News & Events

Shur Deck WP Demo Event at DPF – Tempe

Posted in Events  |  December 14, 2023

Join us for a FREE SHUR DECK WATERPROOFING DEMO hosted by Desert Polymer Flooring, Inc. in Tempe, Arizona, presented to you by Westcoat Reps Mark Haen and Curtis Lawson.

January 10, 2024 10:00AM-2:00PM

Watch live installation of:

  • Shur Deck Standard
  • Shur Deck PRO

Lunch will be provided.

Shur Deck WP Demo Event at SRS JB Wholesale – Gardena

Posted in Events  |  July 7, 2023

Waterproofing demo in Gardena

Join us for a FREE SHUR DECK WATERPROOFING DEMO hosted by JB Wholesale in Gardena, California, presented to you by Westcoat Reps Bill England and Marc Di Zinno.

October 5, 2023 8:00AM-12:00PM

Watch live installation of:

  • Shur Deck Standard
  • Shur Deck PRO

Lunch will be provided.

Product Update: MK-40 Mer-ko Topcoat

Posted in Product News  |  June 27, 2023

We are excited to announce our improved MK-40 Mer-Ko Topcoat.

This topcoat is a high-performance 100% acrylic water-based coating, that has excellent resistance to weather and dries quickly. MK-40 is designed to be used as the topcoat for Weather Deck and Shur Deck Systems.

Product update

View Technical Bulletin

Some of the benefits and improvements made to these materials are:

  • Enhanced product stability
  • Greater ease of mixing
  • Better color stability
  • Adjusted lower viscosity to help with roller application
  • Increased sheen to semi-gloss, for greater ease in cleanability
  • Updated Color chart with 5 new colors and 5 discontinued colors

Effective Date

Starting June 26th 2023 or all batch numbers 23177 or later.


MK-40 may appear different from previous batches. It is recommended to avoid use with

previous batches, to ensure consistent sheen, color and overall finish.

If you have any additional questions on this improved formula, please contact your local

Mer-Ko Sales Representative or contact us at 1-844-537-7203

Topcoat color chart

View Updated Color Chart

MK40    Product News    Technical Bulletin    Topcoat

Shur Deck WP Demo Event at Roofline Supply – Vista

Posted in Events  |  June 26, 2023

Waterproofing demo Vista

Join us for a FREE SHUR DECK WATERPROOFING DEMO hosted by Roofline Supply in Vista, California, presented to you by Westcoat Reps Bill England and Marc Di Zinno.

September 28, 2023 8:00AM-12:00PM

Watch live installation of:

  • Shur Deck Standard
  • Shur Deck PRO

Lunch will be provided.

New Shur Deck Training Video

Posted in Mer-Ko Decking Solutions  |  May 21, 2021

Our new Shur Deck training video can be viewed on our YouTube page, enjoy!

Shur Deck – Value Engineered System

A metal lath reinforced walking deck and flat rooftop deck system designed for use over plywood or concrete substrates. This high-performance system provides long-term durability and waterproofing protection using a latex-modified polymer mortar to prevent cracking.

Using a wide variety of finishing techniques, this seamless, flexible, skid-resistant, crack-resistant, waterproofing foot traffic surface will complement any design — providing functional protection and aesthetic appeal.


Shur Deck – The Affordable Housing Solution

Posted in Mer-Ko Decking Solutions  |  May 26, 2020

Exterior of affordable housing

The need for space-saving, affordable housing complexes is not diminishing anytime in the near future. In fact, low income, and multi-family apartment complexes are rapidly outnumbering single-family, new construction homes in the United States – a trend that doesn’t seem to be slowing. Part of protecting these huge new investments include going the extra mile to ensure your new endeavor performs to the best of its ability.

Protecting balconies, walkways, decks, rooftops, and stairways from destructive elements can greatly increase the lifespan of your substrate and can save time and money on future damage and potential repairs. Because affordable housing complexes are constructed with a budget in mind, it is important you can attain both quality and cost-effectiveness when choosing waterproofing solutions.

Shur Deck – The Affordable Housing Solution

The Shur Deck Waterproofing System is a multi-layer, cementitious system designed for use over plywood or concrete substrates. This system consists of reinforcing metal lath (when installed over plywood), cementitious filler, and a reinforced flexible latex waterproofing membrane. This waterproofing membrane incorporates an anti-microbial component that inhibits the growth of mold and mildew on the membrane surface and in damp settings – perfect for coastal or rainy environments.

An acrylic, matte topcoat available in 9 opaque colors, finishes the system leaving it protected from harmful UV rays and is chemical resistant. The durable surface allows for regular daily maintenance and won’t degrade with scrubbing or cleaning solutions.

