Can you let us know the year, model and make of your trailer? Also we will need closeup pictures the full height of the slide to see if the seals are in contact with the side of the unit when closed. Also need pictures of the top corner of the seals with the slide open. The pictures will need to be in the sun so we can see detail without shadows. Post pictures of the side that leaks. 9 times out of 10, the seals are short or the slide needs adjusted.
2017 Salem Villa Estate 395RET-
2011 Coachmen Freedom Express 295RLDS- Sold
2015 F-250 FX4