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Customer Reviews for Lanco Ultra Siliconizer 5 Gal. 100% Acrylic Elastomeric White Reflective Roof Sealer

Internet #202086637

Model #RC905-2

Store SKU #548821

  • For commercial, residential, and mobile home roofs
  • Silicone-modified formula for increased durability and adhesion
  • Provides waterproof seal

Customer Reviews

  • 4.7
    out of 564 reviews
  • 89% recommend this product
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Showing 1-30 of 564 reviews
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  • Verified Purchase
did the job just like it was supposed to. Easy to mop on, let dry and that's it
by
  • Verified Purchase
Lanco Elastomeric for roof
Quality product that was easy to apply on our flat roof. Looks great and no leaks!
by
  • Verified Purchase
  • Recommended
just not effective for flat roofs
So after spreading this on thick, and 20 gallons, i still had leaks. Spoke to roofer today who said this is junk for flat roofs. How can a water based product seal out ponding water. Im going to see if i can get my money back
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Response from Lanco Product ExpertJun 28, 2023
Hi Craig, sorry to hear that you were less than satisfied, wish I could have guided you before the application. Here even though Lanco® Ultra Siliconizer™ will resist standing water (for 50 hours), we suggest not to not to use on roofs with a slope less than 1/2 inch per foot. If used on roofs with slope less than 1/2 inch per foot, Warranty will be void. Roofs with less severe ponding areas and improper drainage will require annual maintenance and must be re‐coated yearly with an application of two coats of Lanco Ultra Siliconizer. Repair the areas where water may accumulate for more than 50 hours must be corrected by using roof drains or other available means before applying sealer. If level corrections must be made, use Lanco Ultra Level self‐leveling underlayment according to label instructions. Please feel free to reach our to our technical support team at 786-495-5944.
    • Recommended
    1 found this review helpful
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    • Verified Purchase
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    • Verified Purchase
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    • Verified Purchase
    Great product that does the job and at a great...
    Great product that does the job and at a great price..not for use on a rubber roof
    by
    • Verified Purchase
    Used for a camper roof, made it look brand new....
    Used for a camper roof, made it look brand new.
    by
    • Verified Purchase
    Very pleased with how easy the product was to spread...
    Very pleased with how easy the product was to spread on a roof, and even more impressed with the temperature drop in the afternoon's. This flat roof covers my office and I'm seeing a -4 degree drop in the afternoon to what I was seeing prior. Painted a 4 year old flat roof and saw amazing results!
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    • Verified Purchase
    1 found this review helpful
    Goes on easy and does the job!
    I use this to cover a black rubber roof on my mobile home. It went on smoothly and covered very well. My 10x50 mobile home used about 2/3 of the 5 gallon bucket. I can feel that my home is already cooler, which was my goal. My rubber roof was fine but the black absorbed the heat. I would highly recommend this product. A friend and I flip vintage mobile homes and will be using this on the next three projects.
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    • Verified Purchase
    • Recommended
    I use Lanco for all flat roofs. Overall...
    I use Lanco for all flat roofs. Overall pleased with effectiveness but I re-seal every 2-4 years just in case. Cheaper than a roof repair / replacement.
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    • Verified Purchase
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    • Verified Purchase
    I got the materials a little earlier than I thought,...
    I got the materials a little earlier than I thought, it seams to look ok
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    • Verified Purchase
    Easy to use, and makes a strong coating...
    Easy to use, and makes a strong coating
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    • Verified Purchase
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    • Verified Purchase
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    • Verified Purchase
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    • Verified Purchase
    Wish I knew about this years ago....
    Wish I knew about this years ago.
    by
    • Verified Purchase
    Great product. My wife and I did a lot...
    Great product. My wife and I did a lot of research to find the right product for a concrete roof. Excellent customer service from Justin at Lanco!
    by
    • Verified Purchase
    Great Coverage Used to Coat the Top of Our Travel...
    Great Coverage Used to Coat the Top of Our Travel Trailer Not Too Messy
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    • Verified Purchase
    1 found this review helpful
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    • Verified Purchase
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    • Verified Purchase
    Surface sealer
    Good stuff surface need to be very dry and at least 3orfourdaysofdryingtimebeforeanyrain
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    • Verified Purchase
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    • Verified Purchase
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    • Verified Purchase
    Saved our roof!
    Hurricane Ian took many of the roofs in our community. Our roof, treated with Lanco sealer, sustained no damage!!! I highly recommend!
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      • Recommended
      Excellent Product
      Used for my flat roof on the Gulf Coast and no leaks for over 3 years. Also recommended it to a school district in Florida that had flat torch-down roofs and was on a budget to stop the leaks. They found it to be a success.
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        Surface Recommended

        Coated Roofs, Concrete Roofs, Concrete/Masonry, Metal, Metal Roofs, Mobile Home Roof, PVC Membrane, Rubberrized-Asphalt, Rubberrized-Mastic, Rv Roof, Trailer Roof, Wood

        Concrete Roofs, Concrete/Masonry, Metal, Metal Roofs, Mobile Home Roof, Rubberrized-Asphalt, Rubberrized-Mastic, Trailer Roof, Wood

        Coated Roofs, Metal, Metal Roofs, Rubberrized-Asphalt, Rubberrized-Mastic

        Coated Roofs, Metal, Metal Roofs, Rubberrized-Asphalt, Rubberrized-Mastic

        Coating Base

        Acrylic

        Acrylic

        Acrylic

        Aluminum

        Application Method

        Brush On, Roll On, Spray On, Squeegee

        Brush On, Roll On, Spray On, Squeegee

        Brush On, Roll On, Spray On

        Brush On, Roll On, Spray On

        Features

        Algae Resistant, Cool Roof Certified, High Reflectivity, High Wind Resistant, Mildew Resistant, Paintable, Water Resistant, Waterproof

        Algae Resistant, Cool Roof Certified, High Reflectivity, High Wind Resistant, Mildew Resistant, Paintable, Water Resistant, Waterproof

        Cool Roof Certified, Corrosion Resistant, Extreme Heat, High Impact/Hail Resistant, High Reflectivity, Mildew Resistant, Rust Resistant

        Cool Roof Certified, Corrosion Resistant, Extreme Heat, High Impact/Hail Resistant, High Reflectivity, High Wind Resistant, Ice and Water Shield, Impact Resistant, Rust Resistant, Waterproof

        Approximate Coverage Per Gallon (sq. ft)

        50

        50

        100

        75