Basement Waterproofing with Epoxy

September 4, 2014

Many homes and businesses experience leaky basements year after year. The worse time is in the spring after winter accumulation of snow. There are a number of prudent things that you can do to improve drainage against your foundation like roof gutters, grading and improvement of drainage. The recommendations here do not replace that conventional wisdom. It is designed to augment and improve upon these conventional methods.

The following article will be 1 of 2. This one deals with Block wall foundations. The next one will deal with poured wall foundations.

Waterproofing Block Wall Foundations with Epoxy

One of the nicest features of most of our epoxies are that they are virtually 100% waterproof. Water simply cannot pass through a good healthy layer of properly applied concrete, block, wood etc. Epoxy also has an incredible bond to concrete, cement, wood and many other construction materials. The bond strength of epoxy to concrete and cement is greater than the tensile strength of the concrete. That means on properly prepared concrete, epoxy cannot be removed without pulling concrete with it. The same is true about wood.

Considerations in Waterproofing with Epoxy

All this gives you the perfect combination to make a block wall watertight. There are limitations however:

  1. In an ideal world the epoxy should be applied on the positive pressure side of the wall, the outside. This way the pressure of the water is pushing it into the wall. That helps to mitigate the likelihood that you get so much pressure on the concrete block that you fracture the block. Typically by the time you know you have a leak you are already backfilled and landscaped so 95% of the time it is not practical to do on the outside of the wall. So you do it on the inside instead.

    Water exerts a pressure of less than ½ psi per foot of water depth and most basement walls are only 8 foot high, so you would typically only see 4 psi. So it is unlikely that you have a pressure greater than the tensile strength of the block. So doing it on the inside is typically the only economical alternative.

  2. The Product #1W Epoxy is much more flexible than the concrete block and mortar, but if the mortar or concrete gets any significant cracks in it, it will crack through the coating. On the other hand, the system is very easy to patch if it does crack. We also make a wall grade version of our crack isolation membrane Epoxy.com Product #32 – www.epoxy.com/32.htm – which can reduce the potential for small cracks (which are the most common).
  3. A clean substrate is required for maximum effectiveness – www.epoxy.com/surfaceprep.aspx. For technical support contact me at norm@epoxy.com or 352-533-2167

Installation of Epoxy Waterproofing on Block Walls

Once the wall is clean, you need to point-up (fill) any cracks, bad mortar joints, and larger holes that are in the block. Some people use conventional mortar and wait 28 days for it to cure as per the American Concrete Institute. This is a very inexpensive way to do it, but can be affective if done properly. A more effective way to insure the right results is the use of Product #2005 Epoxy Gel Adhesive – www.epoxy.com/2005.aspx. That insures that you have a tight bond over the cracked areas and have already produced a tight waterproof seal in that area. Also the #2005 Gel Epoxy is semi flexible and allows more movement before cracking that conventional grout. The #2005 allows your coating to be installed the day after the #2005 is applied.

Once the cracks and holes are repaired, much of your work is done. You simply apply 1 coat of Epoxy.com Product #899 – www.epoxy.com/899.aspx – Epoxy Primer and allow to dry overnight.

After the primer has cured overnight you can apply the optional crack isolation membrane Product #32W – Wall Grade, or proceed to the coating below. If you do apply the crack isolation membrane 2 coats of the membrane are best. One advantage of the two coats of membrane is that typically you can reduce the number of coats of top coating that is required to seal the block. As you put on the membrane be sure to check to see that the holes in the block are being filled as you go.

Depending on the porosity of your concrete and if you used the crack isolation membrane above you will want to apply 2-4 coats of 1W epoxy wall coating. As you put on each coat check to see that the holes in the block wall are being filled.

Summary of Waterproofing Basement Walls with Epoxy

In conclusion: Leaking basements are a major problem to many structures in the spring. The easiest time to repair them is during the winter when there is little or no leakage. Epoxy.com epoxy coating systems can affectively and economically solve most basement leaking problems. The final product is a hard attractive ceramic like finish that does not require additional painting or other finishes over it.

