We had a lot of problems with the Weldwood. It was too sensitvie to the heat. We had to apply veneer to the inside wall of the aft bulkhead in our boat. the problem is that in our slip, that bulkhead faces teh sun most of the day and it was heating up and causing the veneer to bubble.
We used the Water based contact cement following this procedure and it solved our issue:
Apply 2 coats of the Water based contact cement to both the veneer and the surface you are applying it too. After the first coat drys, apply the next coat. Once this second coat drys for about 20 to 30 minutes, apply the veneer in the technique you choose. We then rolled out the veneer with a roller. Following this, we used an iron on low/medium heat covered witha lint free clean rag and ironed the entire veneer. about 2 weeks later got 3 to 4 bubbles in the veneer, we re ironed the entire thing and have not had any bubbles since.
Hopefully this helps.