Elastomeric Paint – Possibly The Best Exterior Paint

Possibly the best exterior finish is elastomeric paint. This coating is so durable it can out perform even the best 100% exterior acrylic paint by 2 to 1. Elastomeric paint forms a durable, tough film that provides a waterproof coating to almost any structure. This paint is resistant to sunlight, heat, cold and wind driven rain.

Plus, it can be applied to all masonry surfaces, particularly stucco and concrete block. But is equally suitable for wood and T-111 siding, check your particular manufacture for compatibility with wood.

You can eliminate cracking in masonry and many types of wood with this very thick coating. Elastomeric coatings have tremendous elongation characteristics, it will bridge and repair non-structural hairline cracks.

This is especially useful with stucco that has developed numerous cracks. But wood surfaces, such as T-111 siding, can gain great benefits from its use. T-111 siding develops a large number of cracks over time. These imperfections must be completely filled with primer and paint or water will penetrate beneath the finish and cause peeling.

Many homeowners, and painters alike, try multiple coats of paint to fill these cracks. This doesn’t last very long. With peeling starting in just 2-3 years with the paint degenerating quickly there after.

Elastomeric Paint Doesn’t Need Multiple Coats

With 2 coats of elastomeric paint over an excellent primer, the cracks will be filled and water will not be able to penetrate. When properly applied a 100% acrylic paint can last 10 years, but an elastomeric coating can last much longer.

When compared to standard house paints the overall cost of this coating is about 50% more.

This is due to increase costs per gallon plus a small spread rate, 50-75 square feet per gallon is typical. If you are paying for labor as well, the cost of application of this coating will be also be higher. A do-it-yourself home owner can apply this product, if you have previous painting experience.

I have applied this coating to T-111 and masonite siding, plus stucco and concrete block, with excellent results. Providing a beautiful finish that will last for many years.

Brush and roller or airless paint sprayer can be used to apply this type of coating. Because of the heavy consistency of this product, a large powerful sprayer is needed. 1 gal per minute output or more is recommended with a tip size of 521 or larger. Choose the spray tip according to the pump manufactures recommendations. Thin this paint with water, if needed, and clean up with a mild soap and water.




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43 Comments

  1. Dave
    Posted February 11, 2015 at 7:42 pm | Permalink

    Elastomeric is absolutely the WORST exterior paint, here is why: when it fails, you are screwed. You cannot coat over it because with age it develops pores and the new paint will be pushed off via water bubbles. It cannot be too thin or too thick, or it will fail. Your only choice is to remove it completely, but it is so tough it resists chemical strippers, it is so flexible it resists pressure washing and sandblasting. The only way to remove it is with scrappers and heat… this is absolutely the most expensive way to remove paint. I am looking at about $15k to prep for a $6k paintjob. So many places touting the virtues of elastomeric paint, yet nobody knows what to do WHEN it fails.

    • Rosalia Gonzalez
      Posted July 23, 2017 at 9:52 pm | Permalink

      Hi Dave, I have considered painting the South wall, which takes a beating with wind driven rain and afternoon sun in the Sacramento area. I have considered exactly your scenario. So, how do you remove elastomeric paint over stucco when it fails? What other alternatives are there to make a stucco wall watertight?

      • Kim Walrath
        Posted September 2, 2017 at 9:16 am | Permalink

        I would put on a new finish coat, then use a concrete sealer or the like. That will need repeating every couple years. Why do you want it to be watertight is my first question. Houses need to breathe a bit. Anyway if you didn’t need watertight, I would just plan on putting on a new finish coat. Add a bit of Acryl60, an acrylic type glue specific for cement products. This will make the material a bit harder to spread (I am a plasterer) but just bite of smaller areas. Acryl60 does really make a very water resistant finish and you can paint in ten years. Good luck

  2. Posted February 12, 2015 at 1:37 am | Permalink

    Many brands of elestomeric coatings can be painted over with regular house paint, good quality house paint. We use Sherwin Williams elastomerics without any problems but stucco failures, excessive liming, can cause the coating to fail.

    Yes it is a tough coating but has its limits.

