The Cat 5, which comes in large buckets, was applied to the exterior walls in a single day, using paint rollers (it was not applied to the roof because roofs us underpayment that is more durable for asphalt shingles, metal standing seam, or roof tiles). The material should be applied heavily, leaving the finished coat thick and consistent, with no OSB, joint and seam filler, or FastFlash visible. In our first application, the material had not been copious enough in some places and had to be covered with a second coat two days later once the first coat had dried.
The material must be mixed well before each use, and a tarp should be laid under all edges where applied, as it drips heavily while it dries. We found that our paint rollers had to be thrown out after each use, so an optimized work flow is encouraged, rather than a piecemeal one. Special care should be taken to protect your hands and body: wear long sleeves, pants, and latex gloves but keep in mind that they can ruin clothes and stain your skin temporarily.
Overall, we are exceedingly satisfied with this product in terms of ease of application, functionality, and aesthetic. An added advantage that we had not anticipated was the product's behavior as a natural binding agent for the exterior sheathing, further reinforcing the rigidity of the tiny home.