Liquid-applied membrane (LAM) is a monolithic, fully-bonded, liquid-based coating suitable for many waterproofing and roofing applications. The coating cures to form a rubber-like elastomeric waterproof membrane and may be applied over many substrates, including asphalt, bitumen and concrete.

Liquid applied roofing membrane

Why Choose Liquid-Applied Roof Membranes

  • Ideal for exposed roofs with large number of complicated details and penetrations
  • Cost-effective, especially for roof renovations and roof repair projects
  • Seamless, fills in cracks, gaps and voids in substrate
  • Easy and safe application
  • Durable
  • Rapid curing and excellent adhesion to all kinds of surfaces
  • Applicable for a multitude of waterproofing needs, not only roofs

Benefits of Sika Liquid-Applied Roof Membranes

Benefits Features
Fast, easy and safe application Liquid-applied
Extend life cycle of old or leaking roofs without interruption
Suitable for various types of structures and substrates
Many possible applications, for roofs, roads, bridges, basements, terraces and more
Versatile
Lower risk of roof failure even in cold climate and longer life expectancy
Highly elastic
Seamless
Fully adhered to substrate
High UV resistance
Retains flexibility even at low temperatures
Safety
Reduced fire risk
Zero flame technology
Entrapped moisture can evaporate, no blistering Vapor permeable
Design freedom with more possible applications
Variety of color options
Improved energy efficiency for cool roofs and solar roofs High solar reflectance index when applied in white color

Our Liquid-Applied Membrane Technologies

Water-based liquid applied membranes

Water-based liquid applied membranes and roof coatings were one of the first technologies for liquid applied roof waterproofing, and still have significant importance in the market.

Due to their low hazards characteristics, excellent UV stability and ease of application, acrylic emulsions and polyurethane modified dispersions are becoming popular, particularly in warm and moderate climate regions.

Benefits Advantages Features
Non-disturbing application
Low health and safety risk
Virtually odorless
Low hazards classification
Eco-Friendly
Solvent-free
Low-VOC
Constant energy efficiency performance Keeps high solar reflectance index (SRI) UV stable and resistant to yellowing
Time saving in application
No risk of mixing errors
Easy and ready to use One-component
Cost saving Economical Simple technology
Flexibility in application
Cost saving for site handling
Handy transportation
Easy handling
Convenient packaging
One-component polyurethane based liquid applied membranes

One-component polyurethane based liquid applied membranes and roof coatings
were invented in the 1960s and represent an indispensable technology in today’s roofing industry.

Due to their high mechanical properties and flexibility, particularly at lower temperatures, as well their capability to cure under a wide range of conditions, polyurethane based liquid applied membranes can also be used in climatically challenging environments.

Benefits Advantages Features
More flexibility of application in unstable weather situation
Time saving
Rain resistant almost immediately after application
Fast overcoating
Fast curing
Constant energy efficiency performance Keeps high solar reflectance index (SRI) UV stable and resistant to yellowing
Time saving in application
No risk of mixing errors
Easy and ready to use One-component
Flexibility in application
Cost saving for site handling
Handy transportation
Easy handling
Convenient packaging in tins
Two-component polyurethane/polyurea based liquid applied membranes

The demand for two-component polyurethane/polyurea (PU/PUA) based liquid applied membranes has risen in the last decade.

The fast and efficient application method by two-component spray machines makes it particularly suitable for large surface application and industrial application. Once the product is mixed in front of the application nozzle and applied to the surface it cures within seconds, allowing a fast over coating or early pedestrian traffic.

Sika has adapted the two-component PU/PUA hybrid technology to cold applications and hand-applied systems, making it now possible to do installations where hot spray is not efficient, while maintaining the same performance characteristics.

Benefits Advantages Features
More flexibility of application in unstable weather situation
Time saving
Trafficable almost immediately after application
Rain resistant almost immediately after application
Fast overcoating
Very fast curing
Time saving Fast project progress Fast application especially for large area
Economical waterproofing solution: very cost saving High material yield Solvent free and 100% solids

Sika LAM Can Be Applied on a Variety of Substrates

Liquid applied membrane substrate bitumen

Bitumen

Liquid applied membrane substrate metal

Metal

Liquid applied membrane substrate concrete

Concrete

Liquid applied membrane substrate bricks and stones

Bricks and stones

Liquid applied membrane substrate roof tiles

Roof tiles

Liquid applied membrane substrate copper

Copper

Liquid applied membrane substrate wood

Wood

Liquid applied membrane substrate fiber cement

Fiber cement

Sika LAM Can Be Applied in Highly Complex And Detailed Areas

Liquid applied membrane
Liquid applied membrane on roof terrace
Liquid applied membrane
Liquid applied membrane

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