WHAT IS A LIQUID APPLIED ROOFING MEMBRANE?

Liquid Applied Roofing Membranes/Fluid Applied Roofing Membranes are monolithic, fully-bonded, fluid-based coatings that have the capability of being fully or locally reinforced in transitional areas on a roof. These liquid applied membranes, also known as fluid-applied membranes, can be applied over various substrates such as concrete, brick, wood, mod-bit, TPO, PVC, EPDM and many other surfaces. When these coatings cure, they form a rubber-like, elastomeric, seamless waterproofing membrane with no cracks, gaps or voids to allow the ingress of water. The superior conformability and customization of liquids allow for easy application of roofing systems to complicated details and penetrations with little to no waste. Check out what Liquid Applied Roofing membrane solution Sika has to offer for your next commercial or residential roofing project!

WHY LIQUID APPLIED MEMBRANES?

durability
ready faster
freedom of design
VERSATILE
Easy to adjust to complex details

Liquid Applied systems provide convenience for complex geometries and surfaces with limited access. The membrane and flashings conform to virtually any shape and profile, effectively eliminating pitch pans, metal sleeves, etc. The flexibility of liquid applied membranes makes tending to difficult roofing shapes easy. 

Rowan
seamless application
Suitable for various substrates

LAM can be applied on almost any substrate. This makes it an ideal solution for most refurbishment projects, as in most cases no striping of the existing roof build-up is required (subject to roof assessment).  The membranes provide exceptional adhesion to most common substrate materials including:

  • concrete brick
  • terra-cotta
  • limestone
  • wood
  • glass
  • copper
  • steel
  • aluminum
  • existing bituminous roofing
  •  many single-ply membranes
ACCELERATED COMPLETION
MINIMAL DOWN TIME

By removing the neccessity of tearing off the existing roof in most instances, liquid applied membrane systems minimize the downtime involved in refurbrishment. Same-day primer and membrane installation is possible for  many applications. Additionally, the building can typically remain in use during installation. 

 

EARLY RAIN RESISTANCE

Once applied, RoofPro systems are waterproof shortly after, providing protection against sudden rainstorms and adverse weather conditions.

 

EASE OF APPLICATION
seamless

LAM forms one consistent layer on the substrate. There are no joints or seams, which not only adds to the application speed but also lowers the risk of application failures.

seamless application
FULl ADHESION

Unlike other membranes that are applied to the roof either by mechanical fasteners or partially applied adhesives. In the case of LAM, the membrane is the adhesive. Direct bonding to the substrate prevents lateral water migration. The membrane completely covers the roof with full adhesion, leaving no room for water ingress in case the membrane is punctured. 

adhesion

COST EFFECTIVE
extends roof's life

LAM not only repairs but also increases the life cycles of old or leaking roofs. With a lower risk of roof failure even in cold climate, roofs are able to withstand deteriorating conditions for years to come. With a high-performance coat on that's married with a reinforcement, LAM systems are able offer another 20 or 25 years on a warranted system

BEFORE

AFTER
Decreased labor costs

The simplicity involved in the application of liquid applied systems are unmatched, reuquring zero mixing. The next generations of these products make it easier. The need for multiple, high skilled workers are decreased. Laborers that are fairly new to the industry can quickly put down a state-of-the-art, long-term system.

rolling
SAFETY
zero flame technology

Many conventional roofing materials (especially torch-applied bitumen) tend to increase the risk of fire damages due to their flammability. In contrast, LAM features Zero Flame Technology and reduces the risk of fires, which additionally can reduce insurance costs.

zero flame
DESIGN FREEDOM
VARIETY OF COLOR OPTIONS

Liquid Applied systems are available in not only reflective white, but a vast array of colors, as well as customized colors.

central park west
Image: Central Park West Roof, Color: Gold

KEY FEATURES

MOISTURE TRIGGERED CHEMISTRY

Sikalastic RoofPro systems with MTC (Moisture-Triggered Chemistry) incorporate a unique technology that allows the material to use atmospheric moisture to trigger the curing process. This means:

RELIABLE APPLICATION

Systems are capable of curing in a wide range of conditions including extreme temperature ranges and humidity variations.

PROMISING RESULTS

Unlike typical polyurethane systems, membranes do not release CO2 during the curing process, which can cause outgassing and bubbling.

