Worldwide Leader in Commercial Roofing & Waterproofing

Sika is a worldwide leader in manufacturing resilient and sustainable roofing and waterproofing solutions for commercial construction projects. A roofing or waterproofing system plays an essential role in protecting a building or substrate. Ultraviolet rays, extreme weather, and ponding water all conspire to compromise the system prematurely, leading to leaking, damage to the building, costly repairs, and possibly an early tear-off and re-roof.

Sika responds to these challenges by offering a variety of system technologies from single-ply PVC or Modified Bitumen membranes to hot and cold liquid-applied membranes, our products, systems, and services are designed to meet the needs of any building owner all over the world. With 60+ years of experience and a reputation for making buildings and structures watertight in every imaginable climate, you are not only choosing a system that can withstand extreme elements but one that will be able to provide superior protection for decades. That is the Sika difference!

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Liquid Applied Roofing & Waterproofing Membranes

Sikalastic®

Sika offers many liquid-applied roofing & waterproofing membrane solutions under the Sikalastic® and Hydrotech® brands to meet your project's specific needs. Sikalastic’s Liquid-Applied Membranes (LAM) have a 60+ year history of performance and come as either a one or two-component formulation. Sikalastic’s one-component cold-applied products are high solids polyurethane, high solids silicone, and type 1 acrylic technologies. Sikalastic’s two-component cold-applied products are polyurea hybrids with optional polyaspartic topcoats, and the two-component hot-applied product is pure polyurea.

Used as either a long-term roofing or waterproofing solution or to do an inexpensive coating to extend the life of the current system, Sikalastic liquid membranes create a seamless, watertight, elastomeric membrane that has proven to perform in some of the toughest climates. Liquid membranes conform to complicated details and penetrations with ease and little to no waste. Sikalastic products are an industry-leading liquid-applied solution when above and below-grade waterproofing applications demand the very best.

Learn more about the new Sikalastic products.

Hydrotech®

Hydrotech's Monolithic Membrane 6125®, the original hot fluid-applied rubberized asphalt membrane, has been entrusted for more than 60 years with keeping high profile structures across the country and around the globe watertight. With more than two billion square feet of MM6125® installed on projects in 86 countries, Hydrotech is recognized as the leader in the waterproofing industry. The

Not satisfied to rest on our past successes, we have developed a full range of thermal and moisture protection products, drainage systems, The Ultimate Assembly® for plazas, decks and roof terraces, and the Garden Roofs® Assembly for vegetated (green) roof applications.

Hydrotech's Monolithic Membrane 6125® is the original hot fluid-applied rubberized asphalt membrane, successfully used worldwide by leading architects, engineers, and owners for various horizontal and vertical structures. These applications include plazas, parking decks, planters, tunnels, bridges, mud slabs, foundation walls, and roof areas. With over 60 years of proven performance, Hydrotech pioneered a single-source warranty in the U.S. for The Ultimate Assembly® for plazas, decks, and roof terraces, as well as the Garden Roofs® Assembly for vegetated (green) roof applications.

Single-Ply PVC Roofing Systems

Over 60 years ago, the industry’s first reinforced PVC membrane sheet was created with one goal in mind: to become the longest-lasting, most resilient PVC roofing membrane in the industry. Today, Sarnafil® still sets the standard that all others measure themselves by with third-party certification noting that a Sarnafil membrane can be expected to have a “service life of 35 years” and “reflects high resistance to weathering and aging of the product when properly installed.”*

Recognizing that all projects have different performance and budgetary requirements, Sikaplan® PVC membranes were introduced 40+ years ago to offer customers watertight protection at a competitive price. And because it is produced by Sika, customers trust that it is a quality, reliable sheet.

