I have a 7,000 sq. ft. walk-in freezer about 18 years old. The seams between the ceiling panels are not sealed well anymore. Access to the top of the panels is not possible. I need some ideas or product that will help me seal the joints.
I have tried silicone, wet and dry roof cement, thumb gum, foam insulation tape, cork tape, and rubber strips. All sandwiched between a 4" strip of .090 aluminum
I have lots of condensation between the top of roof panel and roof deck (we are addressing this problem) so there is sitting and dripping water coming in. The temp inside the box is 0 to 5 degrees normally. Any help would be greatly appreciated. Thanks in advance.