SPO General Purpose Stain Block Primer | Multi Surface Stain Blocking Primer

• Finish / Texture: Matt white
• Base: Low-odour solvent-based primer/sealer
• Available Colours: White
• Pack Sizes: 1 L, 2.5 L
• Coverage: ~10 m²/L @ 35–40 µm DFT
• Drying Times @ 20 °C: Touch dry 30 min; hard dry 4 h
• Re-coat Interval: 4–6 h
• Minimum Application Temp.: 5 °C
• VOC Content: ≤ 500 g/L
• Flash Point: 36 °C (closed cup)
• Application Method: Brush or roller; do not thin; clean tools with Thinners 18 or low-odour white spirit
• Surface Suitability: Plaster, masonry, wood, metal (incl. galvanised), tiles, plastics, existing paint – interior & exterior
• Volume Solids: 41 %
• DFT/WFT: 35–40 µm DFT; 100 µm WFT
  

Need detailed specs or prep guidance? Chat with our experts now!

SPO General Purpose Stain Block Primer is the perfect solution for achieving a clean, blemish-free finish across a wide range of surfaces:

• Property Maintenance
  Ideal for landlords and facility managers dealing with unsightly water stains, nicotine marks, or grease spots in rental properties, communal areas, or commercial units.
• Hospitality & Retail
  Perfect for hotels, restaurants, and shops where appearance is paramount—quickly hiding stubborn stains on walls, ceilings, or decorative features.
• Leisure & Tourism
  Suitable for resorts, holiday parks, and public recreational areas requiring prompt, reliable stain blocking to maintain a fresh, welcoming look.
• DIY & Home Improvement
  A must-have for homeowners tackling patchy walls or nicotine-stained ceilings—achieve a pristine surface in less time.
• Industrial & Public Sector
  Excellent for schools, community centres, or industrial sites needing an effective primer on heavily marked walls, ensuring a long-lasting finish under demanding conditions.

If you need personalised advice on tackling difficult stains or preparing surfaces for topcoats, contact our experts now via the live chat for tailored guidance!

• Surface Prep: Clear away dust, grease, or flaking paint. Fill and sand any cracks or gaps.
• Application: Stir thoroughly. Apply evenly with a brush, roller, or spray—avoid puddling or thick edges.
• Drying/Curing: Wait 4–6 hours before applying your chosen topcoat; confirm dryness as needed.
• Maintenance: Store leftover primer in a cool, dry place; reseal container tightly for future use.
• Pro Tip: Lightly scuff glossy surfaces prior to priming for better adherence.

Need a step-by-step guide? Our experts are standing by—chat live now!

• “Completely sealed my ceiling’s water stains!” – Kevin R.
• “Ideal for yellow nicotine-marked walls. Dried fast, and the topcoat looks fantastic.” – Amanda T.

Have you used SPO General Purpose Stain Block Primer? Leave your review or chat with us for more tips!

Free Delivery on Orders Over £75: Stock up on everything you need in one go

• Topcoat Paints: Achieve the perfect finish once stains are locked away
• Degreasers & Cleaners: Prep surfaces to remove oily residues before priming
• Application Tools: Brushes, rollers, extension poles for even coverage

Ready to complete your kit? Chat with us for recommended extras!

1. What is SPO General Purpose Stain Block Primer used for?

This oil-based primer is designed to lock down water, nicotine, grease, and other persistent stains, preventing them from bleeding through into your final paint job.

2. Can I use it on both interior and exterior surfaces?

Yes. It’s formulated for versatile application on walls, wood, brick, and more—whether indoors or out.

3. How quickly can I apply the topcoat after priming?

You can typically apply your topcoat in just 4–6 hours, keeping your project moving forward without lengthy drying delays.

4. Does this primer really stop tough stains from coming back?

Absolutely. Its sealing formula ensures stains are contained beneath the primer, so they won’t reappear or discolour subsequent paint layers.

5. How much area does one litre cover?

The primer covers roughly 10 m² per litre, depending on the surface’s porosity and condition. Applying a thin, even coat helps maximise coverage and sealing effectiveness.

6. What application methods are recommended?

You can apply the primer with a brush, short pile roller, or spray. Make sure the surface is clean and dry for best results.

7. Do I need any special preparation before using this primer?

Remove loose or flaky paint, clean away dirt or grease, and ensure the substrate is thoroughly dry. For challenging stains, applying two thin coats can provide an extra layer of protection.

Need help dealing with stubborn stains or preparing a surface?

For personalised guidance or additional information, contact our experts now via live chat—we’re here to help you achieve a flawless finish!

Fast, Reliable & Flexible Delivery

Every order leaves our warehouse on a fully-tracked DX or FedEx service, so you can spend less time waiting and more time painting.

Delivery Options

• FREE Standard Delivery (orders £75+) – arrives in 2–3 working days
• Standard Delivery £7.95 – arrives in 2–3 working days
• Express Delivery £13.95 – next working day when you order before 12 am (Mon–Thur)
  Got a £75+ basket? Select “Express Upgrade” at checkout and only pay the difference.

Next-Day Despatch Promise

• Order before 12 am (Mon–Thurs) with express delivery → ships today & receive tomorrow.
• Order without express delivery → ships the next working day and receive the next working day after.
• Order Thursday without express delivery → ships Friday for Monday delivery.

We do not deliver on weekends & bank-holidays

What to Expect

• Upon purchasing, please provide a contact telephone number that the courier's can contact you on if they experience any issues.
• All orders usually require a signature upon delivery.
• If you are unlikely to be in during the day, consider having your order delivered to your place of work, or another business address where somebody will be able to accept and sign.

Outside UK Mainland?

Delivery prices shown cover UK Mainland addresses. If you’re ordering for the Highlands, Islands, Northern Ireland, or anywhere outside the mainland, just reach out—chat with us live, call 01482 222 421, or email info@specialistpaintsonline.co.uk—and we’ll give you a quick personalised quote.

Bottom line: order today, get it fast, track every mile, paint tomorrow.

Technical data sheet

Safety Data Sheet