Next Issue: Waterproofing Poured Wall foundations with Epoxy.

Additional Information on Epoxy Coatings

Product #1W (Wall Grade)  Epoxy Wall Coating – a general purpose epoxy wall coating

Product #2W (Wall Grade) Cemical Resistant Epoxy Wall Coating 

Product #32 (Wall Grade) Flexible Epoxy Membrane

Where to Start when installing epoxy.


Improved Epoxy Gel Adhesives Added to Epoxy.com

May 29, 2014

What are Epoxy Gel Adhesives

Epoxy Gel Adhesives are thickened 100% solid 2-Component Epoxy Resin and Epoxy Hardener systems. Epoxy Gel Adhesives come in various viscosities from whip cream consistency to clay consistency. Some Epoxy Gel Adhesives have a longer working time, and slow set. Some Epoxy Gel Adhesives have a short working time and fast set.

Epoxy Gel Adhesives can have a “high modulus of elasticity” (rigid), or a “low modulus of elasticity” (flexible to semi-flexible). All the Epoxy Gel Adhesives that we sell are very strong. Our Epoxy Gel Adhesives when applied to most common construction structural material that are properly prepared have a bond strength to the substrate greater than the tensile strength of the material you are bonding to. In other words if you go to pull it off from the substrate that you are bonded to, the substrate will fail before the bond of the Epoxy Gel Adhesive will fail.

Uses for Epoxy Gel Adhesives

Epoxy Gel Adhesives are one of the most versatile tools in the construction industry. Epoxy Gel Adhesives are useful for bonding concrete to concrete, wood to concrete, wood to wood, and for that matter most typical construction structural materials to other construction structural materials. Epoxy Gel Adhesives are also useful in patching and repairing inperfections in concrete, wood and steel. Epoxy Gel Adhesives have also successfully been used to repair wood damaged by termites, wet rot, or dry rot. Epoxy Gel Adhesives are used in setting dowel bars, anchor bolts, and ports for epoxy injection.

Newest Epoxy Gel Adhesives Added to Epoxy.com Product line.

Product #2005 Low Modulus Fast Setting Epoxy Gel is a two component 100% solids designed for shallow repair on either vertical or horizontal surfaces. This product is easy to mix and use and has the consistency of Vaseline petroleum jelly. Additionally, the product, because it is a 100% solids product, can be applied thicker on horizontal surfaces when required.

Product #2006 – Epoxy High-Mod Gel Adhesive and Bonding Resin is a 100% solids high-mod epoxy gel adhesive used for vertical and overhead bonding applications and structural repairs. Epoxy High-Mod Gel Adhesive and Bonding Resin – Product #2006 is also used as a grout for anchor bolts, dowels and rebar. Epoxy High-Mod Gel Adhesive and Bonding Resin – Product #2006 Meets ASTM C881 Requirements for Type I, Type II, Grade 3, Class B, C, D, E.

Product #2007 Epoxy Fresh Concrete to Hardened Concrete Adhesive is a two component, 100% solids epoxy resin system designed to bond new concrete to old and other materials to concrete. It has a convenient 2:1 mix ratio, by ASTM C-881-90, Types I, II, IV and V, Grade 2, Class “B” and “C” volume with a viscosity similar to heavyweight oil. Epoxy Fresh Concrete to Hardened Concrete Adhesive #2007 (adhesive) exceeds the requirements of ASTM C-881 Type II, Grade 2, Class “B” “C” “D” and E.

Product #2011 Low Modulus Fast Set Epoxy Gel is a two component 100% solids polymer system designed for applications where a resilient joint material is needed. The two component material (standard) is supplied with a gray component and a clear component. Product #2011 was developed for plural component pump equipment, and is available in cartridge units.

Product #2704 Epoxy Gel Super Fast Cure is a fast setting, 100% solids epoxy crack gel and filler used to line, patch, or repair floor and wall surfaces. Epoxy Gel Super Fast Cure Product #2704 is the ideal material for repair of surfaces damaged from environmental or chemical attack. Epoxy Gel Super Fast Cure Product #2704 can also be used as a base material beneath coating, slurry, and mortar systems to repair before coating.

