My parents received terribly unprofessional service from a Lowes installation contractor. They made initial estimates and quoted prices for windows and door installation. When the contractor started the job they found that there was more work required than initially estimated, which indicates their incompetent ability to evaluate and quote a job correctly. But, when they left to get the extra supplies, they never returned or gave a courtesy call to state when they would be back. They left the windows half torn out without placing something between the gaps to prevent the cold wind from blowing into their house all weekend. Extremely unprofessional. I have never considered having Lowes do anything to my house, but if these are the types of contractors that they use, I am definitely not considering them for my jobs.