Converting Polysurface to a Solid Surface

That surface could be a SUBD. but for patterns, especially accurate patterns that are use on Architecture, Using Surface UV for spacing is not a great technique. Part of the reason is not all shapes can be represented by one surface. Even if the surface might be the right shape the UV spacing is not too accurate.

NURBS surfaces want to be 4 edges. The shape shown there would be difficult to find 4 edges.

A much more flexible and accurate paneling technique would be to use paneling tools;

Here is an example:

And here are more posts that explore this: