Leak opinions and help?

[Agoogol]

We have redone all the windows and sealed the roof. I still have a leak so I must be missing something and I wanted to see the opinion and knowledge of the folks here. Is it possible to have a leak coming through these screws and/or the seem of this back panel right above the screws? It doesn't seem likely but water goes in unique ways. If it is indeed possible, what is best way to seal this particular seam?

 

[74_Coach]

Where, exactly, are you seeing the drip drip drip or is it a flow?

 

[Agoogol]

Where, exactly, are you seeing the drip drip drip or is it a flow?

It appears to be on the floor after it rains, doesn't appear to be coming down the side or channel or window in any way, more towards the back underneath the big window is where it seems.

 

[74_Coach]

Check the rear window weatherstrip as mine leaks and it’s getting replaced on the 20th. Also check either the AC unit or vent on the ceiling for leaks.

 

[T McManus]

The only way to find the leaky area's is to do a positive air/ bubble test. http://www.gmcmhphotos.com/photos/g7119-water-leaks.html

 

[LARRYT]

we have used latex caulk on all the screws and filling the rear panel gap.. no leaks fyi Larry

 

[74_Coach]

we have used latex caulk on all the screws and filling the rear panel gap.. no leaks fyi Larry

Yes and the side rails plus end caps need to be re-sealed after 45 years. Look closely at the side rail with the cap removed and you will see a large hole that is exposed to the cabin just above the passenger seat. In my case, water was flowing through that hole and down the inside wall. After sealing this area and end caps, no more leaks.

The driver side rail had another wrinkle besides the end cap leaking. When GM installed the driver side rail, they missed the channel used to drill the mounting screw hole that left a 1/4” gap between the rail and roof. This gap was filled with some sort of green body putty that had hardened over the years.

 

[Jim (Jericho Brew)]

For sealing the roof I used Dicor Lap Seal. Use it on everything that penetrates the roof, screws, seams. https://www.amazon.com/Dicor-Self-L...cphy=9002285&hvtargid=pla-1388758333851&psc=1 This works far better than any silicone product I've tried. For the seam on the rear cap I used EPDM closed cell tubing without any sealant. https://www.amazon.com/Trim-Lok-Cor...locphy=9002285&hvtargid=pla-307821205590&th=1

 

[Agoogol]

For sealing the roof I used Dicor Lap Seal. Use it on everything that penetrates the roof, screws, seams. https://www.amazon.com/Dicor-Self-L...cphy=9002285&hvtargid=pla-1388758333851&psc=1 This works far better than any silicone product I've tried. For the seam on the rear cap I used EPDM closed cell tubing without any sealant. https://www.amazon.com/Trim-Lok-Cor...locphy=9002285&hvtargid=pla-307821205590&th=1

That closed cell tubing is exactly what I need to try I think. Thanks Jim. All other areas I think are sealed, the side rail end caps, seam on the top, AC, Fan etc. Will give it a go.

 

[ScottC]

For sealing the roof I used Dicor Lap Seal. Use it on everything that penetrates the roof, screws, seams. https://www.amazon.com/Dicor-Self-L...cphy=9002285&hvtargid=pla-1388758333851&psc=1 This works far better than any silicone product I've tried. For the seam on the rear cap I used EPDM closed cell tubing without any sealant. https://www.amazon.com/Trim-Lok-Cor...locphy=9002285&hvtargid=pla-307821205590&th=1

I will be sealing the roof soon, I noticed Dicor states not for use on vertical surfaces, just wondering if you had any issues on the side roof seams, maybe to runny? I know Jim Bounds uses Wurth Bond & Seal so that is what I was going to order. Please let me know your suggestions or experiences with either product.

Thanks for the links!

 

[Agoogol]

I will be sealing the roof soon, I noticed Dicor states not for use on vertical surfaces, just wondering if you had any issues on the side roof seams, maybe to runny? I know Jim Bounds uses Wurth Bond & Seal so that is what I was going to order. Please let me know your suggestions or experiences with either product.

Thanks for the links!

Dicor makes a non-leveling version that works on vertical surfaces.

 

[Jim (Jericho Brew)]

I will be sealing the roof soon, I noticed Dicor states not for use on vertical surfaces, just wondering if you had any issues on the side roof seams, maybe to runny? I know Jim Bounds uses Wurth Bond & Seal so that is what I was going to order. Please let me know your suggestions or experiences with either product.

Thanks for the links!

Dicor self-leveling is indeed tricky on the roof side seems. I had to work it while it setup a bit. Dicor does have a regular lap seal that maybe better and easier to work with.

 

[boybach]

I used a combination of sikaflex and where I could use tape, eternabond.

 

[ScottC]

The no sag, no self leveling is Dicor 551

 

[Bill Bugg]

Has anyone tried Aluminum Boat Leak Sealer by Total Boat? Have been using it for several years on my 38' Aluminum power cat with no issues. I am planning on using it on the roof trim on my '77 Kingsley. TotalBoat-Aluminum-Boat-Leak-Sealer-with-Tips.jpg It adheres Starboard!!

 

[pdxbirchy]

Check the rivets on the top and around the roof lights?