Frequently Asked Questions about MicroGlass

Thinking About Trying this Unique Product?

Here are the simple answers to the most commonly asked questions regarding the unique MicroGlass Pool Plaster Preservation and Renewal System.


  1. Is this for plaster only? Or can it also be used on pebble and other aggregate interior finishes?
    • The unique technology of MicroGlass works on just about any type of cementitious product. That includes:
      1. Essentially all brands and configurations of white pool plaster / Marcite.
      2. Essentially all brands and variations of polished quartz  and other polished finishes.
      3. Essentially all brands and variations of exposed aggregate interior finishes, including pebble and quartz.
    • It also works on concrete decks, concrete pavers, some stone pavers, and many other stone and concrete products (as long as they are not already sealed or painted).
    • MicroGlass is NOT recommended for new, smooth-troweled colored plaster at this time.

  1. Why can’t I use MicroGlass on new colored plaster?
    • We’ve found that if the plaster has not yet cured, the powerful penetrating action of MicroGlass may interact with the color pigments, potentially changing or reducing the color intensity.
    • If the colored plaster has been cured for 30 days or more, then there is no interaction with the pigment, and it is perfectly fine to use.

  2. Will this affect the warranty from the plaster or aggregate interior manufacturer?
    • Interior finish manufacturers should be delighted to have you apply our product, because it will certainly increase the lifetime and enjoyment of their product, while also reducing the likelihood of plaster damage or problems during chemical startup. Nonetheless, you should check with your manufacturer to see if this will have any effect on the warranty.

  1. Who can apply this product?
    • It’s a simple application process which can be handled by just about anyone, including homeowners, provided they follow the written and video-documented procedures.
    • Note – instructions are available in English and Spanish.

  1. Is it possible to see this product applied on someone else’s pool first?
    • YES! Please call (813) 265-3426 (or use our contact us form) to make arrangements to see the product in action. (NOTE – This may require travel and schedule flexibility on your part.)

  1. What if there’s a problem with the finish?
    • Just contact us. Our product is guaranteed to work when applied properly.

  1. How much longer will my plaster last?
    • This is somewhat challenging to answer because pool plaster lifetimes tend to vary quite a bit based on composition, manufacturer, maintenance, geography, and other factors. (For example, pool finishes in Southern California tend to last longer than on pools in the northeast.) However, as a general rule, MicroGlass will typically enable your pool interior to last at least 50% longer than it would have under identical conditions without MicroGlass.
    • As a generality in the US:
      1. A typical pool plaster will normally last 8 to 12 years. If conditions are kept the same, the 8-year plaster should now last at least 12 years, and the 12-year plaster should now last at least 18 years.
      2. A typical pebble finish will normally last 10 to 15 years. If conditions are kept the same, the 10-year pebble finish should now last at least 15 years, and the 15-year pebble finish should now last at least 22.5 years.


  1. Can MicroGlass be used on any type of pool interior finish?
    • Any cement-based pool interior finish (e.g., plaster, Marcite, aggregate interiors, etc.) is a good candidate for this product. It is NOT appropriate for any plastic, vinyl, fiberglass or other non-cementitious interior finish.
    • NOTE – An acid-wash service must be performed before applying this product, and the plaster finish must then be NEUTRALIZED with baking soda (sodium bicarbonate) or soda ash (sodium carbonate) before applying MicroGlass.

  1. How old can the plaster be for this to still work?
    • The age of the plaster really doesn’t matter; What matters is the overall condition of the plaster. For example, if the plaster has worn down to the gunite, or is otherwise severely chipped, spalling or damaged, MicroGlass won’t help that.
    • Similarly, if the plaster has become overly porous (what the plaster industry often refers to as “soft”) due to chemical abuse or other problems, it may be too late to help that.
    • But if the pool plaster is experiencing typical microcracking, this product will definitely extend the life of the remaining plaster.

  1. How much more life can we get out of an existing plaster finish when we apply this product?
    • There is no specific guarantee on how much longer the plaster will last, but in our 15+ years of experience, we’ve always gained at least another five years, and often see an additional 10 years or more of usable life in the finish.
    • Note that this is based on MicroGlass hardening the existing finish by filling voids, capillaries and micro-cracks. If the plaster finish is spalling, flaking, soft, heavily stained or otherwise damaged beyond basic microcracks, then the interior finish is compromised, and MicroGlass is unlikely to extend the lifetime by a significant degree. (In these cases, you should probably re-plaster the pool, and apply MicroGlass to the new finish.)

  1. When is MicroGlass NOT a good idea for an existing pool?
    • If your plaster is noticeably damaged, soft, or spalling, or your pool finish is not a cement-based product, then MicroGlass is NOT a good choice for you.
    • If your gunite pool shell is physically damaged, such as with a structural crack or leak, you will need to repair the structural damage first. Hardened plaster will not fix a damaged shell!
    • If the finish is severely stained, it may require highly aggressive measures to restore the finished. At some point, there may not be enough plaster remaining for MicroGlass to do any good.
    • Ultimately, it depends on the condition of the existing plaster.

  1. Will MicroGlass affect the chemistry and / or maintenance of the water?
    • After MicroGlass has been applied, the pool finish will be more impervious to chemicals. As a result, you will likely see less fluctuations in pH (because we’ve minimized the reactions with the pool finish), and overall slightly less chemical usage.
    • You may want to check out the comments about MicroGlass and chemical usage from of a seasoned pool maintenance technician in this video. 


  1. Will this work on any deck surface?
    • MicroGlass is a good choice for any cement-based pool deck, provided it is not already sealed or painted.  This includes essentially all brick pavers and stone pavers, plus any sort of basic concrete or exposed aggregate.
    • MicroGlass is an outstanding choice for many soft stones such as limestone, sandstone, etc.
    • The harder the stone, the less it needs the protection of MicroGlass, which means you may not need it in the first place. If you are thinking about applying it to a hard stone, please contact us for further guidance.
    • In all cases, the concrete surface will need to be properly cleaned and prepared before applying MicroGlass.

  1. Do I have to acid wash the deck before applying?
    • The deck will need to be cleaned properly before applying the MicroGlass product, but not necessarily with an acid-wash, as that might be over-kill for most concrete and stone based deck materials. We recommend you contact the manufacturer (if pavers), or whomever installed the original deck, to confirm the exact material and appropriate cleaning method.

  1. Is this product safe around plants and grass?
    • MicroGlass is water-based, non-toxic, and environmentally safe. In fact, it’s FDA rated as “GRAS” (Generally Recognized As Safe). However, to be extra safe, it’s smart to minimize and wipe up or rinse off any overspray on non-concrete-based materials such as wood, plastic, metal, fabric or plants before it dries. 

Have other questions? Ready to give it a try?

Call us at (813) 265-3426, or use the form below.