Product #2707 Splash Zone Epoxy and Underwater Epoxy Paste is a moisture-insensitive, two-component, 100% solids epoxy-resin system. Splash Zone Epoxy and Underwater Epoxy Paste Product #2707 is mixed at a 2:1 ratio, by volume, this product produces a paste-like material that is ideal for protection or restoration of concrete, steel and timber piles and other structural elements in marine environments.

Limitations

Epoxy.com does not recommend using any epoxy gel adhesive to bond anything to a ceiling without reliable mechanical methods of attachment as well.

More Information on Epoxy Gel Adhesives

Contact Epoxy.com Technical Support by phone 352-533-2167 or email info@epoxy.com for more information.

 


Epoxy Chip Floors

April 16, 2014

Heavy traffic on floors often make the use of decorative flooring products impossible. To make this possible we created System #315 Seamless Epoxy Multi-Colored Flake Chip Floor Resurfacing System. Our #315 Chip System creates a beautiful, durable, and affordable floor that is easy to apply by both professionals and do-it-yourself enthusiasts.

Mvc-263s.jpg (41651 bytes)

A Vermont Interstate Rest Area after over 15 years

What is new and unique?

At last there is a high quality seamless floor finish which can be provided in every desirable color combination. This system is easy to use, by any skilled do-it-yourselfer or coating professional. For potential customers, both commercial applicators and the do-it-yourselfer, the final result is most certainly beautiful, affordable, and its durability insures the product to be long lasting, waterproof, easy to clean, and maintenance free.

System #315 Seamless Epoxy Multi-Colored Chip Flooring is available in virtually limitless color combinations. If your job is big enough our chips can be pigmented to match all the colors of many major paint companies. We can color match our base coat colors as well. Unless the pigments for your custom colored 315 Basecoat are unusually expensive we can color match for a modest small batch charge, or at no charge for larger orders.  Even our standard color pallet offers you over 45 chip colors that can be blended in any combination and percentage as you want.

chip Flooring picture

Water Plant after more than 15 years

By matching the base coat color in the chip, you make the system much less prone to error.  If you should happen to miss a small spot on the floor the base color shows through, looking like it is just more of that chip in that area.

System #315 chips are also available in 7 sizes ranging from a 1 inch chip down to 1/32 inch chip.  Smaller chips give the look a lot like epoxy quartz flooring. The various colors and sizes allow you to give your floor any number of looks like stone, terrazzo, colored quartz, or vibrant linoleum.

Our clear glaze coat does not yellow quickly like other epoxies.  We have some jobs that have been around for 30 years or more where no yellowing can be found, not even under the urinals in high school bathrooms. This kind of durability is perhaps the most important quality of the #315 Chip Flooring System.  Anyone can provide you with a flooring system that is attractive today.  The #315 Chip Flooring System is the flooring system you need if you want it to stay like that for years to come.


Epoxy Stone Overlays

April 7, 2014

Epoxy Stone

Installation, Repair, and Sealing of Epoxy Stone Overlays


Early Spring Special

Place your credit card order and authorize it on or before April 11, 2014 for Product #17 Epoxy Stone Adhesive or Epoxy.com Product #15 for Reglazing Stone and get it at 5% off from contractor pricing. You must mention the code “EpoxyMyStone”, to get this discount.

Epoxy Adhesive for Bonding Pebble Stone Together

Product #17 Epoxy Adhesive for Bonding Stone Overlays is a two component, 100% solids high-mod epoxy adhesive used for bonding stone and other aggregates in all types of flooring applications. Some uses of Epoxy.com Product #17 Epoxy Adhesive for Bonding Stone Overlays would include patios, pool decks, walkways and other areas where a long wearing and decorative system is desired.

Product #17 Epoxy Stone Overlays give you the beauty of a natural looking shinny stone, without the hassle of the stone needing the constant attention of loose stone. Water actually passes through the system. The #17 Epoxy Adhesive and stone give you a carpet of stone that allows the water to run down away from your feet.

