Patching Vinyl Ester Floors With Novolac

July 28, 2016

A customer writes:

“We have a dairy processing and packaging facility that was built circa 1994.  At the time of construction we chose to install a flooring system which was vinyl ester based with fiberglass mat.  The floor has held up quite well in areas where it had a good bond.  The failures we have seen are in areas that covered either an expansion joint or control joint in the concrete.  In these areas the flooring has delaminated from the concrete.  Where possible we have made a clean cut through the flooring to an area where we had a good bond and left the concrete exposed.  Other failure areas are around floor drains.  We have made repairs with quick curing epoxies in the past but these don’t seem to bond well to the existing vinyl ester flooring. 

“Having a manufacturing facility with only one down day limits our ability to make substantive repairs.  During a search for low or no VOC  flooring systems I you folks.”

I have personally made many thousands of square feet of floor repairs that sounds exactly like the issues and conditions that you are describing.

Here is what I did to permanently resolve the issue, at least in the patched areas.

  1. Cut back the edges of the delaminated areas back to a point where the vinyl ester is well attached.
  2. Prep the concrete under the failed area and the edges of the old material – epoxy.com/surfaceprep.aspx.
  3. Prime with Epoxy.com Product #12 – epoxy.com/12.aspx
  4. Install a trowel coat of Epoxy.com Product #630 – epoxy.com/633.aspx and
    1. Epoxy Mortar Blend aggregate #82 Mortar Blend Aggregate
    2. Allow to cure hard to the touch and cool.
  5. Glaze with a neat coat of Epoxy.com Product #633 with optional Anti-skid – http://epoxy.com/non-skid-additive-polycarbonate-aggregate.aspx

Please email your additional questions to norm@epoxy.com or visit http://www.epoxy.com .


Are Epoxy.com 100% Solids Epoxy Low VOC

June 23, 2016

A user writes: “I have seen a number of your products that are on a list or marked with a tag that says Zero (0) VOCs.  When I look at the data sheet it says that the Epoxy.com product is 100% Solids, but does not say it is Zero (0) VOCs.”

Norm Lambert > Thank you for pointing that out.  You bring up an excellent question.  Epoxy.com Products that are 100% solids (100% active ingredients) do not contain solvent, that means they have no VOCs making them compliant with the toughest Low VOC Standards. I will start updating pages on the Epoxy.com to reflect that in the future.  Until then please rest assured that all Epoxy.com Products that are 100% solids have no VOCs in them.


Monument Repairs with Epoxy

March 9, 2016

A technician who uses a non-Epoxy.com product to repair tombstones wrote me recently looking for help with problems that he was having. He goes on to say that the epoxy that he uses never fails, but rather the stone fails. When a secondary break occurs, the stone always re-breaks about 2 mm (about ¾ inch) above or below the epoxy joint. The epoxy attached to about 2 mm of the stone and holds well.

He asked me if the epoxy shrinks so much that it will ‘ pull away ‘ from the stone it’s attached to, and in his case, it pulls about 2mm of stone with it.

No I doubt it is epoxy shrinkage causing the problem. High quality epoxy has little or no shrinkage. It would have to be a very poor quality epoxy to be shrinking enough to do that.

The reason his epoxy is not working is that it is too rigid. His existing rigid material has a “high modulus of elasticity”. A material with “high modulus of elasticity” is a material that is stiff and/or rigid. A “low modulus of elasticity” material is semi-flexible, and is not rigid or brittle.

T pieces of the stone structure (in this case a tombstone) and pieces not in touch with the ground tend to get hotter and cooler faster than the larger pieces and pieces with ground contact. This is called “differential timing of the event”. For example the top of a tombstone can be heated and cooled on 5 sides, the top and the 4 sides. The base of the tombstone which is buried in the ground has earth or stone on all of its surfaces. This earth and stone tends to keep the temperature of the base more stable by insulating it and slowing the change in temperature. This works much like the insulation in your house slows temperature changes inside your house.

