I’ve read many articles regarding the sealing of framing to the slab; in my case Zip system to a concrete slab.  There appear to be several options for both fluid flashing and tapes such as 3M 8067, Siga, Pro Clima, etc.  One item that I have never found to be addressed is how to achieve long-term UV resistance if using one of the tapes.  From my understating, these tapes, even the very expensive ones, offer a limited period of UV resistance from 6-12 months.  However, when sealing to the slab, there will be a portion of the tape (let’s say 3″ of a 6″ tape) that is not covered by siding or other finish systems.  How is this being addressed?  I can’t be the first person that has had this question.

My particular situation is using the 3M 8067 tape sealing between Zip and the concrete slab.  Yes, I could use a fluid flash like Zip’s product to avoid the question/issue, but that is not a good option in this case.  This is due to the fact that the slab was not poured as square as it should have been and I had to substitute some 2×4 walls for 2×6 walls in order to allow for some overhang in order to compensate for the out of square situation, so a tape installation will work much better to provide the seal.  My location is in Texas if that is important.

Applying a coating or paint that is UV resistant to the tape seems the obvious solution, but adhesion to the surface is what I am concerned about.  Does anyone have any experience and can you suggest what has worked for you?  I know that, for example, when applying fluid flash over Zip tape they recommend to use acetone first which I assume helps with bonding and this may apply to other tape systems as well, but will this allow for the adhesion of paint as well?  Should I consider adding an intermediate substrate like maybe a spray bedliner product or god forbid something like Flex-seal and then paint?  Thanks in advance for your thoughts and responses.