Product Data Sheet Safety Data Sheet Show all documents
Sika® Damp Stop

Sika® Damp Stop

TWO PART WATER BASED MOISTURE BARRIER EPOXY COATING FOR CONCRETE AND MASONRY WALLS AND FLOORS

Sika® Damp Stop provides a moisture barrier for interior and exterior concrete or masonry surfaces. This prevents ingress of water vapour and will protect linings and furnishings.

  • Water based - easy to apply
  • Dries in 4 hours
  • Non-toxic and odourless
  • Can be applied to damp or fresh concrete
  • Moss and mould resistant
Where to buy
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® Damp Stop is designed for sealing concrete and masonry walls and floors from moisture or rising damp. Sika® Damp Stop is not designed to be crack bridging and will not stop flowing water.  

Advantages

  • Water based - easy to apply
  • Dries in 4 hours
  • Non-toxic and odourless
  • Can be applied to damp or fresh concrete
  • Moss and mould resistant

Packaging

4 litre unit (A + B)

Colour

White when mixed.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Hydrostatic pressure tested to ASTM 1306C-05A - exceeds 45 psi or 310 kPa.
  • Water Vapor Transmission rate tested to ASTM E96/E at <0.28 g/h/m² (or 864 MNs/g).
Product Information

Shelf Life

Twelve (12) months when stored as stated.

Storage Conditions

Store in unopened original containers in cool dry conditions.

Density

Mixed 1.10 kg/litre

Application

Application Information

Mixing Ratio

1:1  by weight or volume

Pot Life

2 hours @ +20 °C

Waiting Time / Overcoating

8 hours @ +20 °C (max. 48 hours), 12 hours @ +10 °C (max. 48 hours)

 

Drying Time

TOUCH DRY TIME: 4 hours @ +20 °C, 8 hours @ +10 °C
Consumption

Consumption

First coat: 6-8 m²/litre.  Second coat: 8-10 m²/litre.  A 4 litre unit will cover 10-15 m² for a total 2-coat application depending on surface absorbency and profile.
Application steps

SUBSTRATE PREPARATION

  • Ensure all surfaces are dry, sound and free from dirt, grease and laitance.
  • Make good all surfaces; fill all pore holes and ‘bag’ the surface of porous masonry with appropriate Sika MonoTop repair mortar prior to application of Sika® Damp Stop. Ideally honed masonry should be used.
  • Sika® Damp Stop will tolerate a damp surface but will not tolerate any free standing water or excessively saturated surfaces as this will prevent the product curing.
  • If surfaces are wet, dry off then apply Sika® Damp Stop before moisture returns.
 

MIXING

It is best practice to mix full units. Where smaller areas are to be coated it may be necessary to mix part units. In this case, a strict mix ratio of 1 : 1 by weight or volume must be adhered to. All mixed product should be used immediately as pot life is approximately 2 hours @ +20 °C.

TO MIX A FULL UNIT: Add ALL of Part B (Hardener) to Part A (Base). Mix thoroughly with a mixing paddle attached to a slow speed drill at 200-300rpm for 2 minutes, ensuring no air is entrained while mixing. Scrape down sides of tin and mix for another 2 minutes.

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