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Duratop Epoxy Specifications
Click Here to view our Duratop Epoxy Architectural Specifications (PDF)
DURATOP Epoxy Resin Countertops are filled epoxy resin, molded into homogenous, non-porous sheets with no surface coating. All sheets are color and pattern consistent throughout the thickness and will have integral or adhesively seemed components up to maximum practical length.
Typical Architectural specification for DURATOP Epoxy Resin Countertops:
1. Typical work surface: Nominal 1 inch (25 mm) flat, maximum 1 1/4" (32 mm), minimum 3/4" (19 mm). Finished tops to be supplied in maximum practical length up to 96" (2438 mm) finished.
2. Surface finish to be smooth, non-glare matte finish with clean exposed tops abd edges in uniform plane, free of defects.
3. Loose Curbs and Splashes: 1 inch (25 mm) or to match thickness of countertops.
4. Color
a. Black (industry standard)
b. Regular Grey
c. White or other color per supplier standard production.
Color sample to be approved by Contracting Officer before work is put in hand.
5. Drip Grooves: Provide under all work surface exposed edges, unless noted otherwise on the Laboratory Furnishing Drawings. Drip grooves shall be ½ inch (13 mm) set back from the front edge where the top overhangs 1 inch (25 mm) and ¼ inch (6 mm) from the edge where the edge overhangs ½ inch (13 mm). The drip groove is to be 1/8" depth
and 1/8" Wide (3.175 mm).
6. Edge profile: All exposed upper edges and corners shall have 1/8" inch (3 mm) bevel or radius as required.
7. Marine edges or no-drip edges: Where indicated on the Laboratory Furnishing Drawings, shall be molded to the countertop material and be 1 inch (25 mm) wide and ¼ inch (6 mm) high with chamfered or radiused transition to and be an integral part of the work surface. Marine edges may be factory applied where necessary.
8. Indented areas: Where indicated on the Laboratory Furnishing Drawings, shall be ¼ inch (6 mm) deep with chamfered or radiused sides. Internal and external corners shall have ¼ inch to ½ inch (6 to 13 mm) radius. Marine edges formed around indented areas shall not be less than 1 inch (25 mm) wide.
9. Sink Mounting: Drop in Sink Cutouts: Cutouts shall be profiled to provide support for the sink, and to ensure that the rim of the installed sink is 1/8 inch (3 mm) below the surrounding work surface level or bottom of drain grooves, if present. The top edge of the cutout shall have 1/8 inch (3 mm) bevel. Ensure that there shall be no gaps between the installed sink rim and work surface.
10. Curbs and Splashes:
a) Height: 4 inches (100 mm), unless noted otherwise on Laboratory Furnishing Drawings.
b) Same material as countertops and bonded or field applied to the surface of the top to form a square 90 degree joint.
Molded integral coved curb splash are required to reduce joint seams and adhesive attachment.
11. Provide all holes and cutouts as required for built in equipment and mechanical and electrical service fixtures. Verify size and location of opening with actual size of equipment to be used prior to making openings. Form inside corners to a radius of not less than 1/8 inch (3 mm). After sawing, rout and file cutouts to ensure smooth, crack free edges. Seal exposed edges after cutting with a waterproofing material recommended by the manufacturer.
12. Fume hood work surfaces: Tops shall be 1" (25 mm) inches thick at outer marine edge, indented 1/4 inch (6 mm)
to provide a raised rim around all exposed edges minimum 1 inch (25 mm) wide or as to allow for the fume hood sash. The front top edge of the raised rim and exposed vertical corners of the top shall be rounded or chamfered to a 1/8 inch (3 mm) radius. The juncture between the raised rim and the top surface shall be coved or chamfered to a ¼ inch (6 mm) radius.
13. Install epoxy resin countertops with supplier's recommneded silicone or Epoxy resin adhesive to the casework.
All square butt joints, splashes and sealing around sinks to be be manufacurer's recommended compatibale and chemical resistant epoxy adhesive.
THICKNESS - In addition to the wide variety of sizes available, DURATOP solid cast epoxy lab work surfaces, with their smooth, non-glare matte finish, are molded in several thickness'. When fabricating Duratop laboratory tops and sheet material at the ISO 9001 certified manufacturing facility, all fabricated cuts are made with diamond tipped, water cooled, rotary saws. Sink cutouts, faucet or gas tap fixture holes or other service hole requirements, are cut with CNC diamond tipped routers and drill bits. Typical specification for epoxy countertops in accordance with The Woodworking Institute (W.I.) and its affiliates is 25 mm or 1" Thickness. The maximum span for unsupported epoxy shall not exceed 30" (762mm) without intermediate support. The maximum cantilever shall not exceed 12" (305mm) without intermediate support.
