Liquid EPDM and its benefits

The EPDM roofing association which started in 2002 has always focused on educating contractors and the roofing community on the characteristics and benefits of EPDM membranes. Their studies have concluded that EPDM’s service live is over 20 years. Arguably the most important benefit of an EPDM system is the membrane’s flexibility. A growing number of contractors are specializing in EPDM installation, due to its low callbacks and insurance premiums. EPDM roofing systems also feature low maintenance, easy repair options and low annualized costs.

With Liquid EPDM there is No cutting, No gluing and No Seaming! EPDM Liquid Rubber® totally eliminates the problems encountered with single ply materials because it produces a seamless membrane which is all of the same chemistry. So what do we gain by using EPDM Liquid Rubber®? It eliminates seam failures and eliminates shrinkage of the single ply rubber. It also prevents further chalking particularly with white EPDM and it extends the life of a roof. Liquid Rubber®, available through Epdmcoatings.com is the only EPDM in Liquid form. This product is a high solids solution of sheet EPDM Rubber. It converts from liquid to solid elastomer via a unique free radical cure mechanism which works at temperatures of 55° F and higher. EPDM Liquid Rubber® can be applied directly on many types of substrates that have solid, stable, non-porous and uniform surfaces such as flat roofs. For most substrates, primers are not necessary. As an example, some types of substrates that can be coated with EPDM Liquid Rubber® without a primer are:

• EPDM Rubber Membrane on flat or sloped Roofs
• Weathered Steel Siding
• Outstanding barrier for salt-water environments
• Weathered Fiberglass
• Weathered standing seam and corrugated metal roofs
• Weathered Vinyl, PVC and Polycarbonate plastic
• Foam insulation for pipe
• Cast Concrete foundations

Liquid Rubber® may be applied at any temperature that permits it being spread onto the surface. It will waterproof immediately upon application. The solvent will evaporate at a rate governed by temperature but will not be affected by relative humidity. Exposure to freezing temperatures before cure has taken place will not damage the film. The time necessary to reach cure should not be a concern as this process will occur automatically. Exposure to sunlight will accelerate the curing process. The final film properties of the cured membrane will be the same regardless of the time required to achieve cure.

EPDM Liquid Rubber® will provide long term protection even under extreme exposure conditions. It is resistant to temps of 300 degrees F and minus 62 F. Liquid rubber is water resistant even in an uncured state. An unexpected rain shower shortly after application will not wash it off. The slow cure and non-polar nature of EPDM Liquid Rubber® gives it outstanding surface wetting properties. The product does not fill cracks and crevices but will produce an even film penetrating even the smallest surface irregularities. When EPDM Liquid Rubber® is applied over porous surfaces such as poured concrete, pinholes will appear on the surface as the material slowly displaces the air in the pores. This surface wetting feature enables the product to be applied in a SINGLE COAT and the still results in complete film integrity. EPDM Liquid Rubber® can be applied to hot surfaces encountered during the summer. The solvent in the system will flash off rapidly but the polymer will remain soft long enough to permit overlapping even after 1-2 hours. The cure rate is still controlled even at temps up to 120 degrees. The product can, therefore, be applied on the hottest day.

The controlled cure rate also results in a longer pot life, giving the applicator more than adequate length of time (4-6 hours depending on temperatures) to use the mixed quantity of material. Adhesion will increase over time. Polar surfaces such as metal, concrete and wood result in stronger adhesion than non-polar surfaces such as asphalts. Most weathered surfaces including single ply and thermoplastic membranes will have enough of a surface profile to anchor the EPDM Liquid Rubber®

By itself, the EPDM Liquid Rubber® membrane will exhibit the characteristics of its EPDM chemistry i.e. U.V. ozone stability, excellent ponding water resistance and long-term retention of flexibility. EPDM Liquid Rubber® applied over generally sound singly ply EPDM can extend its life another 20 years. The useful life of metal roofs will also benefit greatly when EPDM Liquid Rubber® is applied. It is recommended that a corrosion inhibitive primer first be applied to areas where severe rusting has occurred. EPDM Liquid Rubber® does not contain any corrosion inhibiting pigments but it is such an effective moisture barrier that it can be applied directly over light rust without a primer. For more information contact EPDM Coatings or call at 855-281-0940. They also have a blog filled with discussions from customers as well as valuable information on the product at http://liquidroof.blogspot.com/

The Commercial and Industrial Use of EPDM Coatings

Here’s a look at the commercial and industrial use of EPDM coatings. The waterproofing and weather resistance of the material has made it popular for many uses. There are other advantages as well.

For Vehicles

The coating is most commonly used to help protect the metal roofs of RVs and tractor trailers, often as an after-market product. A few RV suppliers offer the coating as an add-on to extend the life of the roof leaks or to reduce maintenance.

Many components of vehicles are made of the synthetic rubber. The liquid coating is sometimes used to protect pumps, valves and other engine items from heat, friction, water or weather.

Buildings

Flat roofs are the ideal choice for the coating. Contractors can offer the coating to their roofing customers as an alternative to other less waterproof materials with shorter life spans.

EPDM can be used directly on any material other than silicone or asphalt. It can be used on concrete floors to reduce noise on stucco as weatherproofing and on chimneys for example. It can also be used to cover wood and siding. A special coating is usually recommended for slanted and vertical surfaces.

