Maximum-Stretch® Liquid Rubber Roof Coating & Sealant

(15 customer reviews)

From: $22.49

White Elastomeric Rubberized Acrylic Roof Coating & Sealant.
Commercial Pricing Available – Call for a project quote

Features & Benefits:

  • Premium Commercial Quality Roof Coating & Sealant
  • High Performance Rubber Technology – 650% Elastic
  • Doesn’t Flake, Chip or Peel!
  • Flexible at Low Temperatures
  • 3X More Elastic Than Any Other Roof Coating
  • Adheres to Metal, Tar, Rolled Roofing & More
  • Cool White – 88% Reflective of Sun’s UV & Infrared Rays
  • Energy-Saving Benefits Reduce Cooling Costs
  • Protects Roofs from Deterioration
  • Low-Slope Roof Maintenance Increases Roof Life
  • Resists Mold & Mildew
  • Tintable!
  • Eco-Friendly!  Water Clean-Up
  • Forms Continuous Watertight Seal
  • 88% Reflective Energy Efficient
  • 12 Year Warranty on Metal Roofs

Quarts on sale! Regular price $31.99! Sale $22.49!

Available in Standard Bright White or
These Attractive Custom Colors

(Only available in 5 gallon or greater, For drums, totes and larger orders please place via Phone 888-345-0809)

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What is Ames® Maximum-Stretch® Liquid Rubber Roof Coating?

Ames® Maximum-Stretch® is a white, elastomeric, acrylic roof coating and sealant with added high-performance rubber technology. With 650% elongation, this reflective topcoat has the highest elasticity on the market today. This important feature allows it to expand and contract with the roof.

Maximum-Stretch helps to maintain and prolong the life of existing roofs and avoid expensive tear-offs. It is designed for low-slope roof maintenance on metal, built-up roofing, rolled roofing, modified bitumen, cement, EPDM, wood and more. The lasting, energy-saving benefits of bright white Maximum-Stretch keep roofs naturally cooler during hot summer months and result in lower air conditioning costs.

Maximum-Stretch is 88% reflective of the sun’s powerful UV and infrared rays and helps protect roofs from deterioration. Easily applied, it creates a uniform, seamless surface that remains flexible at low temperatures without becoming brittle, cracking or peeling. Maximum-Stretch may be used as a stand-alone waterproof roof coating and sealant, or as a topcoat in our multi-layer Roof Coating System, to maintain and revitalize very aged and deteriorated roofs. Widely recognized as the premium elastomeric roof coating on the market today, Maximum-Stretch is eco-friendly, cleans up easily with water and comes with a 12-year warranty on metal roofs.

Maximum-Stretch comes ready-mixed and is easy to apply, with little or no stirring required. Apply Maximum-Stretch with a roller, squeegee, broom or commercial airless sprayer. For maximum waterproofing, apply Maximum-Stretch in a uniform and seamless fashion with adequate dry mil thickness. Premium, commercial-quality Maximum-Stretch resists mold and mildew, is non-toxic, environmentally friendly and low-odor, and cleans up with water before drying.

Where to Use:

Metal Roofs including:
• Residential & Commercial
• Tin
• Aluminum
• Rusty Metal
• Corrugated Metal
• Butler Buildings
• Hangers
• Factories

Flat Roofs including:
• Tar Roofs
• Built up Roofs
• Fiberglass
• Concrete
• Modified Bitumen
• Aluminum Coated Roofs
• Rolled Roofing
• Plywood
• EPDM/Rubber
• PVC and Vinyl Roofs
• Vents
• Skylights
• Flashing

Read all instructions prior to starting. Application guidelines for a Maximum-Stretch Roof System vary depending on roof type and condition. Our Waterproofing Experts can be reached at 1-888-345-0809. They are available, at no obligation, to assist in determining the correct Maximum-Stretch Roof System for your specific roof. We strongly recommend that you run a preliminary test patch in an inconspicuous area to ensure that proper adhesion and drying occurs and to verify that the product works to your satisfaction before proceeding. All specifications are suggestions only.

