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  Epoxy.com Logo - Epoxy, Polyurethane, Polysulfide, Polyester, MMA - Methyl Methacrylate and other Construction Resin Systems - Over 350 Products- Since 1980Contact Us  

Epoxy.com Product #419


Replace by Epoxy.com Product #449

This Material requires a minimum product purchase. Please see our Products That Require a Minimum Order Page, or contact Epoxy.com for more information.

A black, liquid applied, two-component, high solids, chemical cured, polyurethane coating designed to form a tough rubber membrane impervious to moisture.


Composition: Polyurethane elastomer. A two-component system which does not depend on atmospheric moisture to cure.

Basic Uses: Once cured, Epoxy.com PRODUCT #419 allows expansion and contraction over a broad temperature range and maintains flexibility and waterproofing properties under continuous exposure to water above or below grade. Epoxy.com PRODUCT #419 has a thixotropic consistency and may be used on vertical as well as horizontal surfaces. Epoxy.com PRODUCT #419 waterproof membrane is intended for use on steel, wood, concrete, asphalt, tanks, ponds, roofs, foundations, etc.


Water Tanks: Epoxy.com PRODUCT #419 has been used with outstanding success as a lining for potable water storage tanks. The Epoxy.com PRODUCT #419 fills and covers the crack and because of its flexibility, allows them to move with changes in temperature. The product is firmly bonded to the substrate so water cannot flow underneath the lining as it does with sheet lining materials. Also used as a joint filler for applications in water storage and sewage treatment environments.



Applied by airless spray methods, brush, roller, squeegee or trowel.

Epoxy.com PRODUCT #419 cuts cost of application by eliminating splicing, sealing tapes, adhesives and other labor consuming methods required when installing other conventional types of waterproofing systems.

The superior flexibility and elongation properties of

Epoxy.com PRODUCT #419 allows expansion and contraction with the substrate without cracking or becoming brittle.

Epoxy.com PRODUCT #419 has excellent abrasion

resistance for applications where there may be contact with floating debris.

May be applied over a variety of substrates including concrete, stone, brick, cement blocks, wood and metal.

Environmentally safe, complying with VOC standards.

Color :
Black only.

Shelf life: 1 year in unopened containers.


All products proven to be defective in manufacture will be replaced at no charge. Since the use of these products is beyond our control, we cannot assume any risk or liability for results obtained, nor can we accept damages in excess of the purchase price of these products.

The Epoxy.com PRODUCT #419 contains petroleum hydrocarbon, petroleum naptha, and other ingredients. Health and safety precautions should be observed during the storage and use of this product. Avoid contact with moisture or water. Please refer to the Material Safety Data Sheet for further information.


If Epoxy.com PRODUCT #419 is damaged, it can be repaired by cleaning the surface and recoating it with Epoxy.com PRODUCT #419.


Priming: Epoxy.com Product #888 Primer is used to prime green concrete (more than seven day cure for normal structural concrete). It is also used to prime damp concrete, masonry, or wood surfaces on which the waterproofing membranes are to be applied, as well as on adequate cured and dry surfaces.

Although Epoxy.com PRODUCT #888 PRIMER may be used on green concrete and damp surfaces, moisture may become trapped under the waterproofing membrane. This may result in blistering, particularly on warm, sunny days. Therefore, cover the membrane as soon as possible to minimize blistering. Blistering over 4" in diameter should be cut and patched with membrane.

Concrete: Utilizing Epoxy.com PRODUCT #888 PRIMER will allow the application of the Epoxy.com PRODUCT #419 to be made on green concrete. Concrete must be free of any curing compounds or bond release agents. Existing concrete should be free from foreign matter, oil, greases, etc. Concrete sections shall require the removal of fins, ridges and other protrusions and patching of voids.

Remove oil and grease with a commercial grade alkaline cleaner; thoroughly rinse and dry.

Wood: All plywood to receive coating shall meet or exceed requirements for A-C plugged, exterior grade.

Metal: Metal surfaces shall be dry, clean, free of grease, oil, dirt, rust and corrosion. Other coatings and contaminants could effect bond of coating system.

Existing Coatings: In the case of an existing coating, it should be determined whether or not there will be compatibility and adhesion between the Epoxy.com PRODUCT #419 and the existing coating system. This can be determined by applying a sample test patch to verify procedures for a successful application of the new coating system. If adhesion is proven to be poor, then removal of the existing coating is necessary.

Job Conditions: Install coating materials under conditions where all of the following conditions are met.

Concrete has not been treated with any substance which will adversely effect adhesion or performance.

Rain is not expected within 8 hours of application.

Surface temperatures at time of application are above 40F(5C) and lower than 110F (44C). Epoxy.com PRODUCT #419 can be applied in temperatures below 40F as long as the concrete is not frozen and does not have frost on it.

Positive ventilation for interior applications can be continuously supplied throughout application period and 8 hours after.

Open fires and spark producing equipment are not, and will not be, in application area until vapors have dissipated.


Application :

Epoxy.com PRODUCT #888 PRIMER may be applied to clean, dirt free, frost free, surfaces at a coverage rate of 250-350 sq. ft. per gallon. Do not apply to frozen concrete or to concrete with standing or visible water. Do not use during precipitous weather.

Do not apply on wet surfaces or when rain is imminent, or when the surface may become wet prior to a full cure. Keep container tightly closed. Avoid contamination with water, make sure all application equipment is completely dry.

For use in constant submersion, the recommended thickness must be achieved in one day with as many coats as needed. On vertical surfaces at least two coats will be required to achieve a minimum of 60 dry mils.

