View Full Version : Applying rubber seam compound in hot weather

ron ll
07-17-2015, 10:14 AM
I have to apply some Teak Deck Systems rubber into some seams over new okum today. The problem is that it will be about 85 F for the next few days and I'm concerned about the rubber bubbling before it sets. The seams are on the foredeck and in direct sunlight and almost impossible to rig shade over. There isn't a large area to do and I'm thinking it might be best to start at 4:00 or 5:00 pm when the temp starts to drop. Does that sound right?

07-17-2015, 12:38 PM
On a true laid & caulked deck waiting sounds like it might be the safe thing to do. There should only be concern about bubbling if there is air trapped below the TDS that can expand in the sunlight, and on a true laid & caulked deck you really can't expect to eliminate the air in he caulking. Have you called the people at TDS to hear what they have to say?
I'm doing the same thing today (caulking my foredeck), but I don't have the same concern. I had to rebuild the deck as a composite deck (re-laid the original teak over a ply & glassed new subdeck) so I don't have the same concern. The seams are square bottomed & there is no caulking. If I have bubbling it is because I didn't get the TDS to the bottom of the seam.

Out of curiosity, how heavy is your planking? Using oakum instead of cotton(?), should be pretty heavy planking.

ron ll
07-17-2015, 01:04 PM
Yes, it's 1-1/2" old growth fir deck. I had it professionally recaulked a couple of months ago and he decided to use okum. I put the TDS in at that time but I've been having leaks where the foredeck planks go under the trunk cabin. So I pulled the TDS out of that corner joint and some of the plank end joints and the caulker came back and reset the okum. So now I'm replacing the TDS in that joint. It's a large gap and will take a lot of rubber, therefore my concern about bubbling. My theory is that if I squeeze it in after 5pm the temp should be dropping and pulling the goop in rather pushing it out. It's just a theory. :)

07-17-2015, 01:08 PM
Yep, heavy enough planking. :) Sounds like a good plan. I would agree with your theory. Good luck

Gib Etheridge
07-17-2015, 03:14 PM
I think I would lay it in in 2 or 3 separate applications, the last one being pretty thin. I've never been good at this, always had bubbles and craters, so next time I'll soak the decks and seams in CPES so the wood won't soak up black caulk, then mask the surface, then fill half way then fill and smooth with a putty knife once that has cured for a couple of days..

ron ll
07-17-2015, 03:22 PM
Next question; when does one pull the tape with TDS? Last time I pulled it while the goo was still fresh, fearing that waiting until it had set would cause release problems at the tape edges. But pulling it wet was when I managed to get more black goo on me and the boat than in the seams. Not looking forward to that mess again.


07-17-2015, 05:33 PM
I've been having no problem at 10 - 24 hrs. No mess at all & comes up with real clean seam edges.

Here is what I have

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16d5c72f1c00000010O12Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230106436.JPG/ps%3D50/r%3D1/rx%3D550/ry%3D400/?tn=-66950433

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16e90caef900000010O12Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230731636.JPG/ps%3D50/r%3D1/rx%3D550/ry%3D400/?tn=682069184

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16e8b8eed500000010O02Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230556184.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/?tn=-597313296

squeeze good and firm with the putty knife, and when peeled up.

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16ea726f2e00000010O12Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230137609.JPG/ps%3D50/r%3D1/rx%3D550/ry%3D400/?tn=1625789394

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16eb5baeaf00000010O02Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230304166.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/?tn=1733110829

And this is what comes up, nothing sticky on the hands.

https://im1.shutterfly.com/media/47a5d936b3127cc9ba16e92aaedf00000010O12Bbs3DVuzZA9 u3Gg/cC/f%3D0/ls%3D00200375837020150717230714502.JPG/ps%3D50/r%3D1/rx%3D550/ry%3D400/?tn=46196560