It's better to use an AirLess sprayer. It's a bit more expensive, but less frustration and time. I bought a Graco A30 in Hornbach for around 5000 sek, but I saw a Meek equivalent in Jula for 2500 sek. I painted a 300m² roof in one day using the Skylift. To spray from the lift basket, you'd need a gun extension (tube), preferably 30 cm long (no problem with paint dripping from the nozzle). One note: the paint itself may be the problem. I remember that on other small roofs painted with a brush, if the paint didn't have time to dry completely before nightfall, condensation caused permanent white spots on the fresh coat, requiring re-application. The manufacturer claimed the paint was fine, but I disagree.