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Application

  • Tanking of basements.
  • Water reservoirs.
  • Tunnels.
  • Swimming pools.
  • Lift pits.
  • Concrete pipes.
  • Shower walls and floors prior to tiling.

Masterseal 581 is not suitable for retaining water with a low calcium hardness or pH of less than 7.2 (refer to MasterSeal 588 for such applications) or for application to horizontal substrates which may be subject to freeze thaw cycles or vehicular traffic. If a skim coat finish is required use MasterEmaco N 5100 cement based fairing coat.

Description

MasterSeal 581, when mixed with water or a MasterSeal 600 water blend, provides a waterproof coating to concrete and masonry above and below ground level. It is applied to a minimum thickness of 2 mm in two coats by stiff brush, broom or spray.

Features and benefits:

  • Approved under regulation 31 of the Water Supply (Water Quality) regulations 2000.
  • BBA approved certificate no 89/2138/5th issue.
  • Simple and rapid application.
  • Water vapour permeable.
  • Allows substrate to dry out.
  • Bonds with damp substrates (concrete and masonry) becoming an integral part of the substrate thereby overcoming hydrostatic pressure.
  • No solvent.

Applications:

  • Tanking of basements.
  • Water reservoirs.
  • Tunnels.
  • Swimming pools.
  • Lift pits.
  • Concrete pipes.
  • Shower walls and floors prior to tiling.

Masterseal 581 is not suitable for retaining water with a low calcium hardness or pH of less than 7.2 (refer to MasterSeal 588 for such applications) or for application to horizontal substrates which may be subject to freeze thaw cycles or vehicular traffic. If a skim coat finish is required use MasterEmaco N 5100 cement based fairing coat.

General information
Color

grey or white

Features

Reg 31 approved for use in contact with potable water . Brush or spray applied to damp concrete . Resists postive and negative proessure .Available in white or grey.Can be returned to service in 3 days

Uniclass 2015
Cementitious tanking mortars (Pr_20_31_53_14)Primary
Specification data - Cementitious tanking mortars
Product Reference

MasterSeal 581

Standard product features

Technical characteristics:

  • Density: 2080 kg/m³ (approximately).
  • Particle size: 0.8 mm (maximum).
  • Working time at 20°C: 45 minutes.
  • Final set time at 20°C: 350 minutes.
  • Application temperature (substrate and material): 5–30ºC.
  • Compressive strength after 28 days: 55 N/mm².
  • Tensile strength after 28 days: 3.7 N/mm².
  • Flexural strength after 28 days: 7.6 N/mm².
  • Adhesive strength after 28 days: 2.5 N/mm².
  • Resistance to negative pressure: 4 bar.
  • Water vapour permeability: 86–120 μ.

Digital objects
PlatformCompatibleVersionCertified to
Revit
Revit 2015 1 1.3
IFC
IFC2X3 1 1.3
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