When an object like a piece of stone is heated it expands (gets bigger). When an object cools it contracts (gets smaller). For example 100 feet of concrete will be 1 inch longer once it is heated 100 degrees F. That is why expansion joints are cut into concrete.

In the case of tombstones all the pieces of the same type of stone have very similar if not identical “coefficient of expansion”. Since the pieces are positioned with potentially different timing of heating and cooling there is a “differential timing of the event” (see above). The result is stress areas you are seeing in the closest weakened plane in the stone near the bond line.

Product #2005 was specifically designed for tombstone (monuments) and/or stone bonding, or repair. Epoxy.com Product #2005 is very strong yet it is has a “low modulus of elasticity” (semi-flexible). The low-modulus of elasticity helps to absorb differential movement (two sections of stone heating and cooling at different times), making it much less likely to cause a stress area in adjacent weakened planes.

Camouflage the bond line rubbing stone dust(ground off the original stone or a similar colored stone) into any exposed epoxy material while the epoxy is still “wet”. That way the dust will stick in the wet epoxy making the epoxy difficult to impossible to see.

Please send your additional question and blog ideas to norm@epoxy.com


Epoxy Table Top Resin (Part 2) Installation

February 5, 2016
Pictures of an epoxy table top made from Product #214

Product #214 Epoxy Table Top Resin

This the second part of a 2 part article. In the first writing we dealt with some of the uses of Epoxy.com Product #214  Epoxy Table Top Resin. This article will deal with the installation of the material.

Quick Review

In my last writing I discussed that Product #214 Water Clear Epoxy Casting – Tabletop Resin – Bar Top Resin is an all-purpose, low viscosity epoxy resin system for coating wood and concrete counter tops, tabletops, bar tops and similar applications. It has excellent clarity and color retention. Our clear casting resin and tabletop resin / bar top Epoxy has zero (0) VOC making it essentially odorless and can therefore be used in occupied areas. It de-bubbles and flattens a lot easier than similar materials.

Considerations

The Product #214 epoxy resin is low viscosity. It is typically applied thicker than 1/16 inch thick. Because the Product #214 Table Top epoxy has such a low viscosity (thin) it needs some kind of boarder around the outside edge to create a dam for your main pour. The picture above shows you one way to make that trim decorative. It is easiest and most effective when the piece that will act as the dam will remain in place after the installation. If your application is less than 1/16 inch thick contact our Technical Support Department at 352-533-2167.

Before You Start

Be sure that you have the proper job supplies.

  • Paint stir sticks
  • 3 (5 G) plastic pails
  • Roll of Duct Tape
  • 4 Window Squeegees in various widths
  • Paper 6oz Dixie cups
  • 2 (2 blade) mixing paddles – should be at least 5 inches in diameter and capable of being used in a heavy duty drill
  • Heavy Duty Drill for mixing paddles above
  • 6 (2 inch) paint brushes *check bristles to be certain they CAN NOT be pulled out*
  • Latex (or non latex) rubber gloves
  • Vacuum (Shop Vacuum Quality)
  • Roller Pans (for trim)
  • Roller Pan Liners (for trim)
  • Roller Frame (for trim)
  • Roller Covers (shed resistant – for trim)
  • Roll of plastic to keep buckets on to avoid drips onto floor
  • *Note – Epoxy does NOT come out of fabrics*
  • Go Jo Hand cleaner or fast orange for hands and skin
  • Xylene, MEK, or Acetone for cleaning up hard tools and hard surfaces
  • Electric Hair Dryer or Heat Gun
  • Spray bottle
  • Isopropyl (rubbing) alcohol as high a content as possible (90% or higher)

Preparation

Be sure that your tabletop is level. The epoxy table top resin is going to go water flat. If your table is not flat when you pour it, then the surface of the epoxy will be level to gravity and not with your table.

Put plastic under the table that you are about to coat. This plastic is to catch the resin that drips off the table during installation. I like putting some cardboard on top of the plastic to absorb the resin that drips off so it doesn’t get tracked around the room.

