dilute or not on first coat?

[noyu]

I am preparing to use the waterborne epoxy primer as the base coat then the epoxy itself and someone told me to dilute the primer with water just a bit for better adhesion, is that true?

 

[boiler7904]

What system are you using?

Only dilute it if the instructions say to.

 

[noyu]

What system are you using?

Only dilute it if the instructions say to.

I bought the Devoe Coating by ICI, they are for industrial use.

Here is the specs of the primer:

http://www.duspec.com/datasheet/dat...30&documentType=datasheet&submit=Get+Document

 

[Shogun]

I am preparing to use the waterborne epoxy primer as the base coat then the epoxy itself and someone told me to dilute the primer with water just a bit for better adhesion, is that true?

Do EXACTLY what the instructions say to do. If adding water would make the primer stick better, don't you think the company would have added it in the beginning? Top quality paint is formulated to stick as best as possible how it is.

 

[Steve in Mi]

It does mention thinning in the spec.'s as it affects drying time so I take that to mean that thinning is done. If it was me, I'd make sure that the "someone" that suggested it was an ICI rep. and maybe ask him to put it in writing. I'm confident that my local Gliden store would get the answer and back it up, I suggest you check with your contact on the matter before you thin it.

 

[Hammerdown]

I would not dilute any product without the specific recommendation of that product or manufacturer. The water based epoxies seem like a perfect candidate, but by diluting them you could be doing more harm than good. It will thin the product which typically increases its coverages, but will reduce the color/pimentation of the coating. Use only dilstilled water, and only with MFG recommendation.

 

[noyu]

Thanks for all the responds / post!

I guess you guys are right, unless the manufacturer recommend thnning otherwise will just apply it straight from the can after mixed.

One more questions: what do you guys use to repair / patch larger flaws such as little holes and cracks wider than quarter of an inch?

I already bought some epoxy base crack filler from simpson strong tie (Crack-pac) for hairline crack and such.

Can I use the self bonding cement (I think people call it hydraulic cement)?

Thanks again!

 

[Hammerdown]

You could use an acrylic tile thinset or a two part epoxy patch as well, I have even used bondo in a pinch. You really just want to make sure the product does not contain silicone, that it is paint-able and you follow its cure time. I prefer epoxy patches because they get a good bond to the epoxy coating. I will fill in and let it cure for 8-12 hours, lightly sand it and then coat it. I tend to stay away from cement patches, as they can pop up easier than epoxy ones.