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BLUE MAX® Original Blue

22 reviews Write a Review

Blue Max® Liquid Rubber Waterproofer is a water-based, strong and highly adhesive elastomeric coating & sealant with 1200% elongation that moves with the surface to resist cracking & peeling. Ideal for waterproofing above & below grade foundations, basements, roofs, floors & more. Commonly used on masonry, cement backer board, ICF, wood, metal & EPDM. Blue Max® is easy to apply with brush, roller or sprayer. When Blue Max is used on any roofing substrate, it is important to topcoat with either our Maximum Stretch or Ames Premium Roof Armor to protect it from the sun's UV rays.


Dries to recoat in as little as 4 hours

Air Barrier Association of America Certified

Non-toxic, eco-friendly, low VOC & made in the USA

Call Ames at 888-345-0809 for bulk pricing & availability


BLUE MAX® Original Blue Liquid Rubber Waterproofer is a water-based, strong and highly adhesive elastomeric coating & sealant with 1200% elongation that moves with the surface to resist cracking & peeling. BLUE MAX® Original Blue is ideal for waterproofing above & below grade foundations, basements, roofs, floors & more.

22 Reviews

  • 5
    This stuff sticks to anything!

    Posted by Andre on 10th Apr 2024

    This might aswell be a construction adhesive! Its bonds tightly to almost anything!

  • 5
    I use this on everything!

    Posted by Austin Bivens on 10th May 2023

    I coated my basement floor and walls with this product and im getting ready to use it for my bathroom floor aswell. Its incredible stuff. VERY ADHESIVE.

  • 5
    Blue Max and Seam Tape

    Posted by Mark Duvall on 3rd Apr 2023

    Use on glaze tile in the basement. Always had "dampness". -scraped the paint from the glazed tile blocks -re-point the mortar joints -cover the seams with blue max then seam tape -apply blue max in several coats After drying, walls are ready for primer and paint. 3 years without any leaks or dampness!!

  • 5
    Below Grade Waterproofing

    Posted by Hardtop Construction on 24th Mar 2023

    I found out this product is sprayable from a gentleman at the International Builders Show last year and I’ve been using it ever since. Highly recommend.

  • 5
    blue max

    Posted by joe cutter on 12th Nov 2021

    I cannot afford a new roof right now, economic being what they are. So I coated the roof about 5 times w/Blue Max. We are getting a decent rainy day here where I live in South Jersey, and so far Blue Max is holding just fine, Stopped the leak. My biggest problem was keeping the falling leaves away from the coatings until they set up. I like your product, and your attention to customer service. Thanks

  • 5
    This actually works!

    Posted by adrienne on 3rd Dec 2020

    I have 6 rental properties. I've tried other products to stop water--this works! Amazing stuff! And easy cleanup--It has stopped leaky basements in 4 basements and I've used as a base to fill cracks on 3 decks--only product I'll use again.

  • 5
    Highly recommended!

    Posted by Peter S on 3rd Jun 2020

    This really works! I had a house built on the side of a hill and the stacked-stone basement walls leaked like a sieve. It took 2 5-gallon buckets but it never leaked again after putting this on. Highly recommended!!!!!

  • 5
    Excellent product tech

    Posted by Carol P. on 6th Oct 2019

    This review regards the phone call I had with Gene, the product tech, who was absolutely excellent in dealing with me regarding my leaky basement walls. He explained everything, step by step, from how to clean the basement walls, seal the cracks, what type of brush or roller to use, how to use the tape, calculated the square footage for product coverage, to how to apply Blue Max. He even had me email pictures of my basement walls so as to determine with what I was dealing. He gave me the confidence to tackle the job. Once I am finished, I will send a review regarding how Blue Max actually worked. I am anxious to get started.

  • 5
    Great customer service

    Posted by Jeffery C on 19th May 2019

    I love their products. I called with a few questions before hand, and they answered them fast. Basement is still dry two years later.

  • 5
    Thank you

    Posted by Brian S. on 19th May 2019

    Terrific Product. Great sales staff.

  • 5
    Helpful customer service

    Posted by Rex H. on 16th May 2019

    I am very pleased with the great customer service I received from Tracy on how to prep and apply Blue Max. Tracey took the time to understand my job and is completely thorough in explaining in detail how to do the job right. Customer Service is very important to me and Tracey unquestionably knows Ames products and application. This is the way a company should be run. Knowledgeable and willing to go the extra mile for my needs.