Installation Product #17 Epoxy Adhesive for Bonding Stone Overlays typically uses the #17 Epoxy Stone Adhesive, and clean hard dry stone. A 3 gallon unit of Product #17 will typically mix with about 400 lbs of stone.

Glazing Pebble Stone Epoxy

Product #15 Chemical Resistant Epoxy Floor Resurfacing System  is typically used for resealing epoxy bonded stone, because it oxidizes much slower than other epoxies, and usually last much longer than other epoxies used for reglazing epoxied stone pebbles.


Epoxy.com Resin Products and Systems

April 4, 2014

Today’s Resin

The Right Resin System for the Right Job


We want you to have the “Right Resin Product for the Right Job”, so we are always looking to improve our systems with new epoxy technology and new epoxy resin formulations. Today we are featuring a Methyl Methacrylate MMA not an epoxy.  We are not just about epoxy but we want you to have the right resin system for your job.

 

MMA Concrete Crack Healer and Sealer

684LV – MMA CONCRETE CRACK HEALER and SEALER replaces Epoxy.com Product #685.  MMA CONCRETE CRACK SEALER Product #684LV is a 100% reactive ultra-low viscosity methyl methacrylate resin used as a penetrating crack sealer or to fortify extremely porous concrete substrates. MMA CONCRETE CRACK SEALER Product #684LV is typically used on bridge decks, parking structures, and floors or as a general penetrating sealer to prevent moisture intrusion.

One of the major advantages of MMA CONCRETE CRACK SEALER Product #684LV is its very low viscosity.  It is about the viscosity (thickness) of diesel fuel, so it soaks into the concrete and down into small cracks quickly.  It hardens in about an hour.  When it hardens it hardens with a bond strength to clean concrete that is greater than the tensile strength of that concrete.  In other words you have just chemically welded the two sides of the crack together, so that it is as if the crack had never happened.

The very fast setting time allows you to install you flooring or sealer system the same day that you repair your crack. At Epoxy.com we are all about systems.  Combining the right resin product to create the right system for your job.

 


Epoxy Products used to Repair Plant and Shop Floors

November 7, 2012

Industrial Floor Maintenance with Epoxy

Preventing and Fixing Deteriorating Floor Joints and Potholes

It is said that there are two types of concrete floors, those with cracks and those that are going to crack. Cracks and potholes in plant and shop floors are a major problem to safety and aesthetics. Here we will discuss what causes them. We will also discuss how to repair them quickly and economically. For those floors that have not cracked we will discuss how to minimize or prevent the cracking and potholes.

It is a common misconception that heavy loads on the floors cause most flooring problems, and so it cannot be prevented. If you are building a new plant or shop floor there are steps that will help to prevent most flooring problems. For existing flooring problems we will discuss how to fix the problems and prevent the problems from getting worse.

Causes of Cracking and Potholes in Shop Floors

Most concrete flooring problems are caused by one of the following:

  1. Improper installation of the concrete, or poor concrete
  2. Improperly cut expansion joints
  3. Steel and hard rubber tires eroding unfilled expansion joints, random cracks and potholes
  4. Chemical attack

Proper installation of Concrete in New Plant and Shop Floors

For new construction make sure you specify and get high quality high strength concrete. Create a box-out form around beams, pipes and other penetrations that go through your floor. Be sure that the corner of your box-outs line up with the saw-cut joints that you will be putting in the floor. Penetrations through the concrete cause a “weakened plain”. A weakened plane is typically created at the shortest distance between the box-outs. That is typically from the corner of one boxed out area to the next closest boxed out area.

Do not allow your concrete finisher to over finish your concrete. Concrete finishers tend to over-finish concrete because they are concerned that if they don’t the owner will not like it. Over-finished concrete does look better than properly finished concrete until the over finished starts to deteriorate. The deterioration cause by over finished concrete typically does not take very long to occur.

The best finishing of concrete leaves it flat, but does not bring up the “cream” in the concrete. It will not look as shinny and smooth but concrete that is not over finished will look more attractive and be more functional over time. Bringing up the “cream” in the concrete is done by over working the mix or adding too much water or adding water to the batch. The “cream” consists of dust from the aggregate and Portland cement.

