Product Data Sheet Show all documents

Sikalastic® M 262

(former MasterSeal® M 262)

Polyurethane liquid membrane for waterproofing of wet rooms and non-exposed applications

Sikalastic® M 262 is a one component unmodified pure polyurethane fluid which cures with the humidity in the atmosphere. It produces a highly elastic, hydrophobic membrane and has been designed to offer excellent long-term waterproofing of wet rooms, substructures and any application not exposed to UV. The rheology of the material is such that it allows easy application even on vertical substrates.

  • Highly elastic
  • Easy application, even on vertical substrates
  • Resistance to cold: The film remains elastic even down to -40°C
  • Water vapour transmission: The film breathes so there is no accumulation of humidity under the coat
Product Data Sheet Show all documents

Usage

Waterproofing of:
  • Wet rooms
  • Dampproof coating for foundations
  • Flat roofs, under tile or screed
  • Verandas and balconies (under protection)
 

Advantages

  • Highly elastic
  • Easy application, even on vertical substrates
  • Resistance to cold: The film remains elastic even down to -40°C
  • Water vapour transmission: The film breathes so there is no accumulation of humidity under the coat

Packaging

Sikalastic® M 262 is supplied as 25 kg unit.

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Complies to ASTM C836
Product Information

Shelf life

12 months from date of production

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +35°C. Protect from direct sunlight, heat and moisture.

Density

~1.5 kg/l (25 °C)

 
Technical Information

Shore A hardness

~50

(ASTM D2240)

Tensile strength

Tensile strength~1.5 N/mm2
Elongation at break~700 %

Service temperature

-40°C min. / +60°C max.

Watertightness

Nil (BS EN 12390-Part 8)

Application

Application Information

Ambient air temperature

+5°C min. / +35°C max.

Substrate temperature

+5°C min. / +35°C max.

Substrate moisture content

≤ 4 % pbw moisture content.
Consumption

Consumption

A minimum total consumption of 1.5 kg/m².
Application steps

SUBSTRATE QUALITY

The surface to be coated must be clean, dry free of laitance, oil, grease or any substance that may impair adhesion.
The preferred method of surface preparation are: captive blasting, surface grinding or similar.
Repairs to the substrate, filling of joints, blowholes/voids and surface leveling must be carried out using the appropriate Sika® products. Refer to Sika’s Technical Department for further advice.

APPLICATION

Apply with brush, roller or trowel in one or two coats with minimum total consumption of ~1.5 kg/m² to achieve 1 mm DFT.
Do not exceed 48 hours between coats.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with Thinner C after use. Hardened material can only be removed mechanically.

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