  3. Kozzy420247
    Posted October 2, 2015 at 6:19 am | Permalink

    I’m building my room and am using Greenboard Drywall ( water and mild / mildew resistant ) I want to know if Elastrometric paint can be used on drywall ?? Trying to make as easy as possible to clean and to prevent any moisture from getting out of the room.. Thanks in advance for the help..

    • Posted October 2, 2015 at 1:56 pm | Permalink

      I suppose Elastomeric paint could be used this way but using a specialized product would be better. Drylock primer is designed to block out water and moisture transfer through different materials. To water proof an interior room use an epoxy.

      • Charles S
        Posted April 24, 2017 at 3:12 am | Permalink

        When you say Drylok primer, do you mean Drylok Masonry Waterproofer ,which is a paint but isused as the primer for elastomeric paint? I am considering to first apply Drylok as primer on a painted stucco wall before applying elastomeric paint, to stop water intrusion. Is this a recommended practice? Thanks a lot for the clarification.

        • Posted April 24, 2017 at 12:59 pm | Permalink

          That will work fine. The idea is to add a tough water resistant layer under the elastomeric paint. I never used Drylok as a finish paint but have used it under other paints to stop water intrusion. Combined with the elastomeric coating this should be a tough as it can get.

          • Charles S
            Posted April 25, 2017 at 5:07 am | Permalink

            Thank you so much for the comment!!!

    • Teri
      Posted October 26, 2015 at 4:39 am | Permalink

      Building a room? What kind of room? I’m assuming a bathroom since you are using green board? I would not use elastomeric. It’s expensive, very thick (have you ever tried making a nice cut in line with pudding? lol) and basically over kill. Alkyd paint would be best if you are expecting a lot of moisture that cant leave the room (like a bathroom with no exhaust or windows. It’s a lot harder to clean up if you miss any drops and can smell pretty strong. But finally, if the room is in great shape, has typical ventilation, a regular latex paint with a sheen would be perfectly fine. The more the sheen, the better the resistance and easier it wipes off.

  4. Tom Vondra
    Posted October 12, 2015 at 3:47 pm | Permalink

    Elastomeric coating is commonly applied to split faced block used on store buildings, and is often recoated with house paint. Never a problem. It is much more durable than house paint. I don’t know why it is not sold over the counter for repaint projects, it’s not that expensive.

  5. Kevin F
    Posted April 14, 2017 at 8:06 pm | Permalink

    Whats the titanium dioxide levels of this elastomeric paint? A couple of bids I got emphasize that as the better ingredient to look for. Personally, I don’t know squat about paints. Just do not want to get ripped off. Or get into tripple paint removal costs or something in 5-10 down the road.Since I bought this abode, I have painted it 3 times, about every 5 years, with home depot beher paint. Crud on the comparison scale according to some paint contractors.

    • Posted April 15, 2017 at 1:11 pm | Permalink

      You will need to ask the manufacture as to titanium levels but it is no different that most quality paints. Titanium dioxide makes paints white plus improve coverage and uv stability. It’s in all paints.

      An elastomeric coating is a very good option for your home. Research the brands offered in the bids. Sherwin Williams has some good elastomeric paints.

  6. Karen
    Posted May 4, 2017 at 12:51 pm | Permalink

    I am going to have my house painted using elastomeric paint. Is it important to use the elastomeric patching compound on cracks? Is it ok to do one coat of elastomeric and one coat of regular paint?

    • Posted May 5, 2017 at 1:03 am | Permalink

      The patching compound must be used on large non-structural cracks, typically anything over an 1/16th wide. Tight cracks can be painted over.

      One coat of elastomeric is fine if it is thick enough, follow the manufactures specs for mil-thickness. Typically it is easier to just apply 2 coats, the first back-rolled to fill surface cracks and pores, then a second to get the proper thickness of the dry film.

  7. Claudia Rosencrantz
    Posted May 5, 2017 at 3:41 pm | Permalink

    We live right on the sea front so the house takes a battering with salt and wind and all elements. Is this the best paint for it?

    • Posted May 9, 2017 at 1:10 pm | Permalink

      An elestomeric coating would be a good choice but it has limitations and would require reapplication sooner in your environment. All paints and coatings will degrade faster when exposed to salt spray. Consult with your local paint store for suitability and possible options.

