[Richard_N_S]

This wasn't the only spot where it was doing it either. Also, it only happens where water is settleing. But as far as ponding goes, it's minimal at best, but the seperation still occurs.

The rep from Henry's said if water settles more than 48hrs they will not warranty the product. 48 hours! Are they nuts!? a good rain storm lasts more than 72 hours! So I have seperation where water will settle at 1/8-1/4" depth for a few days and they claim that's enough to void the warranty. That's insane!

Also, the ponding is where there are minor elevations from overlaped seems, which will always exist, especially from repairs, which means the product has a lousy warranty.

Whatever it is, the application was followed and it failed. That's all it comes down to. Switching materials. Bye bye Henry.

 

[1985gt]

Ponding = water left over after the rain has stopped. Most manufactures have guidelines about this. Also most if not all coating manufactures require positive drainage. Although I don't like henry's products, with the exception of their aluma coating it doesn't sound like its all the materials fault.

Got a over all photo of the roof?

 

[thom]

Ponding = water left over after the rain has stopped. Most manufactures have guidelines about this. Also most if not all coating manufactures require positive drainage. Although I don't like henry's products, with the exception of their aluma coating it doesn't sound like its all the materials fault.

Got a over all photo of the roof?

I don't think so. Even a roof with positive drainage will have "ponding" at the seam bumps. How long will it pond? If the rain lasts 3 days I doubt anyone can get it dry in 24 hours.

 

[1985gt]

I don't think so. Even a roof with positive drainage will have "ponding" at the seam bumps. How long will it pond? If the rain lasts 3 days I doubt anyone can get it dry in 24 hours.

Then clearly the roof doesn't have very good positive drainage. Seam laps are 1/4" at the max. Even on a 1/8" per foot slope that "pond" will be gone in less then 24 hours. Either way thats not really a "pond".

From GAF Top Coat web site. I don't think 1/4 of water is "ponding" Versico's EPDM is 1 or 2" in 48 hours.


MB Plus is designed to protect and restore aged roofs. This product can be used on modified bitumen, BUR, Hypalon®, metal as a primer, wood, and concrete. For use with water-based sealants and top coats only. Substrate shall not pond water for a period longer than 48 hours. Surface must be free of ponding water, ice, snow, and debris prior to application. Do not apply at temperatures below 42°F. Substrate temperatures must be below 120°F when applying product.

 

[thom]

Then clearly the roof doesn't have very good positive drainage. Seam laps are 1/4" at the max. Even on a 1/8" per foot slope that "pond" will be gone in less then 24 hours. Either way thats not really a "pond"..

Your time-line is a bit off. It cannot even start drying until the rain stops. 3 days rain means the "ponding" will exist a minimum of 3 days.

If the issue with Henry is how long it stays wet, that will always be a function of how long it rains.

Here in Albuquerque it's not an issue, but some places (Pacific Northwest) it will go a long time wet.

 

[1985gt]

I don't think I'm the one off, Ponding according to manufactures is water standing on a roof after the rain has stopped. It has nothing to do with water flowing off of the roof during a rain. It has everything to do with what water can do just sitting on a roof heating and cooling. The reason the coating failed is one of the reasons I posted before.

Bad prep, moisture under the original roof. Hole in coating. Coating not comparable with patching material, one other thing I forgot was it could have not been installed properly, to thick or thin. Both are equally as bad. I'm not saying the installer has screwed up but one of these is the reason the coating has failed. It's their job to figure out why. I'm just posted suggestions.

 

[JWilliams]

1985gt 1/4 laps in what?

 

[OldNBroken]

Ponding according to manufactures is water standing on a roof after the rain has stopped. It has nothing to do with water flowing off of the roof during a rain. It has everything to do with what water can do just sitting on a roof heating and cooling.

+1 :thumbup:

 

[1985gt]

1985gt 1/4 laps in what?

That would be 1/4" hight. Kind of figured that was self explanatory when reading the whole thread.

 

[JWilliams]

no need to be a smarty pants i just misread

 

[1985gt]

Sorry just use to the trolling that sometimes happens here Just trying to help him out.

 

[JWilliams]

its all good there buddy no offense taken

 

[niko1414]

Richard,

Private Message me, may have a similar job in OC if interested. or ping me at lagunabeach1414@gmail.com