Vacuum the surface to receive the tabletop epoxy to remove any dust, or dirt. Mask all surfaces that need protecting.

Be sure that the trim that you have around the table to hold your resin is tight fitting and securely fastened. Mix a small batch of Epoxy Table Top Resin or Epoxy.com Product #15. Coat the trim piece on the outside of the table and use the resin to seal the joint between the table and the trim piece.

The first coat should be installed thin. The first coat is acting as a primer. Additional coats can be applied thicker but be sure not to apply it so thick that you get puddles or runs. Be sure to wipe any resin that gets on the bottom of the table off. This will save a lot of sanding later. Apply as many coats as you feel you need to get the look that you want on the trim pieces. Be sure each coat of epoxy is applied within 24 hours of the previous coat.

Pouring the Epoxy Table Top

Mix your epoxy in batches small enough so you can pour them quickly and all at once. If you leave a large mass of epoxy in the bucket it produces heat quickly. That dramatically reduces the published potlife. Follow all good mixing practices when mixing the material, at a minimum proper measuring of A and B, mix for 3 minutes, being sure to scrape the sides and bottom as you go.

Individual pours should not be less than about 1/16 or more than 3/8 to ½ deep. If the pours are too thin you may experience fisheyes. If the pour is too thick it might produce too much heat. Two much heat can hurt the aesthetics of your table.

If you need the epoxy to be more than 3/8 to ½ inch deep it should be done in multiple pours. Simply wait for the previous pour to harden and cool and then make your next pour. Be sure to make the next pour not longer than 24 hours in between the coats. If you wait much longer than that you may experience inter-coat adhesion issues

 

Many table top resin manufacturers recommend the use of torches to make their materials lay flat. You do not need to do that with Product #214 table top and casting resin. Our material is thinner than those other materials and will lay flat when applied at the right thicknesses all by themselves.

Make your final pour so that it is full up to the top of your trim pieces and carry it over the edge. That way it appears like all the resin on the top and edges of your trim were from a single pour.

Much of the time Product #214 Table Top Resin tends to de-bubble on its own without a lot of effort to remove the bubbles. The bubbles that you do have can typically be easily removed with a high concentration Isopropyl (rubbing) alcohol and/or your hair dryer or heat gun.

Any bubbles you see should be broken as soon as possible. That means that you will need to watch your tabletop as it sets up and break the bubbles as soon as you see them. You should continue to watch until the resin gets stiff enough that no more bubbles can be formed.

The electric heat gun or hair dryer can be used to blow at the areas to make the bubbles break. The heat helps to thin the resin and the force of the air helps to break them.

The isopropyl alcohol can be misted over the surface. Never spay it directly the isopropyl alcohol directly at the surface but rather mist above the surface at about a 90 degree angle allowing the droplets to hit the surface. Never spay enough to wet the surface. The droplets of isopropyl alcohol help to mechanically break the bubbles while the isopropyl acts as a solvent that evaporates almost immediately after the bubble breaking action.

Summary

Epoxy.com Product #214 Table Top Epoxy Resin is a versatile product that is easy to use. It is designed to be poured where a thicker casting of epoxy resin is required. This epoxy table top resin pours to a water flat shinny surface. It easily releases its bubbles with a little assistance, and cures water clear.

Please keep your questions coming to me.

Norm Lambert
352-533-2167 (Voice)
norm@epoxy.com

http://www.epoxy.com

Additional Resources


Epoxy Cold Temperature

January 29, 2015

Installing Epoxy in Coolers and Cold Temperature

Extend Epoxy Installation Season into Winter

I have spoken on this subject here before but this time of year I get a lot of calls and emails about installing epoxy in cold temperatures. Our company started out as an installation company in Vermont. Summers are very short and winters are very long in Vermont. To stay a viable company, we had to figure ways of working through the winter.

Tenting and heating areas during the winter is time consuming and expensive. The solution is found in resin products that will set in low temperatures. The most durable and cost effective options of installation at cold temperatures is Epoxy and Methyl Methacrylate.

