Zar Ultra Max Semi over Cetrol CRD?

yogi_bear_79

We chose to match our internal timber trusses with the outdoor ones. Thus we used the Cetrol CRD on everything. We used ZAR Ultra Max on non stained pieces, knotty pine tounge and groove paneling. There are still some accent pieces to be stained with the Cetrol, and we see the need to protect them with a clear/poly. Is it possible to use the ZAR over the Cetrol? If not is there any clear/poly suggestion that I could do? Both companies were less than helpful in my quest for this answer It isn't the end of the world if we cannot, but it would be nice to apply a semi gloss over some of the interior pieces that may see touching..

poppameth

We've run into this in the past. First of all you should never have used SRD on the inside of the home. It off gasses pesticides and antimicrobial agents that you don't want to be breathing. Sikkens recommended to use their interior oil clear coat over it, BL Interior Clear if I remember correctly. We've never carried much interior Sikkens before. It only comes in Satin now I believe. I haven't messed with it enough to know how much difference there is between it and the ZAR product. You could just do a test board and see what happens.

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yogi_bear_79

Was considering the test board. My only concern was, will the problem be immediate, or is it possible to show up later down the road?

Brushjockey

Yogi- i'm sure that both companies danced around because you we're using the Certrol beyond its intended use- and the Zar was not made or tested for this use. Im sure neither would commit.
Because you are in uncharted waters, it's hard to say what would happen. But if you are daring, give it a shot.
The Zar Max is my fav indoor waterborne clear- a joy to work with.
Do a test board ( or a unnoticeable spot on your beams)
If it isn't compatible it might:
Bead up or fish eye right away-
Turn cloudy when it dries
Delaminate- and this is the hard one- could happen later.

Let us know what happens- GL

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