  8. David B
    Posted May 19, 2017 at 10:24 pm | Permalink

    I live in a condo right on the beach. 12 years ago we painted the exterior of our condo with a silicone based elastomeric paint. It has held up well. However, the literature on the paint says 12 yrs is about the time to repaint. I was a chemist with a career in rubber and plastics but have been retired for 20 years. Back in my day… the only thing that would stick to silicone was silicone. Other polymers would not adhere. Therefore, I assume that we should go back on top of the original silicone elastomer paint with more silicone elastomer paint. !!! Do you disagree? Wouldn’t it be a mistake to use an acrylic based paint on top of the silicone based paint?

    • Posted May 19, 2017 at 11:53 pm | Permalink

      Completely agree, go with the manufactures recommendations. Applying an acrylic elastomeric would most likely peel, a real mess.

  9. Lisa
    Posted May 28, 2017 at 12:32 am | Permalink

    We bought a large house in the mountains (direct sun and snow exposure) with wood siding and the paint is chipping all over. We were considering replacing the wood with vinyl siding but are also looking for a cheaper durable alternative. Do you think this product would be an appropriate option?

    • Posted May 29, 2017 at 3:57 am | Permalink

      An elestomeric coating is a good alternative to regular paint and other more expensive coverings in many circumstances. The prep, removal of loose chipped paint, is still very important and if not done correctly will result in premature failure of the coating. If you go down this path make sure the preparation is done correctly and throughly. Contact your local paint store for more details about the prep and application of their elastomeric coating.

      • Lisa
        Posted May 30, 2017 at 6:04 pm | Permalink

        Thanks so much! Appreciate the feedback. 🙂

  10. Ken
    Posted June 1, 2017 at 1:13 pm | Permalink

    I have a section of stucco wall stained by polyurethane insulation. The material was removed but the residue turned brown from uv exposure. How can this be covered?

    • Posted June 3, 2017 at 12:50 pm | Permalink

      The stucco itself will need painting in order to cover this up. Prime with an acrylic stain blocking primer then paint. If the stain wants to come through the primer then you will need to use an oil base primer like Zinsser Cover Stain.

  11. Claude
    Posted June 2, 2017 at 6:01 pm | Permalink

    I am considering an elastomeric coating over my stucco house. It is quite rough with a rock and glass dash. My concern is adhesion to the glass. Any thoughts on its suitability?

    • Posted June 3, 2017 at 12:47 pm | Permalink

      A good quality elastomeric will stick just fine. This coating is very sticky and grips quite well. Double check the recommendations with your local paint store.

  12. Posted June 5, 2017 at 11:04 pm | Permalink

    I live in Colorado. I have only just heard about elastomeric paint. I am wondering if it would be good to use on the wooden window trim on an all brick home. My reason for looking into a GOOD paint is that many of my painted surfaces face south and take almost constant sunlight. My paint color has always been a barnish red to match my brick, which seems to take the heat even more.

    • Posted June 8, 2017 at 1:49 pm | Permalink

      Elastomeric paint is a possibility but a good house paint might hold up better as red and on wood. After prepping and priming the elastomeric can be used as a first coat to fill in small cracks and provide a strong membrane for the finish paint. A really good paint to use is Sherwin Williams Duration or Resilience. If I remember correctly the Sherwin Williams Resilience has a red base, this will not only give better coverage but also better UV resistance.

  13. Sue
    Posted June 19, 2017 at 5:26 pm | Permalink

    Does this paint offer any insulating properties that qualify for Title 24 grants?

    • Posted June 20, 2017 at 1:47 am | Permalink

      Standard elastomeric coating do not offer any insulating properties but this will be different fort each manufacture. Consult with your local paint stores for more information.

  14. chris McMillan
    Posted August 3, 2017 at 8:47 am | Permalink

    Hi, I’m building a Dome Home in Australia constructed of 6×4 timber made into triangular frames, covered in H3 structural ply 17mm thick, ie oil treated. Would drywall as a primer then 2 coats of Elastomeric paint be suitable for this job. Thanks

    • Posted August 4, 2017 at 10:13 pm | Permalink

      You would need to choose a good wood primer before the application of any coating. An elastomeric coating will have some challenges with this type of construction. All joints would need special treatment to accommodate the movement, special sealants/caulkings. Check with your local supplier/manufacture before committing to using a standard elastomeric coating.