Modified Bitumen Roofing Systems

Along with Sika’s PVC membranes, Sarnafil and Sikaplan, Sika also offers Modified Bitumen membrane for roofing & waterproofing applications, SikaShield®. Like with PVC, Sika is seen as a leader in asphalt technology with over 100 years of experience. SikaShield is not only made from premium raw ingredients but also uses them in the right combination to achieve better results in cold flexibility, heat resistance, viscosity, softness, and longevity. SikaShield is not only made from premium raw ingredients but uses them in the right combination to achieve better results in cold flexibility, heat resistance, viscosity, softness, and longevity. Thanks to its superior waterproofing qualities, SikaShield is widely used in commercial construction, either for new buildings or renovation projects.

Sikalastic 701F, 702 and 702 THX

Sikalastic 701SF, Sikalastic 702 and Sikalastic 702 THX, a new line of two-component, cold-applied resins engineered for long-lasting protection in demanding applications such as cooling towers, chemical containment areas, direct-to-substrate projects and recover applications.

Learn more about the new Sikalastic products.

SikaFast®-3341

Extended open time, toughened, low to medium modulus, structural adhesive.

SikaFast®-3341 is an extended open time, flexibilized structural adhesive designed to substitute welding, riveting and other mechanical fastening. SikaFast®-3341 is suitable for high strength fastening of joints on different types of substrates including top coats, metals, and plastics with no or limited surface preparation.  This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.

Product Benefits:

• Extended working time for larger applications
• Non-sagging and thixotropic formulation
• Adhesion to a wide range of substrates without or with limited surface preparation
• Good strength and impact / peel resistance

Learn more about SikaFast-3341.

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LIVE from IRE 2025 with Sika!

Sikalastic® RoofCoat - Your Liquid Applied Roof Re-Cover Solution

Sikalastic® RoofCoat recover solutions are an excellent choice to extend the life of your building's old roofing system. A simple cleaning, priming, and coating can extend the life for up to 20 years.

Why pay for tearing off the old system when you can save money and keep your building watertight with a roof coating.

Download the eBook to Read More!

Sika is Offering Free Training with a Sikalastic® RoofPro Job Registration

Did you know… Sika offers free training for approved contractors with a Sikalastic® RoofPro job registration.

Register today!

Sika Roof Recover: Sikalastic® RoofPro & RoofCoat 

Sikalastic RoofPro and RoofCoat recover systems are excellent choices for contractors/owners to add value and bring savings to their roofing options. Simply cleaning, priming and coating; an old roof's life can be extended for another 15 to 25 years. Determining a roof’s suitability for recover includes a visual inspection and a moisture scan to ensure there will be no trapped moisture under the recover application. Furthermore, RoofPro products are easy to apply: no mixing, no stirring, just dip with a roller and apply!

Recieve 5% off first Roof Coat Order!

Liquid Applied Roofing and Waterproofing Projects

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. 

Sikalastic RoofPro products have been used for roofing and waterproofing in the US for over 34 years. Most applications are warranted for 20 years and are applied by approved applicators. Sikalastic RoofPro can be used to waterproof balconies, walkways, planters, plazas, foundation walls, green roofs, inverted roofs, built-up roofs, roof terraces, and much more! Click on any of the projects below to learn how Sikalastic RoofPro was used as a problem solver and protector for building owners, specifiers, and contractors across America.

Learn more about liquid applied roofing.

Check out our projects.

Sikalastic®-646 Lo-VOC

Single Component, Low-Voc, Low-Odor Polyurethane Roof Coating

Sikalastic®-646 Lo-VOC is a cold liquid-applied, highly elastic, aliphatic, single-component, low odor, low VOC moisture-triggered polyurethane resin designed for easy application as part of Sikalastic® RoofCoat roofing systems.

• Sikalastic Polyurethane technology has an over 30 year track record

• Moisture triggered chemistry that is rapidly weatherproof after application

• Single component - no mixing and ready to use

Learn more.

Sikalastic®-515 AC

Acrylic Roof Coating

100% acrylic elastomeric coating for life extension, recover, and enhanced reflectivity of various roof substrates including asphalt, single-ply and metal roofing. Meets or exceeds ASTM D6083 requirements.