Current manufactured and available thickness' are:
IMPERIAL |
METRIC |
5/8" |
15/16 MM |
|---|---|
3/4" |
19/20 MM |
1" |
25 MM |
1 1/4" |
32 MM |
2 1/2" Adhered |
64 MM |
MINIMUM Quantities apply for production purposes of some thickness'.
EPOXY CURBING 100 mm (4") typical, also known as applied splash, is supplied loose, cut to size with each sheet order if required, to match the countertop sizing, or can be field cut from sheet material to meet job requirements. Top front edge is typically eased with a 3/16" Radius, Bevel or chamfer. A drip Groove is typically cut on the front underside of the sheet material at a prescribed depth of 1/8" (3mm) and 1/2" (12mm) distance from the edge. Epoxy sinks, drain outlets, Pegboards & Stainless Steel Troughs, faucets, eye wash, drench showers, etc., are offered to complete the lab requirement.
INTEGRAL or COVED CURB back splash is also offered in 4" molded one piece height. Coved Curb worksurfaces should be used when reducing the number of back splash joints is of high priority or architectural specifications call for integral coved curb splash. They are available in seamless lengths up to 96" [2438mm] and depths up to 38" [965mm]. Other sizes are available. Coved Curb worksurfaces are integrally molded 1" [25mm] thick with cove tapered at the top to 3/4" (19 MM). By special request, 3/4" or 1-1/4" [19mm or 32mm] thick worksurfaces can be ordered with an Integral curb of 4" [102mm] tall. For other special height integral curbs, please contact TLS for availability.
Both Left and Right Side Integral Coved Corner Curbs are produced at a molded size 
of 44 3/4" finished inches (1,137 MM) square.
This corner coved curb comes with a 44 3/4 " Side Curb (1137 mm)
and a integrally molded back splash curb of 44 3/4" (1137mm).
The depth of 44 3/4" molded section is then fabricated and reduced
to the required width or depth of the counter, as specified, be it 24", 25", 30, 31",
(609mm, 635mm, 762mm 787mm), etc.
MOLDED Marine Edge / No-Drip Edge Duratop epoxy countertops or laboratory tops can be manufactured with an integral no-drip marine edge on front and/or sides, as required or specified.
MOLDED Marine or No-Drip edge with Integral Coved Curb backsplash
Countertop or bench toppings of DURATOP Epoxy are also made with Integral Coved curb and no-drip marine edge for a seamless molded unit, up to the standard molding capability of depth and length.
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Unapplied Marine Edge (UME) Duratop epoxy flat strips are used for field attachment on the top surface of counter top material to form a marine edge or no-drip edge and offered in 1/4" (6mm) thickness and in lengths up to 8' (2.438 meters) length.
Color matching epoxy adhesive is available for attachment.. Marine edges are also integrally molded on certain sized sheet materials. UME Strips are NOT sold without epoxy sheet materials. UME strips are only available in Black Epoxy.
Unapplied Marine Edge Strips in "L" Shape configuration:
These Duratop Epoxy strips are field applied to 3/4" (19mm) and 1" Thick (25mm) thick epoxy or solid phenolic resin countertops to form a no-drip marine edge. The "L" shaped design allows for coverage of the front edge of the countertop as well as the top surface in order to provide a uniform epoxy edge treatment to the work surface material.
UME "L" shaped strips are NOT sold without epoxy sheet materials
and only available in Black Epoxy.
Window Sills (Stools) Epoxy - Material shall be monolithic, DURATOP cast epoxy resin product and shall consist of a polymerized cast resin materials formulated to provide a surface with high chemical resistance characteristics. The combination of epoxy resin and asbestos free inert materials shall be oven-cured in molds to obtain maximum chemical resistance, and then removed from the molds and oven tempered to achieve maximum physical strength and stability. Surfaces shall have a uniform low-sheen surface and the finished materials shall be extremely hard and resistant to scratches and abrasion. Surface is to be flat with square side edges or finished if sills protrude past wall depth. Color shall be black or in color as required by architect or site conditions, obtained from the manufacturer's standard color range. Colored Epoxy adhesive for securing interior stools to substrate shall be Duratop Epoxy Smooth-On-2 part adhesive cement.
See accessories for other Epoxy related products available.