LESS IS MORE

Unlike typical hot-applied rubberized systems, liquid applied systems do not require a separate UV-resistant protection layer, and do not utilize separate sheet rubber
flashing materials.

ENERGY EFFICIENY

Liquid applied membrane systems are not only reliable in terms of their durable characteristics, but their sustainability features as well. This includes:

SOLAR REFLECTANCE

All Sikalastic RoofPro and RoofCoat products come in a reflective white coating that has a high solar reflectance index. This not only reduces the yellowing damage that results from excessive UV exposure, but the coating reflects much of the sun’s light to cool buildings cooler and lower air conditioning costs.

SINGLE COMPONENT TECHNOLOGY

Sikalastic RoofPro membranes are single component resins, which provide several advantages over traditional multi-componenet systems given that there is:

NO ROOM FOR ERROR

The potential error involved in mixing multiple components is eliminated. Single-component technology alleviates the incomplete curing and variations in membrane performance that can occur if proper mixing ratios of multiple components are not maintained.

MINIMAL WASTE

Given its single component properties, liquid applied systems to not require separate layers for protection against threats such as UV exposure. This minmizes material waste due to cured, but not applied material.

Additionally, less time is wasted as working time and labor costs are greatly decreased as a result of the technology's simplicity in mixing/applying. 

 

Since
1986
Sika Reps & Counting
28
Oldest Roof
25+ Years

LIQUID/FLUID APPLIED ROOFING PRODUCTS & SYSTEMS

SIKALASTIC ROOFPRO: FULLY REINFORCED LIQUID ROOFING & WATERPROOFING

Reinforcements

Reemat fiberglass mats are high tensile-strength reinforcing mesh that eliminates visible reinforcement overlaps and conforms to many flashing conditions without special cutting and fitting.  Non-woven polyester fleece reinforcing mesh has a defined-thickness which allows a single-pass, wet-on-wet application, ideal for many flashing conditions with sharp bends and angles.

 

SIKALASTIC ROOFCOAT: ROOF COATINGS

PRIMERS

Primers for Polyurethane Resins

Sikalastic RoofPro can be applied to a wide variety of substrates with the use of primers.  Use the chart below to find the primers that best suit your project requirements.

 

Primers for Silicone and Acrylic Resins

Sikalastic RoofCoat products can be applied to a wide variety of substrates with the use of primers. Use the chart below to find the primers that best suit your project requirements.

 

Primer Selection Chart for Silicone Resins
Substrate Primer
Modified bitumen ( bleed blocking of asphalt substrates) Sikalastic-501 Primer
Metal manually cleaned (rust inhibitor) Sikalastic-501 Primer
Acrylic elastomeric coatings Sikalastic-501 Primer
Polyurethane elastomeric coatings Sikalastic-501 Primer
Concrete Sikalastic-502 Primer
Metal Sikalastic-502 Primer
Wood Sikalastic-502 Primer
Masonry Sikalastic-502 Primer
Polyurethane elastomeric surfaces Sikalastic-502 Primer
PVC Sikalastic-503 Primer
FPO Sikalastic-503 Primer
EPDM Sikalastic-503/504 Primer, Consult Sika Rep
Hypalon Sikalastic-503/504 Primer, Consult Sika Rep

Always test adhesion before application.  

SYSTEM COMPONENTS & ACCESSORIES

Vapor Barriers
Product Reference Chart

The Product Reference Chart below provides a quick summary of the vapor retarder products and application.

  Vapor Retarder SA 31 Vapor Retarder SA 106 Ply Sheet HA 87 Vapor Retarder TA 138 Ply Sheet TA 87
Primer - Vapor Retarder Primer SB
- Vapor Retarder Primer VC
- Vapor Retarder Primer WB
- Vapor Retarder Primer SB
- Vapor Retarder Primer VC
- Vapor Retarder Primer WB
See Millenium Hurricane Force cold adhesive pds Vapor Retarder
Primer TA
Application Self-Adhered Self-Adhered   Torch Applied
Substrates1 - Concrete
- Steel
- Gypsum Decks
- Approved Gypsum Boards
- Plywood
- Concrete
- Steel
- Gypsum Decks
- Approved Gypsum Boards
- Plywood
Millenium Hurricane Force Cold Adhesive - Concrete
Seams Self-Adhered Self-Adhered Side Laps
Heat Welded End Laps
- Steel
- Approved Gypsum Boards
- Plywood
Torch Applied