Step 1. Prepare the surface. Clean the roof with water. Do not use soap. Allow the surface to dry. Replace or reset fasteners that may have backed out and make other needed roof repairs. Use an Ames Seam Reinforcement product suitable for your roof type – either Ames Peel & Stick Seam Tape or Ames Reinforcement Fabric – and apply over seams, around roof vents, protrusions, joints and cracks, along flashing on parapet walls, and to the cap, peak or ridge line of the roof.

Step 2. Prime the surface, if needed, with either Ames Blue Max® or Elasto-Barrier®. If needed for your roof type, Ames Contouring Polyester Roof Fabric in 42” wide rolls can be embedded in either Ames Elasto-Barrier or Ames Blue Max for additional coating reinforcement.

Step 3. Apply a topcoat of Maximum-Stretch using a sprayer or by pouring and spreading the product in sections. Apply at least two coats of Maximum-Stretch at the rate of 1 gallon per 100 sq. ft. per coat. Take care to maintain a uniform thickness while applying Maximum-Stretch. If using a squeegee, push broom or roller, spread product in 1- or 2-gallon increments, working in manageable sections to ensure uniform thickness is achieved while wet. For sprayer applications, a roller may be necessary to help ensure uniformity and infill rough surfaces during application. Allow proper drying time between coats.

Airless Spray Equipment
Use airless equipment with a flow rate of 1.5 to 2 GPM @ 2,500 to 3,000 PSI, using a reverse-clean tip sized 629 (12in fan, 0.29 orifice size) to 633 (12in fan, 0.33 orifice size). Recommended hose size is 3/8in reduced to 1/4in before connection to the gun. Use a rock screen on the pick-up tube and a 60-mesh filter on the output side of the pump. If the spray gun has a filter, remove it temporarily. Airless equipment should be thoroughly cleaned after each use, without delay. For professional high production application techniques, consult Ames Tech Services for larger equipment recommendations.

Maximum-Stretch is best applied to warm, dry surfaces at temperatures between 50°F to 90°F (10°C to 30°C) and less than 50% humidity. Do not apply to wet surfaces or when rain is forecast within 24 hours. Do not apply late in the day as evening dew may inhibit drying.

Dry times are dependent upon the thickness of application, humidity and weather. Maximum-Stretch begins to dry in approximately 2–4 hours, but a full 24 hours between coats is recommended to allow for variations in weather and thickness. Make sure that each coat is completely dry before proceeding with additional coats. The coating should be cured after 24 hours. Some conditions, such as low temperature, high humidity, and evening and morning dew, can increase curing times.

Always test the roof after initial cure to verify dryness before applying additional coats or exposing the roof to foot traffic. Once the membrane is cured, take care to inspect and repair any obvious deficiencies and allow any repairs to cure.

Cleanup, Storage and Disposal
Clean-up tools and small spills with water. Airless equipment should be cleaned promptly after use. Clean paint sprayer pump, hose, gun, filters and pick-up tube thoroughly with warm, soapy water repeatedly before storage. Store unused product in its original can, tightly sealed and protected from freezing. Dispose of the product in accordance with local, state and federal laws.

Estimated Coverage
Standard product coverage on a smooth surface is 1 gallon per 100 sq. ft. per coat. A minimum of two coats is recommended. Uneven or coarse surfaces may require additional product and drying time.

Take care to protect the curing roof from rain and inclement weather.

Keep out of reach of children. If swallowed, seek medical attention immediately, do not induce vomiting. Call 911 for a doctor or poison control center. In case of contact with eyes, flush thoroughly with water. This product contains a unique combination of water-based polymers. Repeated or prolonged contact with skin may produce irritation or sensitivity. Use gloves to protect sensitive skin. WARNING: If you scrape, sand or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID LEAD DUST. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or logon to www.epa.gov/lead.

For Technical and Safety Data Sheets Please Contact Us

Contact us

12 Year No Peel Warranty: Maximum-Stretch (PDF)

Color Guides
New Valspar Colorant Formulas for Maximum-Stretch® PDF

Call 503-974-3353 To Place Your Order!

15 reviews for Maximum-Stretch® Liquid Rubber Roof Coating & Sealant

  1. Rocky R.

    I applied ames roof coatings to 3 schools in WV. The roofs were already leaking and had been for a few years. The coatings cost about 7 percent the price of 3 new roofs. It was money well spent. The roofs are not leaking and have withstood temperatures from minus 5 to 95 F. We applied the product just like the direction said and we used a sprayer.

