Works on almost every surface just make the right nozzle selection. It doesn't make a lot of noise. Cleaned windows on second floor very good power. I use it to clean my car the patio,gutters,mold on bricks love this machine.
Good design and very effective. Worth the extra money in more durable hardware, connectors, etc. Soap containers are a little small to do house cleaning. Needs a more effective method of draining as not everyone in Minnesota has a heated garage to store the pump over the winter months.