Difference Between Alpha Systems 1021 Self-Leveling Sealant and Dicor
Updated 12/30/2025 | Published 12/28/2025
Question:
What is the difference between AL98KV and Dicor lap sealant? I have always used Dicor in the past but my RV manual says to use the Alpha 1021
asked by: Michael F
Expert Reply:
Hey Michael, welcome back! The Alpha Systems 1021 Self-Leveling Sealant # AL98KV is going to do the same thing as Dicor as long as we're talking about a self-leveling sealant. The main difference is going to be the branding. They both use a butyl rubber base, exact composition may vary (I don't know everything Dicor is made of), but they will both work on your RV.
Since you have a new 2025 Rockwood MiniLite 2205S I would stick with what the manual says just in case you have some kind of weird warranty issue.
(click to enlarge)
Product Page this Question was Asked From
Alpha Systems 1021 Self-Leveling Sealant for RVs - White - 10.3 oz - Qty 1
- RV Roof Repair
- Sealant
- Self-Leveling Sealant
- EPDM
- Fiberglass
- Metal
- White
- Alpha Systems
more information >
Continue Researching
- Q&A: Expanding Go Power Solar on 2021 Jayco Eagle
- Q&A: Adding to Existing Go Power Roof Mounted Solar Panel on Geo Pro.
- Q&A: Can etrailer Solar Expansion Kit Be Used With Go Power Overlander Solar Kit
- Q&A: Atwood 87701 landing gear switch replacement
- Q&A: Will the 3034-P Brake Controller Adapter Work on a 2026 Jayco Redhawk on a 2025 E-450 Chassis?
- Article: 4-Step Guide to Installing RV Solar Power
- Q&A: Recommended Butyl Tape And Sealant For Installing A MaxxAir RV Roof Vent
- Q&A: What is the Best Caulk for my RV?
- Article: RV Roof Types: What Type of Roof Does My RV Have?
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Article: How to Measure for Travel Trailer and Fifth Wheel Steps
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Article: Is It Illegal to Leave My Hitch on My Truck?
- Article: Best Hitches for Travel Trailers (2022) - For a Smooth, Sway-Free Ride
David
12/30/2025
I completely agree, having used both. It seals horizontal surface areas with confidence. :-)