      An option is to use an EFIS system with a trowel applied color coat. EFIS is a synthetic stucco system that is applied over foam insulation. The foal would be attached to the dome with glue and screws, a base coat is applied with a fiberglass mesh then the troweled elastomeric color coat is applied.

  15. Mike Goheen
    Posted August 10, 2017 at 2:31 pm | Permalink

    We are having our old painted repurposed brick chimneys replaced as moisture can’t escape and it’s causing various problems. While we went with “white” brick to match our white house it still looks very red next to the painted house. Now we’re considering the elastomeric paint instead of waterproofing the brick. We would most likely paint our entire brick house at the same time with this paint. I see pros and cons on your forum. Do you think this is our best course of option? Already almost 20K into this project and we obviously need it done correctly. Thank you.

    • Posted August 11, 2017 at 1:13 am | Permalink

      An elastomeric coating is specifically designed for brick as well as other masonry surfaces. It is a better choice than regular house paint. With proper prep, cleaning and application of a masonry primer, a high quality elastomeric coating should be problem free and last for many years. Your only alternative is stucco, not cheap.

  16. Neil Dorfman
    Posted August 15, 2017 at 10:40 pm | Permalink

    I live at the Beach. house is stucco and needs to be repainted. Various painters have made proposals. Do you have a preference to the following choices:
    1. PPG Perma crete Pitt-flex, two coats
    2. Loxon XP, two coats
    3. Loxon conditioner primer, 1 coat and then Loxon XP two coats
    4. SW Sherlastic, two coats

    • Posted August 15, 2017 at 10:51 pm | Permalink

      These are all good choices but I would go with #3. Primer then 2 coats of Loxon XP will take a beating and still have good permeability. Plus it can easily be painted over in the future.

  17. Ian Wellman
    Posted August 28, 2017 at 4:23 pm | Permalink

    I have a stucco house that needs repainting. The previous paint was a CHIC Liquid Vinyl coating. I have proposals for the following paints;
    Cloverdale Towerthon Elastomeric – two coats
    Dulux Diamond Exterior – 2 coats
    Dulux Perma-Crete 100% Acrylic High Build – 2 coats

    Which of these coatings do you think is the best given the prior coating. I want a coating that will last 10 years.

    • Posted August 29, 2017 at 1:43 pm | Permalink

      I would go with the Dulux Diamond, 2 coats. This assumes the previous paint isn’t peeling really bad and the stucco is in good overall shape.

      It isn’t a good idea to apply true elastomeric coatings over previous paints, only over themselves. The same goes for the Perma-Crete, although the Perma-Crete patching compounds can be used for stucco repairs if needed.

      • Ian Wellman
        Posted August 29, 2017 at 3:02 pm | Permalink

        Thanks for your advice

  18. Natalia
    Posted September 2, 2017 at 10:09 am | Permalink

    I live in the desert with sunny dry and windy weather conditions. My house has stucco previously painted with elastomeric and now needs to be repainted. Various painters have made proposals. Should I use acrylic or elastomeric paint on top of another elastomeric?

    • Posted September 3, 2017 at 1:59 pm | Permalink

      You can go either way. If the existing elestomeric coating is in good shape, just faded, then regular good paint is fine. In most cases priming isn’t needed, just clean and paint.

  19. Jim
    Posted September 11, 2017 at 9:46 pm | Permalink

    Hey All,

    Fellow HOA Board Member patched heavily textured stucco with standard (non-textured) patch material and then applied one coat of elastomeric paint. Repair areas really show. Can we put a textured patching material on top of the elastomeric first coat and then a second coat? Does it need to be an elastomeric patching compound? If not, any ideas? Also, if permitted please recommend specific brand of patching compound!

    • Posted September 12, 2017 at 12:57 am | Permalink

      You will need to use an acrylic stucco color coat or patching compound. The local Sherwin Williams sells tintable Total Wall color coats in a couple different textures. This might be a good alternative for you. Check you local paint stores for available supplies, if not there then call around for a stucco supplier.

      Good brands I have used are Total Wall, STO and La Habra. They are all have good products that can be used for this purpose.

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