Dont use them. Fabulous until they have your money, but as soon as your contract is signed & deposit paid the trouble begins. They sent a newbie installer on their own who stuffed up a lot, we had to advise them & rectify their mistakes each day after they left, having only done a few hours week. Like pulling teeth. The days they were unsupervised, we are still paying for some time later with problems emerging post build that they have refused to rectify despite may communications, each time you recontact them its like its all new to them - placatory or denying. Whenever we walk into our shed we grit our teeth, action likely to soon be commenced.