I'm re-doing my front casting deck, and I'm wondering which way to seal it before carpeting. The "Roberts" indoor/outdoor carpet adhesive I bought from Home Depot suggests not applying it over paint. Does anyone know if it will work over painted plywood? If not, what should I use to seal plywood? Thanks.

There isn't any need to paint quality marine grade treated plywood. You don't want to use anything but treated plywood or you will simply be doing all this work over again long before you would need to.

I'm not using marine grade plywood. I'm using CDX plywood. I just want to make sure the above adhesive will adhere to the paint. I want to get it painted/sealed today. HELP !!

Do not coat the plywood with paint or fiberglass resin. CDX is about the cheapest, and inadequate plywood you can get. It is produced for sheathing sidewalls and subflooring, and not much else.

It will have voids and all other manner of defects such as open splits in the veneers, and open knot holes. You cannot depend on it to hold fastenings because there may be a void in the inner plies that you cannot see. Cheap is not always economical.

But, if you must use it, coat it with a product like Gluvit or some other epoxy product. It will bond much better than paint or fiberglass resin and should be compatible with carpet adhesive..

The downside is that the price might scare you away. It's almost a waste of money to use it on CDX grade plywood, in my opinion. .

Thanks