Sealant For Installation Of Go Power Overlander Expansion Kit
Updated 07/31/2026 | Published 07/28/2026
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Question:
I'm adding the Go Power Overlander Expansion Kit to my travel trailer. Is Dicor the right sealant to use during the installation?
asked by: Chris P
Expert Reply:
Hey Chris! Yes, Dicor Self-Leveling Lap Sealant # DC94SR is a great choice for installation of the Overlander Expansion Kit # 34282182. You will also want to pick up some butyl tape # DC38SR.
The butyl tape will go under the mounting brackets, and you'll apply the Dicor over the screws and around each mounting point. This will create a flexible, weatherproof seal that helps keep water out. I actually installed this same kit on my own trailer, which you can see below.
However, if your trailer manufacturer specifies a different sealant for its particular roof material, I'd follow that recommendation.
Are you adding this to an existing solar system or starting from scratch?
(click to enlarge)
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Go Power Overlander Expansion Kit - 200 Watt Solar Panel
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Kevin
7/30/2026
Dicor is fine on fiberglass. Its instructions state specifically that it can be used on fiberglass. Ever been on a fiberglass camper roof? Its likely covered in Dicor or some other similar self leveling, non silicone sealant. Using silicone is ok and may be a personal preference but it is the outlier in the industry and will pigeon hole you into using it continually in the future since nothing else will stick to it.