How to Cover Stubborn Stains with SPO Shellac Stain & Odour Blocker

Quick Highlights

• How to Seal pen, marker, grease, and more
• Dries in ~30 minutes
• Suitable for plaster, wood, brickwork, and certain plastics
• Great for quick DIY fixes or larger premises

Introduction

Understanding Stubborn Stains

From permanent marker scribbles to old grease spots, stubborn stains can reappear without a dedicated blocking primer. They’re frequently found on walls, furniture, or high‑use surfaces.

Why Conventional Paints Fail

Ordinary primers struggle with oil-based or pigment-rich stains like ink, marker, or grease. These often penetrate through, ruining fresh paint jobs.

SPO Shellac Stain & Odour Blocker: The Go‑To Solution

SPO Shellac’s formula creates a near‑impermeable barrier over tough stains. By sealing the stain at its source, it prevents bleed‑through and ensures a clean, long‑lasting finish.

How to Cover Stubborn Stains

Surface Prep

• Clean away any loose debris or oily residue
• Clean the effected area thoroughly
• Lightly sand glossy areas
• Ensure the surface is dry

Priming

• Stir SPO Shellac Stain & Odour Blocker thoroughly
• Apply a thin, even coat with a brush or short pile roller
• This paint dries extremely quickly, so work fast. Avoid leaving the tin or brushes exposed to prevent them from drying out
• Methylated spirits will be needed to clean any tools used

Dry & Finish

• Wait ~30 minutes for the primer to dry
• If needed, apply a second coat
• Topcoat with your preferred paint or finish

This image illustrates the remarkable coverage provided by SPO Shellac Stain & Odour Blocker on a coffee stain. One side remains untreated, clearly showing how the stain bleeds through the topcoat, while the treated side demonstrates a clean finish, with the coffee stain effectively sealed and concealed.

Further Reading

• Read our main blog on SPO Shellac Stain & Odour Blocker for more details
• View the product here: SPO Shellac Stain & Odour Blocker

Contact Us

Our technical team includes qualified paint inspectors with extensive manufacturing and supply knowledge. We're here to support you—whether you need advice, help with this product, or guidance on other paint projects.

• Live Chat: On our website (bottom‑right corner)
• Phone: 01482 222421
• Email: info@specialistpaintsonline.co.uk
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