5121 ALPHATHANE 100% Solids Self-Leveling Sealant - Various Colors (9.8 Oz. Tube)

In stock
Starting At $14.95

Repair and seal your RV's roof top with Lippert™.

Quick Facts:

  • Available colors: white, gray, black, beige or almond
  • Forms permanent elastic bond
  • Designed to withstand all weather conditions
  • Perfect for RV roofs and horizontal surfaces
  • Helps prevent air and moisture intrusion
  • Non-shrinking
  • Non-yellowing

Trust the Name the Pros Use

When it comes to repairing and maintaining your RV's roof, windows, vents or doors, look no further than Alpha Systems. Exclusively distributed by Lippert™, the Alpha lineup of adhesives, sealants, tapes and roofing kits are specifically formulated to work together as a holistic system for your RV. Our 5121 ALPHATHANE self-leveling sealant is a must-have when repairing flat surfaces like your RV's roof. This is a high-strength, self-leveling, sealant that can withstand the wear and tear of outdoor elements. It exhibits excellent adhesion to wood, metal, glass, and most other common construction materials. Plus, once cured, it doesn’t shrink, and it can handle the shock and vibration caused by travel.

What's Included

The 5121 Alphathane self-leveling sealant comes in a single tube and is available in white, beige, gray or almond color options.

Everything You Need for Your RV, Under One Roof

With Alpha Systems, you get a holistic system of premium RV repair and maintenance products all designed to work together. From our self-leveling sealants to our butyl tapes, each Alpha product is carefully formulated in our labs and tested for superior performance. Our standard is to never settle for status quo. We’re constantly raising the bar, innovating and improving our family products, in every detail. That’s why RV manufacturers, dealerships and service technicians throughout the industry trust our name when it comes to giving their customer a product they can rely on. And better yet, all of our high-quality sealants, adhesives and tapes are made in the heart of RV country, right here in the USA.

Alpha Systems, trusted by the pros, formulated for your RV.


  • COMPATIBILITY — Great for flat, horizontal surfaces on your RV like your rooftop
  • MADE TO PERFORM — Provides a high-strength adhesion to wood, metal, glass and most other RV roof materials
  • RELIABLY DESIGNED — Once completely cured, this sealant is formulated to withstand rigors and vibrations of RV travel
  • CUSTOMIZATION — Available in Beige, Gray, Almond and White to match your RV's aesthetic
  • ALPHA — Alpha Systems provides a holistic lineup of tapes, sealants, adhesives and cleaners all formulated for your RV

Application Instructions:

  • Ensure substrates are clean, dry, and free of oil and moisture
  • Exercise extra care during application to avoid air or debris entrapment
  • This product can be applied by a standard caulking gun
  • Do not use at temperatures below 40 degrees Fahrenheit
  • Once applied, do not handle, move, or pack for 1 hour

Warning: Cancer and reproductive harm. www.P65Warnings.ca.gov
More Information
Brand Alpha Systems
Quantity In Package 1
Sealant Type Self-Leveling
Sealant Features 100% Solids
Country of Origin USA
Unit of Measure EA
Warranty Term 1 Year
Reference Vendor/Manufacturer Name Alpha Systems
What's Included Non-Sag Sealant Tube

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