I am working on a lightweight coach with a roof hatch to allow access to the AC evaporator. I want to re-seal it to keep the rain out. To clarify, I do not want to simply apply some goop – like Henry's Roof Repair Cement – around the outside perimeter as seen in the photo. I have removed all of the cap screws that hold the roof hatch in place, and lifted the hatch up a few inches. I now want to apply some new sealant underneath the perimeter of the hatch. This is how the RR and the Carbuilder did it.

I can't tell exactly what was used previously to seal the hatch, but it looks like it was two layers of ¼" thick x 2" wide sealing tape of some sort, with burlap (!) at the top and at the bottom. The stuff I have used previously for this type of thing was self-adhering cork insulation tape that is normally used on hot or cold pipes to keep condensation from forming. It worked real well. But naturally, the product I used in the past isn't made anymore. I have done the usual Google searches, but that gets tedious real fast. So far, butyl rubber self-adhering sealing tape, 1/8" think x 2' wide, may be the closest thing I've found to what I am looking for. I will have to use 3 or 4 layers of that, as I need to get a thickness of 3/8" to ½" thick to do the job.

Does anyone in the RYPN Nation have any other ideas for this situation that have worked well for them in the recent past?

Thanks.

Try this:

http://www.kflexusa.com/HomePages/Produ ... 36&line=12

Or, from Grainger: http://www.grainger.com/Grainger/DIVERSITECH-Tape-2YJ69

I do know that the HVAC supply houses I deal with stock both a closed-cell foam pipe tape, and the sticky cork-based stuff.

Howard P.

You may want to check out the motor home supply stores like Camping World. I just bought a roll of aluminum backed adhesive tape 4"x 50' for my rv. Made by dicore products www.dicor.com. It is called DiSeal . -32 to 110F.

Not cheap but forms well around blots and screws if not too high. About $1+/foot. It really sticks, not sure how to remove it though.