Stop Heat

Rated 5.0 out of 5 stars
6 Reviews


Reflective Coating

In Stock

Acrylic/Urethane Blend (Ceramic)


Size :
Color :
Flat Finish, Lightly Textured


DESCRIPTION: STOP HEAT is a water-borne high-performance coating solution that blocks the absorption of solar heat gain into any external surface. Normal paints heat up from exposure to the sun. STOP HEAT is specifically designed with ceramics to keep your surfaces cool. Once applied by brush, roller or spray, STOP HEAT significantly reduces surface temperatures resulting in substantial comfort through reflectivity and emissivity. STOP HEAT is both tough and flexible, with a low permeability to resists corrosion and surface deterioration. Used on buildings, RV’s, boats, equipment and more.


  • Easy to apply – brush, roll, spray
  • Keeps surfaces cool – proprietary ceramics
  • Fast cure – 2 hr. overcoat @ 70F (21C), 40% humidity & direct sunlight
  • Low VOC – Tested 21 grams per liter
  • Non-flammable – water based
  • Easy to clean – soap and water
  • Mold & mildew resistant


  • Metal roofs & walls
  • Mobile homes and RV roofs
  • Shipping containers
  • AC unit shell, exposed metal ducting
  • Marine wheelhouse and vertical metal
  • Industrial tanks storing light hydrocarbons
  • Agricultural silos, horse trailers, chicken farms
  • Anything prone to heating up from solar radiation

Recommended Primers:

  • Non rusted galvanized roofs requires no primer
  • Rusted metal requires RUST BASE primer
    (Minimum 2 coats, each coat applied at 200 ft2 per gallon)
  • For concrete use RUST BASE as a primer to seal the surface
    (Minimum 2 coats, each coat applied at 200 ft2 per gallon)
  • Tar, Plastic, TPO, PVC, Vinyl or EPDM requires AUTO PREP

SPREAD RATE: Proper thickness can be achieved in 1-2 coats, but STOPHEAT should always be applied to a wet mil thickness of 17 mils wet / 9.3 mils dry (431 micron wet / 236 micron dry). Each gallon covers 95 sq. ft./ 8.82 sq. m.

Technical Informations

SURFACE PREPARATION: Surfaces should be clean, dry and sound. Existing surface dirt, salts, oil, tar, grease and film must be removed prior to application of STOP HEAT. STOP HEAT may be applied to other surfaces: metal, masonry, and wood following preparation procedures recommended according to manufacturer’s specification sheet. Use RUST BASE as a primer when needed on metal and concrete surfaces. Refer to RUST BASE technical data sheet for overcoat window. Modified bitumen, asphalt roofing, PVC, TPO and single-ply membranes must be primed with AUTO PREP. Please note: If any existing paint or coating is not firmly bonded, the existing paint or coating may fail and the surface will require the removal of all existing paint by power wash or abrasive blasting before the application of STOP HEAT.

APPLICATION INSTRUCTIONS: STOP HEAT can be applied by brush, roller or airless spray equipment. Mix by hand/mechanical for three minutes, and then apply evenly using the cross hatch method, up-and-down, side-to-side motion to build up your thickness. If spray equipment is used, carbide steel tips (.031) are recommended. IMPORTANT: ALL filters must be removed to prevent sifting of ceramic particles (sprayer and gun). Temperatures must always be a minimum of 5 degrees F above the dew point during application. Surface must be completely dry before applying.

CLEAN UP: Remove any uncured coating or overspray by wiping with mild soap and water or solvent. Follow solvent manufacturer’s directions. Freshly cured product is removed with sandpaper or wire brush. Gloves and safety glasses are always required during set up, application, and clean up.

SPREAD RATE: Proper thickness can be achieved in 1-2 coats, but STOPHEAT should always be applied to a wet mil thickness of 17 mils wet / 9.3 mils dry (431 micron wet / 236 micron dry). Each gallon covers 95 sq. ft./ 8.82 sq. m.

Questions and Answers

  • Does STOP HEAT come in different colors?

    Yes, but because they contain ceramics, light earth tone colors work best.

  • What color produces the best performance?

    White, because all low density ceramics are naturally white in color.

  • How does STOP HEAT block solar heat load?

    Block all three sources of radiational solar heat, by an average of 95%.

  • Can I apply STOP HEAT directly on new metal?

