Question for those more experienced with Weldwood contact adhesive.I'm in the process of redoing the interior of the one piece fiberglass shell that makes up the snap-n-nap on my amerigo tc-11 and need to install some wood to the interior edges so that I can anchor the RV wall board over the new insulation. Normally I would just apply 3m 5200 and screw it in place, but because there's no frame, and the angle at which its going in, this isn't practical.My thoughts instead were to apply weldwood contact adhesive to the fiberglass and wood so I can just press the piece in place, but I am wondering if this will be strong enough or will it lose the battle with gravity after awhile?

Weldwood is pretty good stuff but I would be hesitant to use it in the vertical were it could be exposed to big temperature change and heat from the sun . How about fiber glassing the filler boards to the shell . That's what they do on boats and truck caps for stiffeners , and they won't rot .

Weldwood is pretty good stuff and, from experience, I would say you have a 50/50 chance of success in using it. I built a Florida room for a friend who lives full time in Florida and had the same problem. I used Weldwood in putting up some of the moldings and, 10 years later, most of them stayed in place. I believe the ones that needed to be re-done were due to applicator error.

Changes in formulation may have occurred over time.Former high VOC materials have been modified to water based products, which often are not as good.Materials used ten years ago may not be the same materials available to you now.

ticki2 wrote:Weldwood is pretty good stuff but I would be hesitant to use it in the vertical were it could be exposed to big temperature change and heat from the sun . How about fiber glassing the filler boards to the shell . That's what they do on boats and truck caps for stiffeners , and they won't rot .Fiberglass cloth and resin is what I would use as well.

wapiticountry wrote:ticki2 wrote:Weldwood is pretty good stuff but I would be hesitant to use it in the vertical were it could be exposed to big temperature change and heat from the sun . How about fiber glassing the filler boards to the shell . That's what they do on boats and truck caps for stiffeners , and they won't rot .Fiberglass cloth and resin is what I would use as well.I was thinking this too. Setup a support brace to hold the work in place.

is weldwood contact adhesive strong enough? | Good Sam Community

wapiticountry
Explorer
Jul 04, 2020
ticki2 wrote:
Weldwood is pretty good stuff but I would be hesitant to use it in the vertical were it could be exposed to big temperature change and heat from the sun . How about fiber glassing the filler boards to the shell . That's what they do on boats and truck caps for stiffeners , and they won't rot .
Fiberglass cloth and resin is what I would use as well.
bighatnohorse
Explorer II
Jul 04, 2020
Changes in formulation may have occurred over time.
Former high VOC materials have been modified to water based products, which often are not as good.

Materials used ten years ago may not be the same materials available to you now.
chast
Explorer II
Jul 04, 2020
Weldwood is pretty good stuff and, from experience, I would say you have a 50/50 chance of success in using it. I built a Florida room for a friend who lives full time in Florida and had the same problem. I used Weldwood in putting up some of the moldings and, 10 years later, most of them stayed in place. I believe the ones that needed to be re-done were due to applicator error.
ticki2
Explorer
Jul 04, 2020
Weldwood is pretty good stuff but I would be hesitant to use it in the vertical were it could be exposed to big temperature change and heat from the sun . How about fiber glassing the filler boards to the shell . That's what they do on boats and truck caps for stiffeners , and they won't rot .

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is weldwood contact adhesive strong enough?

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