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Customer Reviews for Lanco Ultra Siliconizer 1 Gal. 100% Acrylic Elastomeric White Reflective Roof Sealer

Internet #202086638

Model #RC905-4

Store SKU #548858

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

Customer Reviews

  • 4.7
    out of 569 reviews
  • 89% recommend this product
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Showing 1-30 of 569 reviews
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  • Verified Purchase
Outstanding stuff!!!
My Florida house has an enclosed porch with a flat roof, and whatever insulation is up there, just wasn’t doing the job. Rolled this over asphalt shingles and it lowered the inside ceiling temperature significantly (~14 degrees) confirmed by laser temp gun. Highly recommend this product!!
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    • Recommended
    1 found this review helpful
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    • Verified Purchase
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    • Verified Purchase
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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
      2 found this review helpful
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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
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      • Verified Purchase
      Used for a camper roof, made it look brand new....
      Used for a camper roof, made it look brand new.
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      • 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
      Wish I knew about this years ago....
      Wish I knew about this years ago.
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      • 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!
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      • 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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      Showing 1-30 of 569 reviews

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      Price:
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      Compare Similar Items

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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/Masonry

      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, Metal Roofs

      Coating Base

      Acrylic

      Acrylic

      Acrylic

      Acrylic

      Application Method

      Brush On, Roll On, Spray On, Squeegee

      Brush On, Roll On, Spray On

      Brush On, Roll On, Spray On, Squeegee

      Brush On, Roll On, Spray On

      Features

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

      Algae Resistant, Corrosion Resistant, Extreme Heat, High Wind Resistant, Ice and Water Shield, Mildew Resistant, Paintable, Rust Resistant, Water Resistant

      Algae Resistant, Cool Roof Certified, Corrosion Resistant, Extreme Heat, High Impact/Hail Resistant, High Reflectivity, High Wind Resistant, Impact Resistant, Mildew Resistant, Paintable, Rust Resistant, Water Resistant, Waterproof

      Algae Resistant, Cool Roof Certified, High Reflectivity, Mildew Resistant, Water Resistant

      Approximate Coverage Per Gallon (sq. ft)

      50

      200

      50

      50