Gripset Xpress H2O Plus Primer

Xpress Primer H2O Plus is a fast-drying, water-resistant primer that acts as a vapour barrier on damp concrete and mineral surfaces. It enhances adhesion for various finishes and prevents carbonation of concrete, making it an essential preparatory step for many construction projects.
Vendor: Gripset
Availability: In Stock

Physical Properties

Form: Thin liquid
Colour (wet): White
Colour (dry): Clear
Colour (transition): Slight green when drying
Drying time: 1 hour (at 23°c & 50% rh)
Specific gravity: 1kg/litre
Packaging: 10litre pails
Shelf life: 12 months in unopened container

Shipping & Delivery

$15.95 shipping on all orders nationwide for most products

Gripset Xpress H2O Plus Primer

Vendor: Gripset

Gripset Xpress H2O Plus Primer


Vendor: Gripset

Gripset Xpress H2O Plus Primer


Xpress Primer H2O Plus is a unique, one-component vapour barrier primer designed for concrete, screeds, and mineral surfaces. It protects against moisture-related issues like blistering and delamination, while also enhancing adhesion for subsequent coatings and finishes. This fast-drying primer changes colour as it dries, indicating readiness for overcoating in just one hour. Unlike traditional vapour barriers, Xpress Primer H2O Plus does not alter surface properties, ensuring optimal bonding with Gripset membranes, adhesives, and other finishes.

Key Features

  • One-component vapour barrier primer
  • Suitable for damp and green concrete and mineral substrates
  • Fast drying (ready for overcoating in 1 hour)
  • Water-resistant
  • Unique colour-changing formula
  • Reduces efflorescence on screeds and renders
  • Compatible with Gripset membranes and various finishes
  • Economical coverage (up to 1 litre/8m²)
  • Can be used as an exposed protective sealer
  • Suitable for internal and external use


  • Creating a vapour barrier on concrete, masonry, renders, and screeds
  • Protecting against moisture-related issues in flooring and tiling installations
  • Enhancing adhesion of membranes, adhesives, and finishes
  • Preventing carbonation and degradation of concrete
  • Reducing efflorescence on screeds and renders


  • Protects against moisture damage and ensures long-lasting adhesion
  • Can be applied on damp surfaces, speeding up project timelines
  • Fast-drying for efficient application
  • Versatile for use on various substrates and with different finishes
  • Improves durability and longevity of concrete and other mineral surfaces
  • Easy to apply by brush, roller, or spray

Application Guide

  1. Prepare surfaces thoroughly, ensuring they are structurally sound, smooth, clean, and free of contaminants. Repair any defects as needed.
  2. For highly burnished or dense concrete, roughen the surface by grinding or etching.
  3. Apply one coat of Xpress Primer H2O Plus at a coverage rate of 1 litre per 6-8m² using a brush, roller, or airless spray.
  4. If the surface is non-porous (water droplets do not absorb), prepare it by grinding or etching before priming.
  5. Allow the primer to dry until it turns clear and tack-free before overcoating.


  • Not suitable for use as a vapour block primer in areas with continuous rising damp or negative hydrostatic pressure.
  • Not recommended for use on vertical surfaces as a negative hydrostatic coating.
  • Do not apply if rain is imminent or when surface temperatures are below 5\u00b0C or above 30\u00b0C.
  • Only suitable for concrete and mineral surfaces. Protect glazed, plastic, and metal elements during application.

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