alloys and suitably prepared galvanised steelwork.
1L • 5L | 1 Colour
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Exterior Primers & Preparation for Long-Lasting Protection

Exterior primers and preparation products are essential for ensuring paint adheres properly and performs in harsh weather conditions.

At Crown Decorating Centres, you’ll find a comprehensive range of exterior primers, stabilisers, and preparation products designed for use on masonry, wood, and metal surfaces.

Primers create a strong bond between the surface and the topcoat while sealing porous materials and improving durability.

Proper preparation helps prevent common issues such as peeling, flaking, and moisture damage—ensuring your exterior paint system lasts longer.

 

Choosing the Right Exterior Primer

Exterior surfaces are exposed to rain, UV rays, and temperature changes, so selecting the right primer is critical.

Use masonry stabilisers or primers on chalky or porous surfaces to create a sound base before painting.

For exterior wood, primers help seal the surface and prevent moisture ingress, while metal primers protect against rust and corrosion.

Many exterior primers are formulated to remain flexible, allowing them to expand and contract with changing conditions without cracking.

 

Types of Exterior Primers & Preparation Products

  • Masonry Primers & Stabilisers: Seal and stabilise exterior walls before painting
  • Wood Primers: Protect timber and improve adhesion for topcoats
  • Metal Primers: Provide rust protection and strong adhesion
  • Multi-Surface Primers: Suitable for a range of exterior substrates
  • Surface Prsparation products: Includes cleaners, fillers, and treatments to ensure surfaces are ready for painting

Recommended for Exterior Projects

  • Masonry & Render: Use stabilising primers before applying masonry paint
  • Exterior Woodwork: Prime doors, windows, and cladding for long-lasting protection
  • Metal Surfaces: Apply anti-rust primers before painting railings, gates, and structural metal
  • Weathered Surfaces: Prepare thoroughly to ensure maximum adhesion and durability

 

For best results, pair with high-performance coatings from our Paint range, including masonry and exterior trim paints. Complete your project with products from our Tools and Preparation categories.

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