Replacing skylight dome

[96 Wideglide]

Planning on going belt and suspenders, with Surebond under the flange, and Eternabond over the flange.
I've run a strip of Eternabond over screwheads before, and don't like the inevitable air bubble around each. I'm thinking of laying the E'bond down first, then screwing thru it, and covering the screws with a dab of Surebond.
Anyone done it this way? Does the sealer stick well to the E'bond? I know the E'bond will need a wipe with alcohol or Acetone, before I put the Surebond on it.

[Spk64]

Originally Posted by 96 Wideglide

Planning on going belt and suspenders, with Surebond under the flange, and Eternabond over the flange.
I've run a strip of Eternabond over screwheads before, and don't like the inevitable air bubble around each. I'm thinking of laying the E'bond down first, then screwing thru it, and covering the screws with a dab of Surebond.
Anyone done it this way? Does the sealer stick well to the E'bond? I know the E'bond will need a wipe with alcohol or Acetone, before I put the Surebond on it.

I always like to think of Eternabond as a secondary seal. The primary being the caulk. So I would fully seal the skylight as if you were not putting down eternabond. Then put the Eternabond over top. I am not familiar with the Surebond product, but the Dicor self leveling flattens out nicely and the Eternabond then seals up well over it.

[96 Wideglide]

Surebond is the sealer recommended by skylight manufacturers. Dicor doesn't really stick very well to skylights.

[Ivylog]

I just replaced my 24X34 skylight and by using citrus air freshener I was able to get the overabundance of sealer off. I'm old school and have been using silicone seal on my RVs for 50 years so that's what I used this week. Different strokes for different folks.
08 HR Navigator

[Emac]

Originally Posted by 96 Wideglide

Planning on going belt and suspenders, with Surebond under the flange, and Eternabond over the flange.
I've run a strip of Eternabond over screwheads before, and don't like the inevitable air bubble around each. I'm thinking of laying the E'bond down first, then screwing thru it, and covering the screws with a dab of Surebond.
Anyone done it this way? Does the sealer stick well to the E'bond? I know the E'bond will need a wipe with alcohol or Acetone, before I put the Surebond on it.

This is the way I have done all of my items on the roof as the eternal one is supposed to be self sealing if you screw through it. I put a layer of eternabond down then mount what ever the item is and then dab sealant on top of the screw heads etc. best of luck and you will have zero leaks this way.

[96 Wideglide]

Thanks Emac!

I was sure someone out there had installed one the way I was proposing !

[Sweetbriar]

Any time you plan to use Eternabond AND additional liquid sealant might as well save the money and delete the Eternabond from the project. The whole idea of using Eternabond is to tape it and be done, forever. Add a liquid sealant exposed to the environment to the project then plan on heading back up on the roof to rework the seal sometime in the future, hopefully before the seal fails.

Every seal on my roof is taped. Skylight, vents, TV antenna, front/rear caps,,,. Every screw has been replaced with stainless steel and the threads were filled with a bit of sealant before being taped over. I have no exposed liquid sealant except at the awning mounting. Probably rework it this summer along with the fridge vent. I added a residential last summer so the vent is redundant. Tape it and be done, eternally. It's not just a catchy name. The stuff works. Trust it.

Sometimes suspenders and a belt isn't the best plan, at least from my prospective safely seated behind my keyboard.

[Stan&Jacquie]

I agree with Sweetbriar. Eternabond is meant to be the final solution. If you are concerned about air bubbles, be sure to flatten/apply the tape from the center outward to the edges to roll/squeeze the air out. But if you do get a bubble, simply puncture it with a utility blade and roll over it and it will reseal. My ebond job is in year three and it is awesome! Follow the manufacturer's directions!

[Emac]

Originally Posted by Stan&Jacquie

I agree with Sweetbriar. Eternabond is meant to be the final solution. If you are concerned about air bubbles, be sure to flatten/apply the tape from the center outward to the edges to roll/squeeze the air out. But if you do get a bubble, simply puncture it with a utility blade and roll over it and it will reseal. My ebond job is in year three and it is awesome! Follow the manufacturer's directions!

So what would the difference be between a screw going through the Eternabond or poking a whole in it with a knife? According to Eternabond it is self sealing just as you have described getting the air bubble out.

[Vanwill]

Most skylight failures are due to the way they are fastened to the roof. The acrylic or polycarbonate does not have a reinforced edge, and to compress the sealant well enough usually means the screws must be tightened enough that the plastic material is cracked, or soon will be.

If you have the capability, welding an aluminum frame to fit around the edges of the skylight will distribute the load and also make the sealant perform its job much better. If you cannot do that, you can cut short pieces of aluminum bar (1/8 x 3/4) to make "rectangular washers" and that will help quite a bit.

I've done the welded aluminum frame on two of the "neo-angle" skylights on two different motor homes. It was a permanent fix.

[96 Wideglide]

Yeah Van, thats the reason I need to replace the existing one, rather than just clean up the old sealant and re-install! Too much cracking around the screws.
I've seen the pic's of your alluminum frame. Wish I had the tools to do the same.