If the pressure treated wood has aged out and dry, several coats of enamel paint will do the trick. I took a piece of aged lumber to Home Depot and had them mix a color close to the wood in color to avoid a stark color change in my gazebo. After putting all the plants back and hanging the tillandsia it looks fine. Might not be to your liking but it did solve the problem.

Hi

In my experience, what ever type of barrier you use, be it paint, PVC wrapping or whatever, it must prevent the plants from contacting the actual treated timber and prevent water drips from the treated timber contacting the plants. It's a good idea to move any plants that are directly beneath roof timbers also.

All the best, Nev.

Thansk for your comments

I am based in the Florida area. To my understanding, enamel paint doesnt hold up well in this area and I will have to constantly reapply the paint. What type of enamel was used for your wood? Was a primer also applied?

What about staining the wood?

I just dont want any of my bromeliads handing under the pergola to be damaged by the copper. Wish I known this before the structure was built

My climate is very much like yours. Hot and humid. I used a paint with the primer in it and put on 2 coats. I have had no problems with my broms, before I had leaf and cup damage on my neo's. I would say that it depends on how old your wood is. I have a section of very old treated timbers and have had no damage at all so I didnt paint it. The new flat enamels seem to hold up very well in the heat and humidity.

When I did mine, I primed all of the timber including all the ends where I'd cut, then gave it all an oil based undercoat and then two finish coats of oil based paint as well.

I have since been told that once the primer and undercoat are on you can finish with a couple of coats of good quality acrylic paint.

If you like to send me your email address I can send you some notes on other options to overcome your problem without painting. Incidently I now have a new email address to the one shown in my profile and it is splinter1804@hotmail.com

I don't know if "Vriesea" is reading this or not but he could advise you as he has been a professional painter all his working life and has plenty of experience with shade houses and brom's as well.

All the best, Nev.

I have always used treated timber and have only given it 2 coats of a top grade acrylic house paint ,and no problems ever.

Sorry for the delay, but thanks so much for your advices. I will definitely be in touch via email to retrieve the extra notes and I am also glad to hear that top grade acrylic house paint has not caused any problems.