[perpetualjon]

So I helped a friend build a covered patio over the back wall of his house facing the back yard. This means that what once was an exterior stucco wall is now an interior wall. The wife asked me if there was a good way to cover over the stucco to smooth out the finish (maybe even mix in some paint to the mix). I was thinking of using a thinset but with a stiff mix so it will hold vertically. Any ideas?

 

[Ron6519]

Has the stucco been painted? If it has, thinset won't adhere too well to the surface. If you only put on a cover, it's still an exterior wall. It's exposed to moisture, heat, cold, etc... Which is it, interior or exterior?
Ron

 

[perpetualjon]

The wall has been painted. The phrase "covered patio" is actually a silly term for a room addition that has very little permit or code requirements as it's considered just a patio that happens to have some walls, windows, and doors. It's not load bearing either. For sure, the wall that once was the exterior wall is not an interior wall...

But with all the surface roughness of a stucco finish, wouldn't that help with the adhesion of thinset?

 

[Ron6519]

So it's basically a three season enclosed porch. No heat? It has windows to keep water from getting the interior wet?
Thinset does not adhere well to rough painted stucco. The thinset will be attached to the paint, not the stucco wall. Are you sure it's not pigmented stucco? If it's only pigmented, you can use thinset to smooth it out. You might need to prime it with something to give the wall greater adhesive characterisics.
Ron

 

[perpetualjon]

The addition has no individual heating but its joining the house through a sliding glass door that's kept open all the time so the living room air conditioning helps quite a bit. I think they're using an electric space heater in the winter and some fans in the summer. There's no way of getting the interior wet either. There are windows and doors. I've knocked some of the stucco away and only see paint on the exterior surface so I'm assuming it wasn't pigmented...

So, is there a better product I can use than thinset? Or will anything I use still have to deal with bonding to the paint no matter what?

 

[Wildie]

Can you run furring strps and hang drywall over top of the stucco?

 

[perpetualjon]

I guess I could but I was hoping for a lot less work than that!!

 

[Wildie]

Life is never easy!