How do you apply elastomeric coating?

elastomeric roofing

What is elastomeric used for?

First, what is elastomeric coating? Elastomeric coating is a protecting material that can be applied to exterior walls like concrete, masonry, stucco, and more or on roofing. This is a common coating for commercial and industrial structures. Elastomeric epoxy coating is ten times thicker than a paint coating and forms a flexible but thick waterproof coating. Ideal to make minor repairs like hairline cracks and keep a roof airtight and waterproof.

The uses of elastomeric are beyond what most of us know to be a roof coating. Elastomer is made in a variety of grades based on what it will be used for, such as some of the daily things we all use:  

  • Adhesives
  • Chemical processes 
  • Food production 
  • Molded flexible parts
  • Scientific applications
  • Seals
  • Vehicle manufacturing

The performance of these different Elastomeric coating and  elastomer products varies matching the structural integrity of the matter. With over twenty types of elastomer, both natural and synthetic varieties, we find elastomer in rubber tires and tubes for almost everything you use on a daily basis, like your vehicle or motorcycles, on bicycles and recreational vehicles, even your lawn mower and other yard equipment. Elastomer if found in balloons, belts, hoses, gloves, matting, rubber bands, and pencil erasers.

Will elastomeric roof coating stop leaks?

And Elastomeric coating is a material stretches and returns to its original dimensions, like a rubber band. It comes in an acrylic and a non-acrylic nature that is either rolled out or sprayed on commercial and industrial roofing as a single-ply Elastomeric coating membrane. Elastomeric coating is extremely protective from harsh weather elements, the sun’s UV rays, and foot traffic that is common on many commercial and industrial structure. 

To be applied to an existing roof with the intention of stopping leaks, the original roofing material will determine if Elastomeric coating is the right product. A professional commercial roofing contractor will inspect the current roof and make that determination. 

So, yes, an Elastomeric coating is waterproof and is used to stop roof leaks and lengthen the lifespan of an aging roofing system. For example, elastomeric coating for metal roofs is common and for a layered asphalt roof, or most single-ply membrane roofing systems. When applied by professional commercial roofing contractors, Elastomeric coating as a restorative coating will seal most any  problematic seams, creating a leak-proof barrier on the roof.              

How long does elastomeric coating last?

While many factors have an influence on the longevity of any roof, and Elastomeric coating is the same. An Elastomeric coating is expected to provide a minimum of 10 years of service to any commercial and industrial roofing surface. When applied correctly and recommended maintenance routines followed, an Elastomeric coating can give you up to 40 years of protective roof coating. 

Can you paint over elastomeric coating?

A high-quality acrylic latex paint will stick to elastomeric coating, but the any pinholes will still show because the paint doesn’t fill the holes. The pain will shrink, allowing the holes to come through, leaving ways for water to enter the surface. One solution is to apply a primer first that will bond to the elastomeric coating and fill the pinholes. If your elastomeric coating doesn’t have any pinholes, then the primer is not necessary, but a high-quality acrylic latex should still be used. 

flat white roof

Is elastomeric coating better than silicone coating? 

When comparing elastomeric roof coating vs silicone, we need to understand they both have their place, and it depends on the purpose you’re trying to achieve. Some facts about both that can help you determine which one is right for your project, keeping in mind that elastomeric is a product that is designed to contract, elongate, or expand, returning to its original state.

Acrylic Elastomeric

  • A thick, water soluble product used in coating products and various paints. 
  • Contain additives that enhance its longevity and keeps it color while reducing breaking down or chalking
  • Multiple layers required for application to increase dry film millage. 
  • Does not meet the NRCA requirements  for elastomeric, or a single-component for high-solid and monolithic waterproofing roofing applications.
  • Does not have any elongation factors or increased tensile strength due to its chemical nature.
  • Requires re-coating due to the chemical reaction to the weather, UV rays, and water.
  • Ponding is not covered under product warranty due to hydrostatic pressure causes failure and the chemical resistance is weak due to the hydrophilic properties.
  • Multiple processes are required to be incorporated into the application for waterproofing,
  • Is an inexpensive making it popular choice for contractors.

Silicone Elastomeric

  • Meets the NRCA requirement for being a single component, monolithic and waterproofing.
  • Multiple chemicals are not needed for caulking or sealing.
  • Has 150% elongation factor for improved contraction, expansion, and waterproofing.
  • Has an emissivity of almost 90% that reduces radiation penetration and high reflective energy saving.
  • Color additives available.
  • Ponding is not excluded. 
  • Maximized installation only requires a single coating. 

Customers wonder if elastomeric coating for metal roofs good? Absolutely!  Elastomeric coating is flexible, making a perfect coating for metal that contracts and expands with the temperature. It can be applied to raw metal or rusted metal as long as it is of sound condition. Want to get started on elastomeric coating in Jasper, GA? Call 706-301-8630 today.