Some great advantages to the system:

• Cost-Effective
• Seamless & monolithic
• Excellent adhesion to plywood substrates
• Will not soften under high temperatures
• Resists degradation from UV, ozone, and weathering
• Outstanding long-term durability and performance
• Solvent-free / Environmentally friendly
• One Cement System

The Shur Deck System has some important ratings and reports, too!

• One-Hour Fire Resistance Rating
• Class A Fire-Retardant Roofing System
• IAPMO Evaluation Report # 517

The Shur Deck system is not only top of the line for waterproofing and protection but also looks great. Aside from standard trowel finish, the system can also be textured by using design options such as skip trowel texturing, trowel knock-down, stippling, and stenciling. This wide array of finish options provides unlimited aesthetic design.

The system comes standard with a 5-year warranty, with longer warranties also available. Shur Deck Underlayment is additionally available for use under laminate or tile. Versatile and powerful, the Shur Deck system is a great asset to your investment and is a perfect way to add appeal to your affordable housing properties.

Want to learn more about the Shur Deck system?

Fill out the form below and a sales representative in your area will contact you.

Max. file size: 50 MB.

Affordable Housing    Shur Deck    Waterproofing Decks

We have added a Slip Resistant Additive to the Mer-Ko line

Posted in Product News  |  August 18, 2018

MK-86 Mer-Ko Slip Resistant Additive is a non-skid additive that can be mixed with high solids epoxies, polyurethanes, and topcoats to produce a skid resistant surface to help reduce slipping. This lightweight
product will remain suspended in high viscosity coatings.

Advantages of using a Slip Resistant Additive

  • Skid Resistance
  • No need to grind, sand, or broadcast
  • Works in Clear and Pigmented Coatings
  • Easy to Use
  • Aggressive Texture for Greater Skid Resistance

The MK-86 Slip Resistant Additive can be purchased in 32-ounce quart containers for $10.85, click on the button below to order today. Interested in learning more about our Shur Deck? Please contact us at (844) 537-7203 or via our Contact Us page

Shur Deck    Slip Resistant

Shur Deck Cement is now available multiple colors

Posted in Product News  |  August 1, 2018

Shur Deck cements in white and gray

Shur Deck has expanded the powder blends for MK-5 and now offers it in white or gray. MK-5 Shur Deck Cement is a multi-purpose material used as the Base Coat, Body Coat and Texture Coat in the Shur Deck system. When used in conjunction with the system components, Shur Deck Cement provides a seamless, flexible, skid-resistant, crack-resistant, waterproof walking deck system with a wide variety of finish options and textures.

Benefits of MK-5 Shur Deck Cement

  • One cement that is used as the base coat, body coat, and texture coat
  • Add water only formula
  • Outstanding long-term durability and performance
  • Solvent-free and environmentally friendly

Click here to see the latest MK-5 product specification.

Where to find the Shur Deck System?

Contact customer service at (844) 537-7203, to find a local distributor near you or contact your local Westcoat Architectural Representative. Not sure who your Representative is? Click here to see our directory.

Product News    Shur Deck

Mer-ko by Westcoat has received IAPMO Class A and 1 Hour Fire Rating

Posted in News  |  September 21, 2017

Outdoor deck

We are excited to announce that Mer-ko by Westcoat has received Class A and 1 Hour Fire Rating IAPMO Listings. These listings will replace the former expired ICC listings for Shur Deck (#3200) and Weather Deck (#2009). The Uniform Evaluation Report ER-517, for Mer-Ko by Westcoat, was issued on July 27, 2017. Both of the Mer-ko systems Mer-ko Shur Deck and Mer-ko Weather Deck systems received the Class A and 1 Hour fire ratings. These systems were evaluated for use as the walking deck (Div 07 18 13) and roof covering systems (Div 07 50 00). As of December 8, 2017, the listing also includes supplements for California (meets 2016/2013 California Building / Residential Code) and City of Los Angeles (meets 2017 LABC / LARC code). You can find the full listing here on the Mer-ko site.

What is a Class A Fire Rating?

A Class A Fire rating is when a combustible material is put through a performance test and has been indexed by a numeric value less than 25 for the flame spread. Most commercial wood species have a flame spread index between 90 and 160 (Forest Products Laboratory, 1999).

What is a 1 Hour Fire Rating?

A “one-hour” fire rating is given to various building materials that can resist the exposure of a standardized fire for one hour. The rating was created to evaluate the performance of building elements, such as walls, floor, or roof systems during fire exposure. The test follows standard procedures that specify the rate at which the temperature increases over the course of the test.

Interested in learning more about our systems?

Please contact Robert Ryan our Sales representative who can answer your waterproofing questions, he can be reached at or via our Contact Us page.

News & Events