• Fully-adhered, seamless roofing
• High solar reflectivity lowers internal building temperatures and cooling costs
• Prolongs existing roof's life

Learn more.

Sikalastic®-500

Single Component, Ultra High Solids, Liquid Applied Silicone Roof Coating

Sikalastic®-500 is a versatile, low VOC, ultra high solids, single-component, liquid applied silicone roof coating. It provides superior UV resistance over a variety of roof substrates. The main features of Sikalastic®-500 are its high solids content, rapid cure and superior physical properties. Certified to meet CoolRoofRatingCouncil (CRRC) and EPA guidelines for ENERGY STAR® compliance.

• VOC Compliant:  < 50 g/l VOC maximum in California.
• UV resistant: Slows degradation caused by normal weathering, aging, and ultraviolet rays
• Reflective Top Coat: Can reduce cooling costs by reflecting UV rays. The high reflectivity also helps colors maintain their original appearance, whereas other roof coatings tend to fade and sun bleach at much quicker rates.
• Waterproof: Able to withstand ponding water.
• Durability: Infrequent and low maintenance costs.
• High tensile strength and abrasion resistance.

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  Sustainability

   Sika is committed to continuously measure, improve, report
   and communicate sustainable value creation.

   “More value, less impact” refers to Sika’s commitment to
   maximizing the value of our solutions and contributions to all
   stakeholders while reducing risks and resource consumption.

   Six strategic targets focus on economic performance, sustainable
   solutions, local communities/society, energy, water/waste, and
   occupational safety.

Sustainability is one of Sika's key strategic pillars that is used as a competitive advantage to benefit all stakeholders. 

Sika’s objective centers on supplying customers with innovative solutions that boost the efficiency, durability and aesthetic appeal of buildings, infrastructure constructions, installations, and vehicles. Sika solutions are developed to help customers to make a positive environmental impact, or to address climate-related concerns.

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The Start of Sika

Kaspar Winkler was driven by his entrepreneurial spirit when he laid the  cornerstone of
our company in 1910. He was born into a modest cobbler family and emigrated quite early from Austria to Switzerland.

There he invented Sika-1, a quick-setting waterproofing admixture for mortar, which was used to waterproof the Gotthard Tunnel, enabling the Swiss railway company to electrify this important connection between Northern and Southern Europe.

Innovation met demand! Kaspar Winkler recognized an upcoming global need for his “trailblazing” admixtures and launched subsidiaries around the world. Already in the 1930s, 15 Sika subsidiaries in Europe, USA, Argentina, Brazil and Japan established new construction chemicals markets.

Today the new Gotthard Tunnel (NEAT: New European Alp Transit) again is an important project for Sika. Although Sika-1 is still part of our product range, today much more advanced products are being used. High-tech admixtures for shotcrete and tailored waterproofing systems are needed to build this 57 km tunnel – the longest tunnel on earth – through the Swiss Alps. We can be proud of our history and look to the future with optimism, as our know-how, our service and our products are needed more than ever.

See our milestones through history.

Latest Promotions and Rebates

Sika is Offering Free Training with a Sikalastic® RoofPro job registration

Did you know… Sika offers free training for approved contractors with a Sikalastic® RoofPro job registration. Learn more here!
View Promotion

Sika Roof Recover: Sikalastic® RoofPro. RoofCoat

Sikalastic RoofPro and RoofCoat recover systems are excellent choices for contractors/owners to add value and bring savings to their roofing options. Simply cleaning, priming and coating; an old roof's life can be extended for another 15 to 25 years. Determining a roof’s suitability for recover includes a visual inspection and ...
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eBooks

Sikalastic® RoofCoat: A roof re-cover solution

Sikalastic® RoofCoat recover solutions are an excellent choice to extend the life of your building's old roofing system. They are a simple cleaning, priming and coating can extend the life for up to 20 years. Why pay for tearing off the old system when you can save money and keep ...
View eBook

Sika Roof Recover eBook!

