Thorndown Grey Stain Blocking Primer 750ml - Grey
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Thorndown Grey Stain Blocking Primer - 750ml - Water-Based - Interior/Exterior UseFree delivery in 1–3 days£22.00Visit shop →
Product Information
Full details
The Thorndown Grey Stain Blocking Primer is designed for DIY enthusiasts and professional painters working on timber projects who need to ensure a smooth, uniform finish. Its key benefit is effectively blocking common wood stains and resins, preventing them from bleeding through topcoats. A potential consideration is its water-based formula, which may require specific application conditions for optimal drying.
All features
| Colour | Grey |
|---|---|
| Brand | Thorndown Paint |
Extended Product Information
FAQs
What types of wood can I use this primer on?
This primer is suitable for all untreated softwoods and hardwoods, including pine, cedar, redwood, plywood, MDF, and hardboard.
Can I use this primer indoors?
Yes, the primer is low-VOC and suitable for both interior and exterior applications.
How long does the primer take to dry?
Under good weather conditions, it dries in approximately one hour. Drying times may be longer in cooler or more humid environments.
Do I need multiple coats?
One coat is usually sufficient. However, a second coat might be beneficial for woods that are exceptionally resinous or have many knots.
What finishes can I apply over this primer?
It is ideal for use under Thorndown's UV clear and translucent wood tones, as well as semi-opaque colours. It can also be used under other water-based finishes.
How should I clean my tools after use?
Clean brushes and tools immediately after use with warm water and soap.
What is the pack size?
The primer is available in a 750ml pack size.
Troubleshooting
Primer not blocking stains effectively
Ensure the surface was clean and dry before application. A second coat may be necessary for exceptionally resinous or knotty woods. Allow adequate drying time between coats.
Slow drying time
Drying time is dependent on temperature and humidity. Avoid application in very cold, damp, or humid conditions. Ensure adequate ventilation.
Uneven finish after topcoat
Ensure the primer was applied evenly and allowed to dry completely. Check that the topcoat is compatible with the primer and applied according to its instructions.
Pros and Cons
Pros
- Excellent at preventing bleed-through from wood resins and tannins.
- Suitable for a wide range of wood types and projects.
- Fast drying time allows for efficient workflow.
- Low-VOC formulation is beneficial for interior use.
- Can be used with various Thorndown finishes.
Cons
- May require a second coat on particularly knotty or resinous woods.
- Performance can be affected by humidity and temperature during application.
- Primarily designed for use with Thorndown finishing products.
Setup, Compatibility & Care
Preparation: Ensure all timber surfaces are clean, dry, and free from dust, grease, and loose material. Sand any rough surfaces smooth and wipe clean.
Application: Apply a thin, even coat using a brush or roller. For best results, apply in dry conditions with temperatures between 10°C and 25°C.
Drying: Allow approximately one hour for drying before applying a topcoat. Re-coat if necessary, particularly on woods with heavy resin content or prominent knots. Allow longer drying times in damp or cold conditions.
Compatibility: Compatible with all Thorndown wood stains and colours. Can also be used as a primer under other water-based finishes. Not recommended for use under solvent-based topcoats.
Care: Store the primer in a cool, dry place, away from direct sunlight and frost. Ensure the lid is tightly sealed when not in use. Clean brushes and tools immediately after use with warm water and soap.