For concrete & masonry

Aqua Block®

Moisture blocking coating

Stop water. Protect concrete. Last longer.

For concrete basement belts, concrete door frames and concrete window frames. AQUA BLOCK forms a durable protective barrier that prevents moisture migrating out of concrete into the walls beside it, reducing dampness and the damage that follows.

  • 1 Litre
  • 24-month shelf life
  • Direct apply
  • 2 coats
A gloved hand brushing dark protective coating along a grey concrete plinth belt, the coated half satin and the uncoated half chalky
Applied to the concrete belt before the wall finish goes on.

Product description

A separation layer between concrete and wall

PRIME GUARD AQUA BLOCK is a high-performance moisture-blocking coating developed specifically for concrete basement belts, concrete door frames and concrete window frames. It forms a durable protective barrier that helps prevent moisture migration from concrete surfaces into adjacent walls, reducing dampness and moisture-related damage.

The coating is designed to create a separation layer between concrete and masonry, helping protect paint, plaster and wall finishes from moisture penetration.

How Aqua Block works

  • It penetrates and bonds to the concrete surface, forming a continuous waterproof barrier rather than a film that sits on top.

  • On basement belts, door frames and window frames, that barrier blocks moisture movement through the concrete and reduces water penetration from the surrounding areas.

  • Keeping water out helps maintain structural integrity and reduces the risk of dampness-related damage to the finishes around it.

“Direct apply”: suitable for

  • Concrete basement belts
  • Concrete door frames
  • Concrete window frames
  • Concrete beams
  • Concrete columns
  • Masonry contact areas
  • Damp-prone concrete surfaces
Water beading into spheres on a coated dark surface instead of soaking in
Water beads on the cured film instead of wetting the concrete.

Key benefits

What you get from it

  • Blocks moisture transfer
  • Helps prevent wall dampness
  • Waterproof barrier protection
  • Long lasting durability
  • Strong adhesion to concrete
  • Reduces moisture-related damage
  • Easy application
  • New construction & renovation

Application

Two coats, one working day

  1. 1

    Prepare the concrete

    Make sure the surface is clean, dry and free from dust, grease, oil, rust and loose particles. Repair cracks or damaged concrete before you start.

  2. 2

    Stir, then apply the first coat

    Stir well before use. Brush or roller an even first coat of PRIME GUARD AQUA BLOCK directly onto the concrete.

  3. 3

    Wait 2–3 hours, apply the second coat

    Let the first coat dry for 2–3 hours to recoat, then apply the second coat over it.

  4. 4

    Allow 5–8 hours for hard dry

    Wait 5–8 hours for a hard dry, and allow complete curing before the surface is exposed to water. Keep the container tightly closed after use.

Do not

  • Apply on standing water.
  • Apply during rain.
  • Expose the surface to water before it has cured completely.
  • Coat over cracks or damaged concrete that has not been repaired.

Timings

Recoat after
2–3 hrs
Hard dry
5–8 hrs
Coats
2
Full application guide

Technical

Specification & safety

Specification

Product
PRIME GUARD AQUA BLOCK®
Type
Moisture blocking coating
Substrate
Concrete & masonry contact areas
Application
Direct apply, brush or roller
Coats
2
Recoat interval
2–3 hours
Hard dry
5–8 hours
Coverage
Varies with surface condition, roughness & applied thickness
Net content
1 Litre
Shelf life
24 months from manufacture, unopened
Storage
Cool, dry place away from direct sunlight

Safety precautions

  • Avoid contact with eyes and skin.
  • Use in a well-ventilated area.
  • Wear goggles, a dust mask and gloves.
  • Do not breathe in vapour or spray.
  • Keep out of reach of children.
  • Close the container tightly after use.

Produced & marketed by EB International, 21/839.B, Tanur, Malappuram, Kerala. Each tin carries a QR code that resolves to its batch reference number.

Stop water • Protect concrete • Last longer

Specify Aqua Block on your next slab

Ask us about project quantities, dealer supply, or where the barrier belongs on your drawings.