Andrei installed a skylight above a run of stairs onto a flat roof with a deck, under Covid conditions. He was cautious about mask protocols, he worked on time, on budget and did a beautiful job. There was very little mess. We had prepared ourselves for drywall dust and typical upheval but there was hardly any disturbance. The deck looks as though the skylight was always there. The ceiling opening itself is very sculptural and we are pleased with the amount of light that floods into the room. We had an issue about one decision that was well resolved and I am glad to have hired Andrei. He is perhaps the best contractor we have had in for work on our house.