This “cream” creates a great looking finish at first, because it is so weak, it chips easily. This “cream” has too high a water content so you tend to get micro-cracking in the surface. When your concrete finisher is power troweling your concrete and starts splashing water into the surface as he is finishing it he is about to over trowel the concrete and bring up the cream. It is time to get the concrete finisher to stop troweling.

Water curing of the concrete is what most state highway departments require to cure concrete bridge decks. Wet curing is favored over other methods by the US Army Corps of Engineers. Wet curing will help to stop the top of your concrete from drying out too fast. If you cure with a curing compound instead of water, you will need to remove the curing compound to install high quality coatings and sealers.

Proper curing will help to prevent “curling” of the concrete slab, and help to prevent micro-cracking (crazing) of the surface. Curling is caused when the top dries and shrinks before the concrete underneath dries and shrink. This works much like a bimetallic strip used in a thermostat, the concrete will twist upwards or curl. Proper curing helps to prevent concrete curling and the cracking that will result from it. Another major advantage of wet cured concrete that is not over finished is that there is much less surface preparation required when you go to coat or seal it.

Cut expansion joints often enough, wide enough, and deep enough. Typically the best way to cut concrete down to 16 foot by 16 foot squares or even smaller. The larger the spacing between saw cut joints the more likely you are to get a random crack where you do not want it. The concrete should be cut-up as square as possible. Care should be taken that all the saw cut joints line up with each other in a checkerboard pattern. Be sure the cut is at least 1/3 of the way through the slab, and that the cracks are 1/4 inch or wider. That way all the plastic shrinkage (drying) cracking should occur under the saw-cut relief joint.

Using Epoxy to Protect New Plant Shop Floors

Seal or coat the concrete to protect it against wear and chemicals. Epoxy.com Product #223 Water Based Curing Compound, Sealer and Bonding Agent is a two component water based epoxy curing that is used to both cure and seal concrete. Epoxy.com Product #223 www.epoxy.com/223.htm is an excellent choice for installers that want a long pot life product that is easy to use. Epoxy.com Product #223 is an excellent choice as a sealer where waiting 28 days to seal the concrete is not an option. Product #223 can be installed as early as early as 7 days after the concrete is poured. Giving you early protection.

Allow the concrete to dry for 28 days so that most of the shrinkage at the expansion joint has taken place. Clean the crack thoroughly, then install a bond breaker “rope” in the bottom of the joint. Then fill the joints with Epoxy.com Product #11 Saw-Cut Control Joint Fillerwww.epoxy.com/11.htm. Epoxy.com Product #11 Saw-Cut Control Joint Filler is a 100% solids zero (0) VOC, flexible epoxy joint filler for saw-cut joints of concrete slabs on grade, or to repair existing slabs.Random cracks and improperly filled expansion joints are where the potholes in plant/shop floors are born. As steel and hard rubber wheels pass over these unfilled cracks and joints it hammers the edge of the crack in the direction of the travel. This action cause small chips. As the process continues small chips become larger chips. Soon you have a small pot hole and the damage continues to accelerate.

Epoxy.com Product #11 Saw-Cut Control Joint Filler absorbs the impact and shock of heavy loads and steel wheeled traffic, preventing erosion of control joint edges. Epoxy.com Product #11 prevents the “jack-hammer” effect on the joint that you are traveling towards. This will help prevent most if not all of the “pot-hole” effect that most plant floors see developing at their expansion joint over time.

If you want to seal your floor using a 100% solids epoxy use Epoxy.com Product #899 – www.epoxy.com/899.aspx for sealing the concrete. Epoxy.com also has a wide variety of shop floor coatings and trowel down systems. Contact Epoxy.com Technical Support Department with your specific needs for a recommendation.