Sikalastic RoofPro and RoofCoat recover systems are excellent choices for contractors/owners to add value and bring savings to their roofing options. Simply cleaning, priming and coating; an old roof's life can be extended for another 15 to 25 years. Determining a roof’s suitability for recover includes a visual inspection and ...
View eBook

Latest Canada Content

ROOFTech 2023 is Coming Soon!

By Evelyn Witterholt. Canada’s dedicated trade show for the construction industry is right around the corner. The 2023 ROOFTech Show is approaching fast! This trade show, dedicated to the Canadian construction industry, will take place on April 4-5, 2023 in Toronto, Canada at the International Centre. Register for tickets today ...
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Latest Podcasts

Coffee Conversations - Acquisition Frenzy! Where is the Industry Going?

Join us for this episode of Coffee Conversations, sponsored by IB Roof Systems, as we explore the good, the bad and the ugly of corporate acquisitions. Our distinguished panel discusses why acquisitions happen and how they can affect a business depending on how they are carried out. Keeping your identity ...
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Sean Fraker - The Future is Here – Liquid Applied Roofing Membrane

S3:E56 Talking to one of the leaders in Liquid Applied Roofing Membranes, Heidi J. Ellsworth visits with Sean Fraker, National Manager with Sika. They talk about how the future of roofing has arrived with liquid applied roofing. Sean shares the vision of Sika and the recent acquisition of American ...
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Latest Webinars

Coffee Conversations - Acquisition Frenzy! Where is the Industry Going?

Join us for this episode of Coffee Conversations, sponsored by IB Roof Systems, as we explore the good, the bad and the ugly of corporate acquisitions. Our distinguished panel discusses why acquisitions happen and how they can affect a business depending on how they are carried out. Keeping your identity ...
Watch the Webinar

Sika Corporation & KPost Roofing and Waterproofing

Who doesn’t need a coffee break? Join RoofersCoffeeShop for a coffee break every third Tuesday of the month at 10 a.m. PST. This month we were joined by Sean Fraker of the Sika Corporation. Sika Corporation, headquartered in Lyndhurst, New Jersey, is a specialty chemicals company with a leading position ...
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Coffee Conversations - IRE, What to expect in 2022

S3:E8 Starting the year off right, RoofersCoffeeShop’s Coffee Conversations invites the thought leaders around the IRE Community Day to share what is happening and how roofing professionals can be involved. As the IRE Keynote Speaker, Reid Ribble, NRCA CEO joins the panel to share his excitement for what the ...
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Buy Online

Sikalastic RoofPro and RoofCoat recover systems are excellent choices for contractors/owners to add value and bring savings to their roofing options. Simply cleaning, priming and coating; an old roof's life can be extended for another 15 to 25 years. Determining a roof’s suitability for recover includes a visual inspection and ...
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Latest Videos

Sika Trade Show Video Playlist

To learn more about Sika Liquid Applied Membranes, visit their RCS Directory! LIVE from IRE 2025 with Sika LIVE from FRSA 2024 with Sika RoofersCoffeeShop is LIVE with SIKA at IIBEC 2024
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Episode 36 - Getting Your Company Recognized, Fun Innovations and A Busy Fall Season of Trade Shows Ahead!

Join Heidi and Karen every Friday to hear what they have to say about all the happenings within the roofing industry. The 36th episode of our Weekly Blend series is here! Join President Heidi J. Ellsworth and COO Karen L. Edwards for another exciting installment of this RoofersCoffeeShop® (RCS) original ...
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Sika Video Playlist

See all Sika videos and subscribe to their YouTube Channel. Learn more about Sika by visiting their RCS Directory. NEW! Sikalastic RoofPro Lever Lock Pail Our new Sikalastic RoofPro lever lock pails make your life easier saving you time, money and labor costs. Order yourself a pail today to open and reseal your products ...
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