  2. Jeff K.

    I can’t say enough good things about Ames Research products like Maximum Stretch, especially for RV’s. I recently coated my mother’s entire 5th wheel trailer roof with 2 coats of white Maximum Stretch after rolling on a layer of Ames Super Primer, on advice from Ames staff. It took only a couple of hours and I saved hundreds in cost if I had a contractor do it. Plus, with all Ames products clean up was really easy using water. I also sealed the joints and other attach points a couple of years ago on my own motorhome roof with Max Stretch and Super Primer and have never had a leak in rainy western Oregon. Plus, I used their Blue Max product, along with their seam tape to seal up leaking RV holding tanks in two motorhomes I have owned with no leaks either with the interior fresh water or outside the coach black and gray water tanks. This stuff works

  3. Corkey G.

    I own a commercial building in Corvallis, OR that has a flat roof with a slight slope, but has areas along the parapit walls where the rain water does not drain. Based on the slope of the roof there are area that always puddles and does not drain all the rain water off of the roof. I was told by a friend about a product called Maximum Stretch that had a elastomeric rubber coating application and could be rolled on flat roofs. The process called for seam tape to be used over all roof seam joints and to use a two coat process. I found the process to apply the product to be extremely easy and effective. Now here is the good news. When this product came out, I was told it would last for 15 years with some maintenance at times, this product lasted 22 years without any additional maintenance. When this product is applied right from the beginning you will save a lot of money over future years to come. This product was a great business decision.

  4. Min B.

    Excellent product Coated my pumphouse and it’s been leak free ever since. Going on 8 years now.

  5. Gary S

    Hi, I just wanted to let you know that Ames metal roof sealant products you recommended are working great. We have a 4 season room on the back of our home that is about 20 years old. Over the years, the I-beam, panel, skylight roof had developed a few leaks and I tried numerous caulks, etc from local stores, but the leaks continued. After discovering Ames products online, I decided to try them. The recommendation of going with the 3-stage process, seam tape, primer and final coat is working very well, we followed the recommended application process, and now, no leaks. Thank you and the Ames company for your great products.

  6. Lynn J. (verified owner)

    Great Stuff
    I have had problems with my upper plywood deck for years. I was constantly recoating it with Restore Deck, which turned out to be a very poor choice. I found and used the Ames Maximum Stretch over the Elasto Barrier and it held up very well, no leaking. I only wish I had found this product before doing all that unnecessary work. Thank you, Ames.

  7. Phil G. (verified owner)

    Good Stuff
    Time to order some more and re-do the roof. I Put this on a concrete storm pit roof 10 years ago. I had tar that would need to be patched 3 or 4 time a year to stop leaks. I ordered the primer and the Elastor barrier, then topped with the Maximum streach and had no leaks for 10 years. Have a leak now, so I am going to order more and just recoat. I could patch the one place it is leaking, but this was recommended to be recoated in 5 years and it lasted 10 so I am going to recoat. I think it has done very well, to be on a flat roof in the southern sun.

  8. Phil L.

    I ordered both the Super Primer and Super Stretch about 8 years ago. I got a 5-gallon pail of the Super Primer, and two 5 gallon pails of the Super Stretch. I have a flat roof for our converted playroom with the rubber sheeting that was installed 7 years earlier and I wanted put a coating on it instead of replacing it. So back then i put on two coats of the Primer, and one pail turned out to be enough for the Super stretch. I still had two thirds of the Primer left over. I put the primer in the basement, along with the unopened Super Stretch.

    About 18 months ago, I noticed the coatings started to alligator in some places, especially near my downspout. Still no leaks. Based upon what was written on the cans in terms of longevity, it lasted a lot longer than they say it will.

    So I finally got around to digging out the pails from my basement and applied both again this month. The Primer was a little tackier after two coats this time, but that was ok since I was putting a top coat on. I waited a week, and then applied the pail of Super Stretch. It had never been opened in the 8 years since I bought it, and it was fresh and had almost no separation of ingredients. Very little mixing was required. Last time, I had used a driveway coater squeegee to apply both products. This time I used a normal 9 inch paint roller with the three eighths inch nap, with an extension pole. Very easy to apply both products.

