Coachmen 300 BHS leak
I recently purchased a 300BHS. On its maiden voyage, it rained pretty hard out and I ended up with a puddle of water in the bunk room. This is just an FYI tpost for anybody that ever had a similar issue.
After examining it, I was able to figure out that the gutter rail was not straight from front to back on top of the trailer. In the rear over the outdoor kitchen door, it was basically a gully where no water made it past it and out the downspout. Instead, it just pooled, overflowed down the side of trailer, and then on top of the hinge to the outdoor kitchen door. From there, the water was able to get in, pool under the counter, and works its way into the trailer.
Coachmen was great when I contacted them about a warranty repair. i sent them pictures and a video of water coming off the roof and how it was overflowing due to the gutter rail. After some communication, they determined it was a simple fix of realigning the gutter and I should contact my dealer. They also took my video and showed it the production manager so it would emphasize the importance of getting that gutter rail on straight. When I put a 48" level where the gully was, it was drooped about 3/8" of an inch.
I contacted my dealer and the soonest appointment was 3 weeks. So I ended up having to fix it myself rather than wait 3 weeks and pray there's no rain between now and then. Fixing the gutter was easy since it was about 12 screws that needed adjusting, but resealing it with the special roof sealant can be a mess.
Overall, love the trailer and Coachmen's help. If anyone is leaking, hopefully this can help at least one person with an idea of what to check and verify.