    Yes, as long as the surface is clean and free of oil residue.

  • Can I apply STOP HEAT on rusted metal?

    Not without Rust Base as your primer

  • Can I apply STOP HEAT on an RV roof?

    If its plastic, TPO, PVC, EPDM or rubber roof, then you will need Auto Prep as your primer before applying STOP HEAT.

  • Can I apply STOP HEAT on a flat roof?

    Yes, with an approved waterproof top coat and must have structural integrity with water drainage. No ponding water.

  • How do I calculate the spread rate for STOP HEAT?

    For corrugation you will need to add minimum 25% or more depending on the height and width of the corrugation. Contact Coatable for more details.

  • How can I apply STOP HEAT?

    Brush, Roller 3/4, 1/2 or 1/4 inch roller, or airless sprayer (1.5 gallon per minute). For a smoother appearance and more control during application, use 1/4 inch nap roller and apply in two even coats instead of 1 coat.

  • What is the maximum and minimum temperatures to apply STOP HEAT in?

    50F to 170F.

  • What if I am applying in very high humidity?

    If very high humidity above 65% AND limited sunlight or cloud cover, then must wait until direct sunlight cures the coating before you can topcoat with STOP HEAT or any other coating.

  • What if it rains after I apply STOP HEAT?

    If bubbles are seen do not puncture, wait until direct sunlight to dry down the excess moisture on its own. If heavy rain is expected or experienced within 24 hours of application, there may be some loss of coating thickness as the coating has not yet firmed up and the coating will rehydrate and lose surface film.

  • Once cured, can I walk over a roof coated with STOP HEAT?


  • Can I apply STOP HEAT on concrete?

    Yes, but you will need a base coat because concrete is porous and will absorb STOP HEAT and show shadows within the color

  • Is STOP HEAT Flammable?

    No, Stop Heat is water borne and completely no flammable and low VOC.

  • What if I get STOP HEAT on my skin?

    Clean with soap and hot water.

  • What type of personnel protection should I use when applying STOP HEAT?

    Use a nose covering, gloves and safety googles.

  • Can I mix by hand or electric drill mixer.

    If you mix by hand, use a strong stir stick for about 5 minutes, or drill mixer for about 1 minute.

  • Can I add my own tint to STOP HEAT?

    You must use a water base tint, not other type of tint will work, and only in light colors.

  • Storage Life

    3 years shelf life if its sealed. If unsealed, and over time the water within the coating has evaporated and the film is dry/thick then you may proceed to add up to one liter / quart of clean water per 5 gallon bucket. Do not add more than one liter/quart per 5 gallon bucket.

Customer Reviews

Rated 5.0 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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6 reviews
  • PD
    Peter D.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Stop Heat worked extremely well

    Living on the Gulf Coast on Corpus Christi Bay with high summer winds and extreme heat and humidity. We painted the entire side of our large house facing east with two coats of Stop Heat to lower heat penetration including sealing all fasteners and seams. We then top coated with a yellow Sherwin Williams paint to match the rest of the house. The temperature on the interior walls dropped by several degrees including sealing out humidity. Stop Heat worked extremely well and we are extremely satisfied with the results.

  • W
    William S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Living quarters trailer

    Works very well and is easy to apply before I installed it I couldn’t even put my knee down on top of my aluminum trailer with jeans on an now I could walk barefoot on it on a 100 degree day

  • CG Profile picture for Courtney logo
    Courtney G.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Will always have this on our camper roof

    This product worked wonders! After just one coat on our roof, we could walk around barefoot while finishing the other coats due to the drastic decrease in temperature on the roof. To touch the inside ceiling, it no longer feels like it scorches the palm of my hand. 100/10!! Survived Texas with this and now surviving the UV in Colorado!

  • RL
    Randy l.
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Stop heat review

    I thought to stop heat was great stuff it adhered real good coated real good and it does what it says it makes the heat not go through the roof I like it I really like it

  • WS
    Wes S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Incredible heat reduction in garage and storage building

    After painting the outside of my garage door the inside temperature of my garage dropped from 102° F to 80° F . Garage is in full sun. Prior to application of Stop Heat you could not hold your hand on exterior of garage door. It is now barely warm. It did take 2 coats to cover. 1 1/2 gallons of Stop Heat covered my double wide aluminum garage doors. Absolutely amazing product. I have since used it on exterior storage building walls with same results.

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