Aug 17, 2017

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Solvent-Based Vs. Water-Based Coatings

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17/08/2017
Solvent-Based Vs. Water-Based Coatings

If you’re wondering what the difference is between Solvent-based vs. water-based coatings, this post is for you. Often times coatings will take their name from the resin or binder from which they are made from. Urethanes, alkyds, and epoxies are examples of resins that will give a coating their name. These are the only parts that make up the coatings. Additionally, besides additives, which could have led a coating a certain property, and the pigments that give color, coatings also have an element that will dissolve it into a liquid to make it easy to apply.

This liquefying agent normally is a chemical solvent or water. Which is where solvent based and water based names come from. Which product is right for the job will depend on what circumstance it is being used for. Normally, one isn’t so much better than the other type, but in truth they actually perform much differently based on their situations. Both options will exist within the coating arsenal.

Water based coatings

Water based paints are about 80% of the paints sold today. There isn’t a doubt that this is because of the attraction to water based products, whether it is heavy duty protective coatings or interior house paint it has fewer odors.

When you are working in a poorly ventilated or confined area, the evaporation of solvents can be uncomfortable for anyone and hazardous to anyone’s health. It is for this reason that many projects have fuel storage tanks and railroad cars use water based coatings. This reduces the concentration of flammable vapors and materials that often build up in confined spaces.This doesn’t mean that using them will replace OSHA approved confined space safety measures.

Compliance for environmental areas is also important reason for selecting a water based coating. Most solvents will eventually evaporate into what is known as volatile organic compounds (VOCs). State, national and regional governments regulate VOCs by limiting how must businesses are allowed to emit during a certain timeframe. The EPA sets national rules for the VOCs, but there are some states that have made restrictions tighter which shows the needs to limit emissions.

Water based coatings don’t actually contain 0% solvents. Many will contain co-solvents, which are just solvents that are in lower concentrations and are meant to push the water out of the coating while it dries. Because water based coatings have little to no solvents, they are a great way to lower the VOC output. For some companies, this means spending less on environmental compliance advising or keeps them from having to pay large fines for meeting or exceeding VOC quotas that have been placed for that area.

Solvent based Coatings

These particular coatings are made up of liquifying agents that evaporate through a chemical reaction with oxygen. Normally moving air around solvent based coatings will actually begin to speed up reaction with the air which reduces the drying time.

These particular coatings have a really big advantage over water based paints. They can handle various environmental conditions like humidity and temperature during curing. Humidity can prevent the water in water based coatings from evaporating which makes them impractical in certain areas.

Water based paints are also a challenge for surface prep during any coating projects. Water, even though it is a great substitute for harsh solvents in certain situations, is also a key component for corrosion, the entire reason for industrial coatings to start with. If water makes contact with the substrate before the coating is ever applied, spot rusting may start to happen. To make sure this doesn’t happen, water based coatings have to be formulated so that all the water is drawn out of the surface film before corrosion happens. This isn’t a consideration for solvent based coatings.

In conclusion, although water based coatings are good option for jobs in confined spaces and continuous coating use, they do have weaknesses. Jobs that are in humid, open conditions like those in recoating projects, may benefit still from having the right type of coating. If you want to find which product would be best for your project, we would love to have you contact us for more information.

Phoenix Valley Coatings by All Kote Lining Inc.

If you have structures such as cooling towers, chillers, water basins, water fountains, or other structures that need to be lined with coatings in the Phoenix Valley, All Kote Lining Inc. has the team, skills, and tools to get the job done right.  Quality coatings will extend the life of your HVAC and Industrial Equipment and improve the performance by avoiding fouling, scaling, and other energy robbing problems.  To learn more about the coatings we offer and the types of applications we use them for, please get in touch with our friendly team.

Call Today – 480-966-4446

Outdoor Water Fountain Repair Tips

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Outdoor Water Fountain Repair Tips

Water fountains are a great visual centerpiece for public spaces, businesses, and residential properties. As they are many times the focal point of a landscape they need to be maintained and kept beautiful.  Read through our outdoor water fountain repair tips.  These will cover water fountain cracks and other issues that degrade the function and appearance of your water fountain.

How To Repair An Outdoor Concrete Water Fountain

An outdoor water fountain can be a great addition to landscaping, coming in various sizes, shapes, and materials. However, with time the elements are able to affect the water fountain, causing cracks or chips. The majority of fountain cracks are repairable; given they are caught prior to being a major crack. The material for repairing a fountain crack will depend on the fountain material. For example, a concrete fountain is often repaired with epoxy-based patches, while fiberglass or metal fountains are best repaired with waterproof silicone.