Cold Temperature Cure Resins can also be used as a super-fast setting Resinous Mortar or Coating at normal temperatures. Our Cold Temperature Cure Resins used at normal temperature give you quick turnaround time for small jobs, or larger jobs that require a short turn-around time.

Cold Temperatures Epoxies

Cold Temperature Cure Epoxy Resins allow installation to be done at low temperatures as low as 35°F., expanding your epoxy coating and epoxy flooring installation season. Epoxy.com Cold Temperature Cure Epoxy Resins can also be used in cold storage areas like food processing areas, where the temperature cannot be raised higher than 35° F or so. Normal cured epoxy typically requires 50°F or more.

Depending on how you mix the aggregate into the products below, they can be used as a mortar for overlays, or a grout for sealing between other hardened construction materials.

Commonly Used Cold Temperature epoxies

Product #1 Cold Temperature Cure Epoxy Coating is 100% solids and specially formulated coatings for cold temperature applications. Cold Temperature Epoxy Coating #1 is able to cure at temperatures as low as 35°F. It is has Zero (0) VOCs. Since it has no VOCs, it has no solvent so it meets the strictest possible standard for a low VOC coating. It is often used in coolers and food preparation areas that require constant low temperatures. Product #1 Cold Temperature Cure Epoxy Coating is also frequently used in room temperature applications to meet super-fast cure, limited shutdown needs.

Product #10 Cold Temperature Curing Epoxy Mortar Resin – This product has a low modulus of elasticity (flexibility) and is Low Viscosity. The low viscosity allows heavy loading of the right fillers. The heavy filler loading helps not only to save money, but helps to maintain better thermal coefficient with respect to concrete and steel. The low modulus of elasticity prevents it from being brittle making it less vulnerable to thermal coefficient differences. It also gives it better impact resistance.

You can find more information on cold temperature cured epoxy at: http://www.epoxy.com/EpoxyColdCured.aspx.


Why Use Epoxy.com Products in “Green” Buildings?

August 20, 2012

110614_2044_EpoxyChipFl10.pngEpoxy.com’s 100% solid products (which are most of our product line) are included in many “Green” buildings. The logic for that is this:

1. Epoxy.com 100% solid products have  no VOCs. So you are reducing the carbon emissions.

2. Typical Epoxy.com 100% solid systems have done their job for decades, and there is no reason to believe they will not last for decades more. I personally have jobs that I installed with them that go back as much as a third of a century, that are not even starting to show signs that they will need replacement. That is the ultimate in reuse.

3. There is no need to recycle a product that can be reused for decades, but you can use recycled materials like glass aggregate in the epoxy matrix.

Epoxy.com encourages our customers to order material as they need it and to use all their materials before their expiration. That is why we do not require large stocking orders from new dealers, like most other companies. We want our customers to use up material they buy from us and not have any for it run out of shelf life. However, if Epoxy.com products do run out of shelf life, they are typically mixed and cured before disposal as is consitered in under most if not all local regulations as inert as common trash.

You can find more information about Epoxy.com Zero (0) VOC products at: https://www.epoxy.com/zero_voc.aspx

www.epoxy.com – Epoxy.com Home Page.

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Tip for today.Epoxy.com Novolac Epoxy

June 28, 2012

Tip for today:  Epoxy.com #633 has excellent chemical resistant properties. http://www.epoxy.com/633.aspx We recently had an inquiry with the installed product coming in contact with hundreds of gallons of sulfuric acid in a major spill situation.  We were contacted to see if Epoxy.com #633 had been compromised. The answer is no.  As long as the material has been properly installed without pinholes, all that is required is decontamination of the exterior surface of Epoxy.com #633 coating.  No removal or reinstallation of Epoxy.com # 633 will be required. Epoxy.com #633 is specially formulated to prevent a spill from become a catastrophe.

That was a great question.  Please keep your questions coming.

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