Recoating must be done before first coat firms, but it must be done within 24 hours. If Epoxy.com PRODUCT #419 has cured more than 24 hours, the surface must be roughened up and primed before reapplying.

Epoxy.com PRODUCT #419 may be used in a single 60 mil application over sound surfaces without danger of gassing. Application must be made uniformly to avoid thin spots and care must be taken to avoid pinholes and repair them should they occur. Coverage to obtain 60 dry mils is 24 sq. ft./gallon. Protection board must be used prior to backfilling or pouring concrete.


Measuring Standard and Conditions


Mixing Ratio


9 A to 1 B by volume

Potlife at 77deg. F (1 quart mass)


1 hour



Component A


10.2 pounds per gallon

Component B


7.5 pounds per gallon



9.97 pounds per gallon

Tear Strength

ASTM D624 (Die-C)

130 PLI

Tensile Strength

ASTM D412, 50 mil Die-C

800 p.s.i




Hardness (Shore A)

ASTM D2240

65 minimum

Abrasion Resistance
% wt. loss, CS-17 wheel
1000 grams/1000 cycles

ASTM D4060

1.2 mg

Adhesion to concrete


>350 P.S.I

Moisture Vapor Transmission

ASTM E96 procedure B

0.03 perms

after 5 minutes


after 24 hours



by volume


Resistance to decay


Surface membrane free from decay. Average % weight gain after 30 days was 0.10%

Water Absorption



Service Temperature


-60 degrees F to 180 degrees F

Elastomeric Waterproofing
Crack Bridging
(10 cycles at 15 deg. F)


Meets or exceeds all test criteria No Failure No Cracking


Q-Panel Weather-o-meter

>5000 hours

Softening Point


>325 deg. F

Hydrostatic Pressure Resistance

ASTM D5385

>200 ft.

Intercoat Adhesion


>than adhesion to concrete



Proper mixing and installation is critical to the optimal success of all product.  See Installation Tips, Techdata, & MSDS for more details on our products.  Be sure to contact us with any questions and/or concerns that you have.

For more information on Epoxy.com Products please contact:

A Division of Epoxy Systems, Inc
20774 W. Pennsylvania Ave.
Dunnellon, Florida 34431
Over 300 products,
Since 1980
Florida & Vermont

Office Hours: 9AM-4PM Eastern Time (6AM-1PM Pacific Time).
Closed 12Noon-1PM Eastern Time for Lunch.

321-206-1833   Customer Service - Ordering and Order Status
                          Katey Fontaine, VP - Customer Service Director

 352-533-2167  Technical Support
                         Norm Lambert, President - Technical Support Director 
352-489-1666  Accounting and Administration
                         Debby Lambert, CEO, and CFO

352-489-1625   Fax line to all Departments

Website:  www.epoxy.com

24 hour Hazmat Emergency Telephone Response Service -1-800-633-8253

We accept MasterCard, Visa, American Express, Discover, Wire Transfers, and Cashiers Checks We accept MasterCard, Visa, American Express, Discover, or Wire Transfers.

Copyright 1994-2014 (providing online information about the right product for the right job for 20 years) EPOXY.COM a division of Epoxy Systems, Inc. - Florida and Vermont.  All rights reserved.

Unless other wise agreed upon in writing, buyer is responsible for the cost of shipping.

This information is presented in good faith to assist in determining whether this product is suitable for application. No warranty or representation, however, is intended or made, nor is protection from any law or patent to be inferred, and all patent rights reserved.

Epoxy.com a division of Epoxy Systems, Inc.  (hereinafter known as "Supplier" warrants its products (when properly stored) for the period of time as follows: Epoxy one (1) year; Polyesters, Methyl Methacrylate  and Polyurethanes Six (6) months.  Supplier warrants that its products will be free of manufacturing defects and will be in conformity with published specifications when handled, stored, mixed and applied in accordance with recommendations of Supplier. If any product fails to meet this warranty, the liability of Supplier will be limited to replacement of any non-conforming material if notice of such non-conformity is given to Supplier within the warranty period for the material (as indicated above), or within 1 year of the delivery of materials (whichever is sooner). Supplier may in its discretion refund the price received by Supplier in lieu of replacing the material. No customer, distributor, or representative of Supplier is authorized to change or modify the published specifications of this warranty in any way. No one is authorized to make oral warranties on behalf of Supplier. In order to obtain replacement or refund the customer must provide written notice containing full details of the non-conformity. Supplier reserves the right to inspect the non-conforming material prior to replacement. EXCEPT FOR THE EXPRESSED WARRANTY STATED ABOVE, THERE ARE NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE. SUPPLIER'S OBLIGATION SHALL NOT EXTEND BEYOND THE OBLIGATIONS EXPRESSLY UNDERTAKEN ABOVE AND SUPPLIER SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO THE PURCHASER OR ANY THIRD PARTY FOR ANY LOSS, COST, EXPENSE, DAMAGE OR LIABILITY, WHETHER DIRECT OR INDIRECT, OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. All quotes and sales subject to availability.

Many of our products are made on an individual order basis.   Unless authorized in writing by us in writing before the material is made, there are no returns on items purchased from us, once the order has been processed, and the material made. In the event of authorized returns a restocking charge will be charged in the amount of 30% of the value of the material returned or $150 whichever is greater.  No returns on non-list priced items.  All Returns are for merchandise (store) credit only, no cash or credit card credits.  In the event of a return, buyer is responsible for the cost of shipping and handling in both directions.


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