One of the advantages for roofs is that it allows for rainwater harvesting. The coating does not pollute the rainwater. So, the water can be used for cleaning, gardening and other purposes.

Refrigeration

One commercial and industrial use of EPDM coatings is in the area of refrigeration. Manufacturers of walk-in refrigerators, refrigerated trailers and similar items use the coating for improved insulation. It has good resistance against heat, which is one reason that it has become popular for roofing.

Ponds

Pond manufacturers typically use the coating because of the water-resistance. Pond liners are typically composed of the material. The non-polluting feature is one reason it makes a good choice for this application.

Pools and Decks

A commercial and industrial use of EPDM coatings is in the area of pool and deck installation. The coating creates a non-slippery but soft surface that enhances the safety of wet walkways and decking. The coating also helps to protect the decking material from the water to increase the lifespan of the wood.

General Construction

The coating is a good choice for many construction purposes because it is compatible with so many different materials. Existing concrete, wood or brick can be coated with the liquid rubber to extend the life of the underlying material. That’s one reason there is no single commercial and industrial use of EPDM coatings. There are many.

Liquid roof and its benefits

Liquid roof

Liquid Applied Roofing Systems

Information about Liquid Roof and Its Benefits

Here you can learn a bit about liquid roof and its benefits for new and existing construction. Let’s start with the basics.

What Is It?

Liquid roof is a liquefied version of a synthetic rubber typically referred to as EPDM. The letters EPDM stand for ethylene, propylene, diene monomer and M class respectfully.

 

Before the liquefied version came on to the market, rolls of the rubber were used for waterproofing roofs. The liquids are easier to apply. They fill up cracks and crevices. They can go where the sheets could not go.

Why Choose the Liquids?

Ease of application is one reason. The foil is more difficult to apply correctly. You could easily end up with bumps, overlaps and uneven spots that contribute to water pooling. Water can seep under the rubber sheets and cause the roofs to leak. So, while the rolls were the best choice for waterproofing at one time, there are better choices today.

The liquids have more uses. They can be used on RV roofs and other vehicles. They can be applied to a wide range of roofing materials including metal, fiberglass and wood. Through the use of an undercoating, the liquids can be applied to built-up and asphalt-based coatings. Other reasons to choose the liquids are listed in some detail below.

Liquid Roof and Its Benefits for New Construction

For new building construction, applying the liquids increases the lifespan of caulks and sealants used to waterproof around flashing, vents, HVAC units and other protrusion points. If the new roofs are made of steel or aluminum, the liquids prevent rust and effectively extend the life of the roofing material.

If you choose white, which is the base color typically provided; the coating reduces heat within the building and also helps to protect the surrounding environment from excessive heat. Black and dark colored roofing materials are partially to blame for the high temperatures seen in southern cities during the summertime. By reducing heat within the building, the coating helps reduce air conditioning costs.

Liquid Roof and Its Benefits for Existing Construction

When applied over the entire area, the coating provides the same benefits for existing roofs as it does for new ones. It can also help to reduce noise from rain falling on metal roofs.

For roof leaks and general waterproofing, the roof coatings are the least expensive and most effective choice. So, there you have the facts about liquid roof and its benefits. It’s a money-saving environmentally friendly alternative.

Technical Aspects of EPDM

Elastomeric coatings are roofing applied in a viscous state. It has elastic properties, and can stretch in the summer time heat and then return to their original shape without damage.

Elastomeric coatings usually contain polymeric materials, such as acrylic, and a white pigment, such as titanium dioxide, to make them opaque and reflective. An elastomeric coating is applied thicker than paint. An elastomeric coating can be used on virtually any substrate including asphalt built-up roofing, concrete roofing, metal roofing, modified bitumen roofing, polyurethane foam roofing and single ply roofing.

Since EPDM Liquid Rubber Coatings cures by chemical reaction, a single heavy application will be preferable to multiple thin coats. A second coat will bond to a previous film but that bond will not be as strong as the internal bond within each layer. If a second coat is applied before the first has thoroughly cured, some wrinkling may result as the first coat absorbs solvent and swells. This will, however, recover as the solvent evaporates. It is generally recommended that only a single coat be applied over non-porous surfaces, the thickness of which can be varied as desired. Thicker films will take longer to cure through. Asphalt coatings and asphalt built-up roofs are considered unstable substrates and therefore, not recommended for coating directly with Liquid Rubber EPDM. EPDM COATINGS do carry a specific elastomeric which with a two coat application gives you a 10 year warranty.

Liquid Rubber is designed to re coat structurally sound existing roof and protective materials. They are also best for RV Roof Repair. They should not be used in place of roofing membranes”.

The following are recommended substrates to coat:

  • Metal – Coated or Galvanized Steel
    • Weathered Aluminum
    • Weathered Copper
  • EPDM Rubber membrane
  • Concrete (except foot traffic surfaces)
  • Urethane Foam
  • Primed Wood
  • Fiberglass
  • PVC Sheet and Pipe
  • Acrylic Sheet
  • Sponge Rubber insulation

Do Not use Liquid Roof or Liquid Rubber on the following substrates:

  • Built up asphalt roofs
  • Asphalt shingles
  • Modified asphalt roll roofing
  • Stainless steel
  • Glass
  • Silicone caulk
  • Foot traffic surfaces
  • Hypalon Membrane