Bio-Gard E255 Severe Service Epoxy | Surface Tolerant Chemical Resistant Coating

TESTING RESULTS

Recommend Application Thickness is 6 mils on flat surface.

Recommended application is 100 sq ft / gallon @ 15 mils

CURE SCHEDULE

APPLICATION TEMPERATURE: 45- 110 degrees F

Product Use Instructions 

BIO-GARD E255  is an high performance coating designed to offer maximum service in difficult exposures while offering extreme “field friendliness” in mixing ratio and tolerance of typical practical application conditions. The complete absence
of solvents in this formulation ensures freedom from odors during application and curing and eliminates the osmotic blistering often found in other high performance coatings as a result of retained water sensitive solvent left in the cured film after curing.

Surface Preparation

General: Surface should be clean and free of contamination such as greases, oils or other residues. Clean with detergent wash or pH neutralizing agents then flush with fresh water. Abrasive blast metals to SSPC-SP10 “Near White Blast” standards with a 2-4 mil anchor profile to provide optimal adhesion performance.

Concrete: Surfaces should be allowed to cure for a minimum of 20 days before coating. Excessive weak surface laitance must be preferably removed by abrasive sweeping before coating. Aged, uncoated concrete surfaces are best prepared by mechanical grinding or blasting. Contamination by oil or grease should be removed with an industrial degreaser before abrasive blasting or acid etching.

Below Water: Remove marine biological settlement and corrosion by high pressure water jetting with or without abrasive. Conventional air/ abrasive blasting works well at shallow depths however efficiency falls off sharply below 10 feet. Hand held power tools such as needle guns or grinders can give good results in small areas. Apply within 45 minutes after surface preparation to minimize rusting or resettlement of biological fouling which interferes with adhesion.

Once applied to wet surface, product can be submerged and cured under water. NOTE-  product cannot sustain wave movement until fully cured!

MIXING PROCEDURES 

This material is a two-component product, premeasured to produce the desired kit size once part A and B are mixed. For small kits, a Jiffy type mixer with a high torque motor is recommended for proper blending. Pour the curing agent into the base and mix for about 1 minute, taking care to reach all corners and walls to eliminate unmixed material. Unmixed material will never harden. Material may immediately be used.

Note: Pot life and reaction time is heavily dependent on temperature. As a general guide, every 18°F above
77°F will half pot life and cure time.

Safety: This is a hazardous material if misused. Read and understand the Safety Data Sheets (SDS’s) before use

Warranty Disclaimer: The technical data given herein has been compiled for your help and guidance. It is based upon our experience and knowledge however, as we have no control over the use to which this information is put, no warranty, express or implied, is intended or given. We assume no responsibility whatsoever for coverage, performance, or damages, including injuries resulting from use of this information or products recommended herein.

What makes Bio-Gard E255 different from traditional industrial epoxy coatings?

Bio-Gard E255 is a Kevlar reinforced 100% solids epoxy designed for severe corrosive and erosive service environments. Unlike many traditional solvent-based epoxies, it can tolerate damp or wet surface conditions and continue curing even after submersion in water when properly applied.

Can Bio-Gard E255 be applied to wet surfaces?

Yes. Bio-Gard E255 is formulated as a surface tolerant epoxy coating that can be applied over properly prepared damp or wet substrates. This makes it useful for difficult industrial maintenance projects where completely dry conditions are difficult to achieve.

NOTE: The coating should not be exposed to active wave movement or heavy water turbulence until fully cured.

Is Bio-Gard E255 suitable for underwater applications?

Bio-Gard E255 can continue curing underwater once applied to a prepared wet surface. It is commonly considered for marine, wastewater, and water handling applications. However, the coating should not be exposed to active wave movement or heavy turbulence until fully cured.

What types of environments is Bio-Gard E255 designed for?

Bio-Gard E255 is engineered for severe service industrial environments including:

• Chemical processing facilities
• Marine and offshore structures
• Wastewater infrastructure
• Secondary containment areas
• Tank coating applications
• Corrosive and erosive industrial exposure zones

What chemicals can Bio-Gard E255 resist?

Bio-Gard E255 is designed for aggressive chemical service environments and is commonly referenced for resistance to harsh exposures including concentrated caustics and sulfuric acid service conditions. Review the Technical Data Sheet and chemical resistance data for specific exposure compatibility.

Is Bio-Gard E255 VOC free?

Yes. Bio-Gard E255 is a VOC free 100% solids epoxy coating formulated without solvents. This helps reduce odor concerns and allows for thicker film builds without solvent entrapment issues.

What is the difference between Bio-Gard E255 and Bio-Gard E251?

While both are surface tolerant epoxy coatings, Bio-Gard E251 is a more versatile industrial maintenance epoxy for wet surface applications and rehabilitation projects. Bio-Gard E255 is typically selected for more severe corrosive, erosive, and aggressive chemical service environments requiring enhanced long-term protection.

Related Products:

• Bio-Gard E251 Surface Tolerant Epoxy
• Bio-Dur E3050 Novolac Epoxy

What coatings are commonly paired with Bio-Gard E255?

Depending on the service environment, contractors may pair Bio-Gard E255 with specialty primers, novolac epoxy systems, or chemical resistant repair compounds for complete corrosion protection systems.

Related Products:

• Bio-Seal E199 Protective Epoxy Coating
• Bio-Chem E330 High Performance Epoxy
• Bio-Dur E563 Fast Cure Epoxy Coating

Is Bio-Gard E255 used in marine and offshore environments?

Yes. Bio-Gard E255 is commonly considered for marine and offshore applications where steel structures are exposed to corrosion, moisture intrusion, chemical exposure, and physical wear. Its surface tolerant properties help simplify maintenance in difficult field conditions.