NBS Source
Merlin Barrier Coat

Description

A durable solvent free epoxy coating system specially formulated for use as a water resistant membrane in both new build and refurbishment projects. It can be applied directly onto wet surfaces free from standing water when used as a primer and, when allowed to cure, will accept most adhesives, coatings and screeds. Barrier Coat has been tested and certified to meet BS 476 surface spread of flame, Class 0 and has been assessed by the Building Research Establishment for water vapour permeability.


Features and benefits:

  • No harmful solvents.
  • Penetrates into wet substrates.
  • Fire retardant.
  • Very high water vapour resistance.
  • Excellent adhesion to wet concrete.
  • Will tolerate lightly contaminated substrates.


Life expectancy:

Barrier Coat is a permanent membrane to control the transmission of water vapour from the base slab and subject to there being no future structural movement, cracking, physical or mechanical damage will protect for the life of the floor.

Fire protection:

When fully cured and applied using the correct coverage rates and application methods, Barrier Coat will give Class 0 Surface Spread of Flame fire protection as tested by Warrington Fire Research, January 2004. Test reports WARRES numbers 136762 and 136763.

Vapour permeability:

Barrier Coat when applied at the recommended minimum film thickness will give a Water Vapour Transmission rate of less than 2 milligrams per m², per 24 hours, as tested to BS EN ISO 7783-1 by the Building Research Establishment Ltd, February 2005, test report 219725/R1.

Water permeability:

When tested using a Karsten permeability test all samples gave a nil result, Barrier Coat applied at the recommended film thickness is classified as impermeable.

General information

Uniclass 2015

Pr_35_31_06_80 Smoothing and levelling underlay compoundsPrimary

CAWS

J30/10 Cold-applied damp-proofing

J30/130 Cold-applied damp-proofing

Product range

DPMs and Barrier Coats

Specification data - Smoothing and levelling underlay compounds Enhanced data

Material

Epoxy resin compound.

Fire protection

Class 0.

Vapour Permeability

>2 mg/m² (24 hours).

Water permeability

Impermeable.

When applied at the recommended film thickness.

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