✅ Features & Benefits:

💧 Seals Damp & Stains – Blocks moisture and prevents peeling, ideal for internal wall damp protection.
🖌️ Easy Application – Applies smoothly with brush or roller for quick, even coverage on interior surfaces.
🪵 Multi-Surface Use – Perfect for wood paint seal, plaster, brick, and more.
🏠 Ideal for Indoor Waterproofing – Designed for waterproofing walls interior and internal waterproofing jobs.
✔️ Trusted Blackfriar Quality – A reliable choice for lasting dampseal, backed by proven wood treatments.

🧱 Product Description

Blackfriar Dampseal (CF-W0M3-6B7N) is a powerful interior wall sealant designed to block damp and seal surfaces before decorating. Ideal for internal waterproofing, it protects walls and ceilings from moisture, stains, and peeling paint. Whether you're tackling waterproofing inside the house or sealing timber surfaces, this 500ml solution delivers professional results.

Use it for internal wall waterproofing, interior wall sealant, or as a clear paint sealer for wood—perfect for prepping damp-prone areas before painting. It's compatible with both brush and roller application and suitable for use on wood, plaster, concrete, and masonry.

Trusted by decorators and DIYers alike, Blackfriar Dampseal is the go-to for wall seal, wood paint seal, and waterproofing walls interior projects.

Our Delivery Options

Express 2/4 Day Delivery

• Delivery Fee:
• Order By: 
• Delivery Time: Before 6pm Monday-Friday

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Next Business Day Delivery

• Delivery Fee:
• Order By: 
• Delivery Time: Before 6pm Monday-Friday

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Pre-12 Next Business Day Delivery

• Delivery Fee: £12.99 delivery for all pre-12 orders
• Order By: 
• Delivery Time: Before 12pm Monday-Friday

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Remote Areas Delivery

• Delivery Fee:
• Order By: 
• Delivery Time: Standard delivery (2-4 days)

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Weekend Delivery

• Delivery Fee:
• Order By:
• Delivery Time: Before 6pm Saturday

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Good To Know

For orders to some addresses, especially in the Highlands of Scotland and Offshore, next day delivery options are not available and delivery can take several days. Saturday delivery is not available for remote areas.

Items over 30kg: Items over 30kg can only be delivered from Monday to Friday. If ordered before 3pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.