Recommended Tape and Sealant to Install a Manual RV Roof Vent on a Trailer's Metal Roof
Updated 11/08/2026 | Published 10/30/2026
Products Featured in This Question
Question:
What do I need to seal the vent to the metal roof of a cargo trailer? Will putty tape seal it? Also can it be closed to stop or limit airflow?
asked by: Richard R
Expert Reply:
Hey Richard. To seal the MaxxAir Mini Manual RV Roof Vent item # MA00-03700 to the metal roof of your cargo trailer, you'll need the Butyl Tape item # HN428FR and XTRM Self-Leveling Sealant item # 34427034145-1. You do not want to use putty tape for anything long term on a RV. It gets brittle and cracks pretty quickly.
The MaxxAir Mini Manual RV Roof Vent item # MA00-03700 can indeed be closed to limit or completely stop air flow. There's a sliding lever on the top of the interior piece that can be easily reached. I attached a picture below so you can see it. We also have this roof vent in black item # MA00-03750.
The XTRM Self-Leveling Sealant item # 34427034145-1 is a flexible white sealant that is compatible with your metal roof. It's designed to flex with the movement of your RV so it won't harden and crack like putty tape will. The Butyl Tape item # HN428FR will provide you with an extra seal. You'll want to place them around the bottom edge of the item # MA00-03700 vent housing where it is screwed down to the roof. You'll want to make sure you cover the screws and the edge. This will prevent water from potentially getting under that edge and leaking into your roof.
What do you use your cargo trailer for? Feel free to answer this and throw in any other questions you have, where it says Add Comment.
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Product Page this Question was Asked From
MaxxAir Mini Manual RV Roof Vent - Non-Powered - White
- RV Vents and Fans
- Vent
- Roof Vent
- Manual Lift
- No Fan
- Plastic
- White
- MAXXAIR
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on RV Vents and Fans
Richard R.
11/2/2026
Thank you for the response Jarred. Going to use it on a 7 X14 cargo trailer to sleep in for a couple of nights during deer hunting season. A kerosene heater and a couple of cots, and we should be good. The trailer also has a built in air intake and exhaust that are always open. Just looking for a little more ventilation. Also looking for a sliding or crank out small window. Was surprised that you didn’t handle them when I searched. Thank you for the information. Trailer has been my go to for supply’s at a reasonable price.