Repairing Random Cracks in Floors with Methyl Methacrylate

Random cracking in plant / shop floors can easily and economically be repaired with Epoxy.com Product #685 Liquid MMA Polymer Crack Repair Resin a penetrating gravity feed crack healer for concrete. It is a two component Methyl Methacrylate resin system that polymerizes in place. The extremely low viscosity will penetrate into concrete cracks as fine as 0.003 inches. Epoxy.com Product #685 welds the crack back together making the concrete as strong as it was before it cracked.Repairing a Shop / Plant Floor with Epoxy After it is Damaged.

For those who have already built their buildings you can still fill all the joints especially in the traffic areas with Epoxy.com Product #11 – www.epoxy.com/11.htm. Filling the joints with Epoxy.com Product #11 will prevent additional potholes from forming in areas where there are none yet. To fill the “potholes” in level areas you will typically want Epoxy.com Product #25 – www.epoxy.com/25.htm. Epoxy.com Product #25 is a 100% solids epoxy resin and specially selected aggregate system. Units are preproportioned for ease of mixing and use on the jobsite. Epoxy.com Product #25 is a flowable, self-leveling grout, with handling and physical characteristics superior to similar grouts. Epoxy.com Product #25 is conveniently packaged and makes “pothole” repair in your shop/plant floor quick, easy, and economical. The Epoxy.com Product 25 is the best material when you are looking for a convenient packaging and is easy to use for small jobs.

For larger projects or surfaces that have a slope so you cannot use a self leveling material should use Epoxy.com Product #10 – www.epoxy.com/10.aspx and Epoxy.com Product #82 Mortar Blend Aggregate. With the right mixing equipment you can put up to 100 pounds of #82 into 1 mixed gallon of Epoxy.com Product #11. That gives you a nice stiff mix, and excellent economy. Epoxy.com Product #10 is a low-mod material, with high strength. That makes it perfectly suited for outdoor patching. Epoxy.com Product #10 is the best material for most large jobs.

If you cannot allow overnight for your epoxy patching material to cure you will want to use Epoxy.com Product #680 Polymer Concrete. Product #680 is a methyl methacrylate reactive resin concrete used for repair of concrete structures with a minimum of downtime. Epoxy.com Product #680 develops strength rapidly. Epoxy.com Product #680 Polymer Concrete can be put in service in as little as one hour even at temperatures below freezing. The Epoxy.com Product #680 polymer concrete produces extremely high strengths and is chemical resistant. Epoxy.com Product #680 is prepackaged for easy mixing and placing at the job site. Epoxy.com Product #680 Polymer concrete cures hard in about 1 hour, allowing for quick turnaround of the area being patched. Epoxy.com Product #680 is the best material when you need the patch to set in about an hour.

If the concrete has a lot of pitting in it, you can apply a “scratch-coat”. A “scratch-coat” is done as follows:

1. Carefully measure epoxy resin and hardener. Mix for 3 minutes.

2. Add aggregate to the mixed resin and hardener above, and mix completely.

3. Pour out the epoxy resin hardener and aggregate blend onto the concrete.

4. Then pull a very tight troweled coat over the entire surface, filling the low spots while scraping as much epoxy resin and aggregate material as possible away from the high spots.

The material for a “scratch-coat” is with Epoxy.com Product #10 – www.epoxy.com/10.htm and Epoxy.com Product #78 Self-Leveling filler. Epoxy.com Product #10 and Product #82 mortar blend aggregate is the best blend for building ramps and smoothing uneven transitions between slabs.

Just because your floor is already damaged by chemicals, doesn’t mean it is too late. Most floors can be saved with proper patching (as
discussed above) and a chemical resistant flooring system installed over the patching system. Contact Epoxy.com Technical Support for assistance.

Additional Related Reading

The installation of these materials above are beyond the scope of this page. Here are some areas to explore this in more detail:

Do with Epoxies

Don’ts with Epoxies

Surface Preparation

Chip Flooring Installation Guide

Coating Installation Guide

Coatings Calculator – for roller applications

Links to popular systems used in residential and commercial construction resin work


Air Plane Hangers and Garages

Coating Systems

Outside Decks and Drive Ways

Product Catalog

Bonding Systems

Waterproofing

Chips Flooring


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