90 days is correct for any sealants and adjustment. That doesnt include any physical parts needed, parts are covered under the 1 yr limited warranty.
Roof sealants, sealants around windows, door or body panels are only covered for 90 days.
I got to know the local mobile Thor tech/field rep as i had several issue they helped get corrected on my 2017 Windsport. He stated the sealants should be checked and resealed on an annual basis at the minimum. Dicor for the roof and clear Silicone for the windows and body seams. Get handy with a caulking gun and you wont have any issues.
Stay in contact with Thor directly if you have to go to a dealer for issues. They can be very helpful when a dealer is not.
P.S. My dealer did not advise of the 90 day warranty either. I found out later from Thor.
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