Below are 8 steps to repair your outdoor water fountain:

  1. Power down the fountain pump, drain the water out of the fountain. You will want the fountain to sit without water for about one week, allowing the fountain and crack to be completely dry. If rain is expected, cover with a tarp to prevent wetness.
  2. Identify the cracks that will need repairing. Smaller cracks might not be easily visible when wet, but after drying it is easier to locate the small cracks. If you have a concrete fountain, cracks will be white when dry.
  3. Use a stiff-bristle brush for cleaning cracks, this removes any dirt or debris that got trapped within the crack. If dirt is not removed, it can reduce the effectiveness of sealant used to bond the cracks.
  4. Using a chisel, slightly open cracks to provide room for the sealant to sufficiently penetrate and harden. Other tools can be used if needed. You should avoid applying excessive force, as this can result in more damage. Using the brush, remove any debris.
  5. Prepare your sealant material. If an epoxy-based patch is being used, you will mix the components together so they can start the curing process. For silicone sealants, you will use a caulking gun.
  6. When you apply the sealant, ensure the cracks are fully filled. Using a putty knife, you can make sure the cracks are penetrated with the sealant, so cracks are fully covered with an even coat.
  7. You will need to give the sealant the proper period of time for drying. Then, if needed you can sand the sealant to provide an even surface inside the fountain. If desired, you can apply paint or waterproofing concrete sealant.
  8. You are now ready to refill the water fountain and power the pump on. You will want to monitor your fountain to ensure the repaired cracks do not leak, and that no new leaks have appeared. If you see new leaks, this can be a sign of additional cracks needing repaired, or a leak in the fountain plumbing or pump.

Things You Need:

  • Chisel (optional)
  • Stiff-bristle brush
  • Caulking gun (optional)
  • Epoxy patch, silicone based sealant or other type of sealant
  • Sandpaper (optional)
  • Putty Knife
  • Paint or liquid concrete sealant (optional)

Water Fountain Repair Tips

Here are the most common problems with water fountains and the solutions to fix them. Also see our outdoor water fountain troubleshooting guide.

Finding & Repairing Leaks

Leaks in water fountains waste water which needs to be replaced.  Locating the leak can be a little tricky, carefully check your fountain over and visually inspect it for leaks. If that doesn’t work you should let your water sit for about a week.  The cracks in your fountain should show up as white areas around the base.  When your fountain is made from fiberglass or stone you can repair these leaks with clear silicone.  This is a similar repair to those done on aquariums.

Broken or Clogged Water Pumps

Water fountains mean water which moves, and it doesn’t do that with a water pump that is out of commission. Many times when water moves slowly or stops it can be a clogged filter. It should be cleaned periodically to keep the water moving freely and reduce strain on your water pump.  Water fountains are typically outdoors and these filters can have leaves, twigs, trash, or any kind of debris which clogs the flow of water.

Broken Fountain Repair

From time to time fountains will be damaged from kids, landscaping crews, or other types of visitors.  Fountains can be repaired with quality epoxy.  Find a epoxy rated for your type of material and has a strong holding strength.  Mix it up, apply it to the broken section, set it back where it belongs and hold it for several minutes. Let the section dry once you have got the piece to stay.

Stone Fountain Chip Repairs

Stone water fountains can chip under blunt force, but can be fixed easily.  Fountain owners can use a blend of mortar to fill in any chips on the fountain. Follow directions on the product you purchase and ensure that it does not have large stones that you typically find it cement. You will want to be able to create a smooth surface with a trowel and allow it to dry.  If it isn’t exactly the same color as your stone you can paint over it to help it blend in and match.

Sealing Old Concrete Water Fountains

Old concrete water fountains have the same challenges that most concrete structures have, cracks and penetration into the concrete.  This can cause spalling, which is when water reaches and corrodes the metal rebar inside the concrete and it expands.  When this happens it causes sections of concrete to fall off the surface. To prevent this waterproof sealant is important for any water holding concrete structure.  You can hire a water fountain restoration company which can come and apply quality sealants which will protect your water fountain.  These waterproof sealants are long lasting and will help extend the life and beauty of your fountain.

Resin Water Fountain Damage Repairs

Some water fountains are made from resin and need repair when they have leaks or pieces break off. All you need is some fiberglass cloth and resin to repair these problems.  Apply the cloth and resin over the cracked or broken areas, allow it to dry, and paint if needed. Make sure the area is completely dried and cured before you add water back to your fountain.

Outdoor Water Fountain Repair In Arizona

If your outdoor water fountain is damaged, leaking, and needs to be resealed with a quality coating All Kote Lining, Inc. is here to serve you.  Our high quality and durable coatings provide reliable and long lasting leak protection.  The coatings we install are rated to withstand the water and chemicals you use to keep the water clean in your fountain.  Our team can help you extend the life of your fountain and help it stay looking great! For Outdoor Water Fountain Repair In Phoenix, give All Kote Lining a call today at 480-966-4446.