  • 5
    5 Stars

    Posted by Dave G. on 10th Feb 2019

    Very happy here in Australia. Liquid rubber is the only thing under the harsh Australian sun that benefited From torrential rain and salt living by the sea. A big a1 and 5 stars.

  • 5
    Always positive feedback

    Posted by Donna D on 8th Jan 2019

    As an Ace Hardware retailer, I have often recommended Blue Max to my customers over the last 11 years to stop basement leaks. I have had nothing but positive feedback and many happy customers who come back to my store for other Ames products to solve all of their waterproofing needs. Five stars. Excellent product.

  • 5
    Couldn't have been more pleased

    Posted by Chris F. on 7th Jan 2019

    I used Blue Max on a leaking teak deck on a sailboat. The Ames Research guys were hesitant to endorse that use. Teak is hard for anything to stick to. There were a few issues, but overall, it was a huge success. I had tried reseaming with polysulfide rubber, even tried varnishing it with Cetol, but nothing worked. I had to wait for the driest time of year. I did had some minor blistering in a few spots on hot days, as vapor tried to escape. I never got blisters on areas coated with Cetol, so that may serve as a good primer for Blue Max. At the end of it, I had coated everything that wasn't gelcoat, and it was beautiful. The non-skid parts were the best I've experienced. No slip at all. In the few places with blisters, I cut it away and recoated. The job was still fine after 2 years. I sold the boat, but couldn't have been more pleased with how it turned out.

  • 5
    Not a single leak

    Posted by Hondo H. on 31st Aug 2018

    PROBLEM SOLVED. Year after year we had water seeping into the family room of our split level house. Many products were tried, and many hours were wasted, until I discovered Blue Max. In the 9 months since applying Blue Max, we have been inundated with snow and torrential rains, but not a drop of precipitation got through. Thank you so much.

  • 5
    Protects lumber

    Posted by Robert H. on 14th Feb 2018

    I used it to coat treated lumber for raised garden beds, on the insides of the beds and the posts that go into the ground. It paints on wonderfully, just used a 5in brush. Washes off the brush when done for the day. Hardens into a rubbery coating that should protect our wood for an additional ten years at least.

  • 5
    No problems since I applied it

    Posted by Chris D. on 14th Jan 2017

    Blue Max worked great in my basement Purchased Blue Max a year ago and sprayed it on my basement walls. No problems since. Great product.

  • 5
    Keeps our basement dry

    Posted by Sara C. on 23rd Oct 2016

    I have applied two coats in the basement laundry area. We have had rain since and basement is dry. Also used the seam tape along the bottom of the wall and floor. Applied the coats very thickly and still have half a container. Can't wait to do the rest of the walls in the basement.

  • 5
    Easy spray application

    Posted by Jimmy M. on 8th Aug 2016

    Worked great on new home construction. I rolled on the first coating and sprayed on the second coating using a rented Graco 5900 with a 0531 tip. Spraying it was SUPER easy. I was concerned about that and no review I could find seemed to indicate how well spraying it would go. It also cleaned up easily enough so that I got my deposit for the sprayer back from the paint shop. I'm not done with the house yet so I can't speak to the longevity of it, but all other reviews I've seen indicate that it'll work out just fine. Works Just Like it Says

  • 5
    Very impressed

    Posted by Alex A on 24th Jul 2016

    Works Just Like it Says Our basement wall leaked all the time, we even got mold and had floods. Got rid of the mold applied this product and it is great, we have gone 2 years with no leaks. We are redoing another room with a partial basement wall and decided to use this as a precaution. Very impressed with Blue Max.

  • 5
    It really works!

    Posted by Jim B. on 19th Jun 2016

    FINALLY A PRODUCT THAT REALLY DOES WORK We used blue max product on a leaking brick wall in a warehouse.when it would leak it would create black mold.we tried many other brand name products that were suppose to take care of this issue. they all failed very quickly. I found this product on line . I called your customer service dept. and asked for a recommendation.i used what was recommended and It performed just as I had hoped it would and more impressive just as the company had told me it would. very pleased with product and would highly recommend it.

  • 5
    We tried everything

    Posted by Chase S on 8th May 2016

    Only thing that worked. My basement leaked every since I moved into my house. We have tried every product out there and they all had the same results, didn't work. We applied 2 coats of Blue Max and had our first winter with it and it hasn't leaked at all. I would highly recommend this product for basements. The customer service when I called in was fantastic as well.