    I probably put the Super Stretch on a little thick, since I used the whole 5 gallons on about 270 square feet, including cutting in the area around the drain and along the main brick flashing of the house. But i figured the first application lasted more than years with no issues, so I’d do the same.

    Replacing the roof with a new rubberized coating will probably cost me $1,500 or more now, so spending about $250 to gain 5+ years of life is a bargain. I will be back for more in 5-7 years. Great Stuff.

  9. Clyde C

    My shop is a 30X40 with a 4 12 pitch metal roof, build in 1983. Painted poorly 10 years ago. Although I did not have any leaks yet it did have a lot more rust spots than I wanted. I brought the primer to treat the rust spots and let it dry, then applied the Maximum Stretch. It goes on smooth and fast. My trouble was I put it on too thin and had way too much left over. So a phone call later soon had me putting a second and thicker coat on. I was using a 6 inch HD Brush. I am VERY satisfied with the ending results. Looks great. I also painted our 5th wheel camper as well.

  10. Michael A

    My roof has leaked since it was built. They put a 1 story low pitch roof addition on a 2 story peaked roof house. Most of the rain from the peaked roof landed on one spot on the low pitched roof. I guess it was too much, the rain could not get off the roof fast enough. I tried everything. I cant tell you the joy of looking up at the bottom of my roof from the inside, because all the drywall has long since collapsed, and not seeing even one leak. Since most of the roof was rotted. I replaced all of the deck with new plywood andi used the elasto barrier primer, seam tape and fabric. I live in CT, where we get all 4 seasons. Snow sits on the low pitched roof for most of the winter. Freezing and thawing. That is when I would expect this product to fail, if it was going to fail. Had it on for a year. No leaks. If you have a problem roof, this is the stuff you want. Added benefit, if looking at how much detail of your house and yard that google maps can see, bothers you, it dries to a bright white. When the sun hits it, I expect google to get snow blindness and not see anything.

  11. Bob S

    Super Product. We have a metal roof on our place in NM and would get driven rain up under an overhang and leak inside the building. Bought a 5 gallon bucket and applied two coats to the seam where the two roofs overhang each other, and now no leaks. Your product worked as advertised and the bonus is it is made in the USA. Keep up the good work folks.

  12. Spencer H

    I used this product on my 20 year old asphalt shingle roof. We had a 105 degree day and I used an infrared thermometer to compare the part of the roof that had been coated against the part that wasn’t. The non-coated side was 133 degrees. The coated side was 108 degrees. The difference would probably be more dramatic with a darker shingle. Also I capture the water for reuse in my vegetable garden so it was important that this paint was non toxic. It also provides a good grip when walking around on the roof to clean out the gutters. BOTTOM LINE Yes, I would recommend this to a friend.

  13. David P

    We have a 95 year old Spanish style house that was impossible to keep cool during the summer. Our electric bill for last August alone was $600 and we still couldn’t get the living room temperature below 90 F day or night.

    This year we were almost ready to sign up for a 25,000 dollar fix when I saw your site on the internet. I ordered 15 gallons of Maximum Stretch, enough for one coat on our roof. With my infrared thermometer, I took the temperature of the living room ceiling before I started. It registered 87 F. By that afternoon, I finished the very easy pour it out and roll it on application and the temperature dropped to 75 F.

    Not only did we save the 25,000 dollars we are saving 100 dollars per week in energy costs and will pay for the products in less than 6 weeks.

  14. Christopher W

    I bought some Elasto-Barrier, Maximum Stretch and seam tape to use on my flat roofed garage with rolled roofing. In the eight years I have owned my home I have always had trouble with leaks. I have a 1000 sq. ft. garage so it’s not a small structure. Your product went on with such ease. In the last two weeks we have had a couple of downpours or rain and two days of constant rain. NO LEAKS. I am so amazed. It is so nice to not have to worry about it anymore. If anyone has troubles with leaks I will pass on your name to them. I am going to let my roof go until next spring to see how tough winter is on it. Then next spring I will get some more Maximum-Stretch and give the areas where I have trouble another coat.

  15. Chris S

    I first saw the product and what it could do at a demonstration. I later tried the product out myself and was very amazed at how pliable and strong the product really was. After applying I have had not more leaks.

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