Thorndown Black Stain Blocking Primer 2.5L - Black
Best current price£44.00from Homebase
Best offers
Shopping.co.uk recommended and popular offers
Homebase£44.00Visit shop Thorndown Paint Thorndown Black Stain Blocking Primer 2.5L
Visit shopHomebase£44.00Visit shop All Offers
3 offers from £44.00
View price history by clicking the chart icon.
HomebaseThorndown Paint Thorndown Black Stain Blocking Primer 2.5L
Free delivery in 1–3 days
£44.00
Visit shop
wilkoThorndown Paint - Stain Blocking Primer - Black - 2.5L
Free delivery in 1–3 days
£44.00
Visit shop
Thorndown Black Stain Blocking Primer 2.5L - Water-Based Tannin & Sap Blocker for Wood - Interior/Exterior Use - WhiteFree delivery in 1–3 days£44.00Visit shop →
Product Information
Full details
This Thorndown Black Stain Blocking Primer is for DIYers and professionals working on timber surfaces, offering superior tannin and stain blocking for a flawless finish. Its primary benefit is preventing bleed-through, ensuring vibrant topcoats, though it requires proper surface preparation for optimal adhesion.
All features
| Colour | Black |
|---|---|
| Brand | Thorndown Paint |
Extended Product Information
FAQs
What types of wood can I use this primer on?
This primer is suitable for all untreated softwood and hardwood timber surfaces, including pine, cedar, redwood, plywood, MDF, and hardboard.
How long does it take to dry?
In fine weather, the primer dries in approximately one hour. Drying times can vary based on temperature, humidity, and airflow.
Can I use this primer outdoors?
Yes, its water-based, low-VOC formula makes it suitable for both interior and exterior applications.
Do I need a second coat?
Typically, only one coat is needed. However, a second coat is recommended for particularly resinous, knotty woods, or surfaces with high tannin bleed.
What kind of paints can I apply over this primer?
It is designed for use with Thorndown’s UV clear and translucent wood tones, and semi-opaque colours. It also acts as a great base for other compatible water-based topcoats.
How should I clean my brushes after use?
Clean brushes and equipment immediately after use with water.
What is the pack size?
This product is available in a 2.5L pack size.
Troubleshooting
Primer not blocking stains effectively
Ensure the timber surface was completely dry and free of contaminants before application. For particularly troublesome wood, apply a second coat of primer.
Slow drying time
Drying times are dependent on temperature, humidity, and airflow. Ensure adequate ventilation and ideal weather conditions. Avoid application in damp or very cold environments.
Primer peeling or flaking
This may indicate poor surface preparation or application over a contaminated surface. Ensure the wood was clean, dry, and properly sanded if necessary before application.
Difficulty in achieving a smooth finish
Use a high-quality brush or roller suitable for water-based primers. Apply thin, even coats and avoid over-brushing. Ensure the surface is smooth before application.
Pros and Cons
Pros
- Excellent at blocking stubborn stains and tannins
- Quick drying time speeds up project completion
- Suitable for a wide range of timber types
- Low VOC content makes it environmentally friendlier and safer to use indoors
- Can be used for both interior and exterior projects
- Works well as a base for Thorndown's wood paints
Cons
- Primarily designed for untreated timber
- May require a second coat on highly knotty or resinous wood
- Specific compatibility mentioned for Thorndown paints; may vary with other brands
- Requires proper surface preparation for best results
Setup, Compatibility & Care
Setup:
- Ensure the timber surface is clean, dry, and free from dust, grease, and loose particles.
- For best adhesion, lightly sand any glossy or previously finished surfaces.
- Apply one generous coat using a brush or roller.
- Allow to dry for approximately one hour in good weather.
- Apply a second coat if necessary on highly resinous or knotty woods.
Compatibility:
- Suitable for all untreated softwood and hardwood timber surfaces.
- Compatible with pine, cedar, redwood, plywood, MDF, and hardboard.
- Designed for use with Thorndown’s UV clear, translucent wood tones, and semi-opaque wood paints.
Care:
- Store in a cool, dry place away from direct sunlight.
- Keep the container tightly closed when not in use.
- Clean brushes and equipment immediately after use with water.