Product Data Sheet Show all documents

Sikalastic® Moisture Seal

High performance, two-component, water based epoxy primer and waterproofing barrier membrane

Sikalastic® Moisture Seal is a two part, water-based, epoxy which chemically cures to form a waterproof vapour barrier that is hydrostatic pressure resistant and can prevent rising damp. Sikalastic® Moisture Seal can be used as a primer over damp concrete and damp screeds prior to the application of various Sika®  waterproofing membranes. Sikalastic® Moisture Seal is a low VOC product that is ideal for use in confined spaces.

▪ Excellent adhesion to damp substrates ▪ Easy water clean-up ▪ Primer and moisture barrier ▪ Non-flammable ▪ Resistant to moisture ▪ Convenient 1:1 mix ratio ▪ Easy to apply
Product Data Sheet Show all documents

Usage

  • Waterproofing and priming of Screeds (damp or green)  
  • Waterproofing and priming of Concrete (damp or green)
  • Rendered brickwork, rendered blockwork, fibrous cement sheeting
  • Negative pressure waterproofing applications
  • For use as primer prior to the application of waterproofing membranes
  • Moisture vapour barrier coating for green screeds and concrete (positive and negative applications)  

Advantages

▪ Excellent adhesion to damp substrates ▪ Easy water clean-up ▪ Primer and moisture barrier ▪ Non-flammable ▪ Resistant to moisture ▪ Convenient 1:1 mix ratio ▪ Easy to apply

Packaging

20L Kits ( 10 L Part A + 10 L Part B)

Product Details

Product Information

Composition

Water-based epoxy

Shelf life

12 months from date of manufacture in original, sealed containers, if the storage conditions are met.

Storage conditions

Store in dry, weatherproof environment, protected from direct sunlight at temperatures between +10°C and +30°C.

Density

1.35kg per Litre

Solid content by volume

~ 50%

 

Application

Application Information

Mixing ratio

1:1 by volume of Part A & Part B

Layer thickness

MOISTURE BARRIER COATING: 250-300 micron wet film thickness per coat (2 coats required)
PRIMER: 100 micron wet film thickness (1 coat required)

Relative air humidity

< 85%

Pot Life

25°c- 90min

35°c- 45min

Curing time

Full cure at 7 days

Waiting time to overcoating

Allow a minimum of 6 hours and a maximum of 48 hours curing prior to the application of Sika® liquid applied waterproofing membranes. In case the overcoating interval of 72 hours has been exceeded, apply a further coat of Sikalastic® Moisture Seal to reactivate and extend overcoating interval.
Consumption

Consumption

MOISTURE BARRIER COATING: A minimum of 2 coats shall be applied at 3m2 per Litre per coat

PRIMER: 1 coat is required at a rate of 10m2 per Litre per coat
Application steps

APPLICATION INSTRUCTIONS

All surfaces to be waterproofed must be firm, clean, dry, structurally sound and smooth. All grease, oil, wax, curing compounds, dust, loose material, laitance and other contaminants must be removed. All projections and rough spots should be dressed off to achieve a level surface. The substrate surface must be continuous. Substrates that have been previously treated or coated with curing compounds, bonding agents or other coatings must be mechanically prepared and washed to produce a contaminant-free surface.

Sheeting

All sheeting must be fixed in accordance with manufacturer's installation directions.

Concrete

Concrete must be allowed to cure for a minimum 72 hours and cement render and sand and cement screeds must be allowed to cure for 24 hours prior to the application of Sikalastic® Moisture Seal. Surfaces must be even and smooth, imperfections must be repaired with a suitable Sika® MonoTop repair mortar.

MIXING

Prior to application thoroughly stir Part A and Part B with separate implements. Measure equal volumes of Parts A and B and place into a clean container. Using a mechanical mixer, thoroughly mix together to produce a homogenous liquid. Use care to avoid air entrapment into the mixture. Do not mix more product than can be used in within 90 minutes at 25°C.

CLEANING OF EQUIPMENT

Remove liquid coating immediately with a dry cloth, clean tools and equipment with water while the material is still wet. Cured coating can only be removed mechanically.

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