Compared to caulk there is more work when using foam clay to fill gaps and seams.
The surface has to be moistened so the clay can adhere better.
The clay has to be kneaded to make it easier to be worked with.
After its applied to the gap or seam, you have to work it with a wet finger to smooth it out and make sure the edges of the clay are blended into the surface. If not there's a chance for it to peel.
Then after curing for a minimum of 24hrs comes the sanding.