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Physical Characteristics
DURATOP Epoxy
Physical Property |
ASTM Method |
RESULTS |
FLEXURAL STRENGTH |
ASTM D790 |
13,400 psi |
MODULUS of RUPTURE |
ASTM D790 |
1,000,000 psi |
COMPRESSIVE STRENGTH |
ASTM D695 |
35,000 psi |
TENSILE STRENGTH |
ASTM D638 / D651 |
10,700 psi |
HARDNESS, ROCKWELL "M" |
ASTM D785 |
Average value of 105 over 5 samples |
SPECIFIC GRAVITY (Density) |
ASTM D792 |
126.75 LBS/FT3 / 2.03 g/cc |
WATER ABSORPTION |
ASTM D570 |
0.01 to 0.02% |
HEAT DISTORTION |
ASTM D648 |
331F (166C) |
FLAMMABILITY or FIRE RESISTANCE |
ASTM D635 |
DID NOT IGNITE |
FALLING BALL IMPACT RESISTANCE |
ERF-23-69 |
NO FRACTURE @ 7 FEET |
TEMPERATURE USE LIMIT |
331F (166C) |
|
| COEFFICIENT OF THERMAL EXPANSION |
ASTM E831-06 |
2.4 x 10-5power in/in per Degree C |
 |
 |
 |
Duratop, a Monolithic modified cast epoxy resin, is highly resistant to normally used laboratory alkalis, alcohols, acids and solvents. The following solutions were tested on Black Epoxy for a period of 24 hours, with results indicated when tested with listed reagents in accordance with NEMA standard LD-3, test procedure 3.9.5.
CHEMICAL RESISTANCE |
RESULT |
Acetic Acid, Glacial |
No Effect |
Acetone |
No Effect |
Ammonium Hydroxide - 28% |
No Effect |
Amyl Acetate |
No Effect |
Aqua Regia |
No Effect |
Benzene |
No Effect |
Butyl Alcohol |
No Effect |
Calcium Hypochlorite |
No Effect |
Carbon Disulfide |
No Effect |
Chloroform |
No Effect |
Chromic Acid - Saturated |
Slight Spot |
Ethyl Alcohol - 95% |
No Effect |
Ethyl Acetate |
No Effect |
Formaldehyde - 37% |
No Effect |
Hydrochloric Acid - 48% |
No Effect |
Hydrogen Peroxide - 30% |
No Effect |
Kerosene |
No Effect |
Methyl Alcohol |
No Effect |
Nitric Acid - 20, 30 & 70% |
No Effect |
Phenol - 85% |
No Effect |
Phosphoric Acid - 85% |
No Effect |
Silver Nitrate - 10% |
No Effect |
Sodium Hydroxide - Flake |
No Effect |
Sodium Hydroxide - 40% |
No Effect |
Sodium Hydroxide NaOH - 60% |
No Effect |
Sulfuric Acid - 77% |
No Effect |
Sulfuric Acid - 96%-98% |
Failure |
Zinc Chloride |
No Effect |
Monochlorobenzene |
No Effect |
Gasoline |
No Effect |
Toluene |
No Effect |
Formic Acid - 90% |
No Effect |
Remel Bactidrop Oxidase Reagent |
No Effect |
Remel Bactidrop Spot Indole Reagent |
No Effect |
Evaluation Ratings: RETURN TO TOP
1) No Effect - No detectable change in the material surface.
2) Excellent - Slight detectable change in color or gloss.
3) Good - Clearly discernable change in color or gloss.
4) Fair - Objectionable change in appearance due to surface discoloring or etching.
5) Failure - Pitting, cratering or erosion of work surface material. Obvious deterioration.
Fire Resistance
USING ASTM D-635 TEST PROCEDURE, A 3/8" (9.525mm) BUNSEN BURNER WAS OVERTURNED ON THE DURATOP EPOXY WORK SURFACE FOR FIVE (5) MINUTES WITH NO ADVERSE EFFECT. EPOXY RESIN IS SELF EXTINGUISHING AND SHOWS NO BURN RATE, IN ACCORDANCE WITH ASTM METHOD D-635. INDEPENDENT LAB TEST AVAILABLE UPON REQUEST.
ALL INFORMATION DESCRIBED HEREIN IS BASED UPON MANUFACTURERS' TESTS AND DATA BELIEVED TO BE ACCURATE AND CURRENT. THE INFORMATION PROVIDED IS TYPICAL AVERAGE VALUES AND CHEMICAL RESULTS MAY BE COLOR DEPENDENT.
NO ONE MATERIAL IS SUITABLE FOR ALL THE CONDITIONS POSSIBLE. THEREFORE THE PROPERTIES OF ANY MATERIAL SHOULD BE CHECKED FOR SUITABILITY UNDER THE SPECIFIC CONDITIONS OF EACH INSTALLATION. THE FINAL DETERMINATION FOR SUITABILITY OF DURATOP EPOXY RESIN MATERIALS DESCRIBED ABOVE IS THE SOLE RESPONSIBILITY OF THE USER.
Click Here to view our Duratop Epoxy Architectural Specifications (PDF)
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