We asked Carl to fix a leaking roof on a flat-top (pent) shed. The roof supplied originally had strips of felt nailed down, and the nail holes were starting to leak. He gave us several options, but we took the best he recommended, using fibreglass mat sealed with resin. The result is a vary smart roof, with overhang trim, and no nail holes. He and one helper did the job in one day, very professionally, and cleared up very nicely. I would give this job 5 stars, but feel it was a bit pricey.