Q how can i have wall insulation installed? Ali was professional from first contact and he was able to schedule an appropriate time to fix the issue as i am not living in the property he took the initiative to take pictures and a video of the finished work. Is your boiler playing up? or is it just time to get a new a rated energy efficitent boiler? then why not give us a call? Used the whole bottle overnight to unblock a slow running bathroom (bath.