Dee Verma
hi to find your installer go to website insulation-installers.co.uk and click your area and a list will come up of suppliers. they will send some one out to book a survey. be careful of who you pick to do the job-do your home work via the internet if cavity wall is for you and your house. what type is best because there are different types of insulation. it would be best to do your windows first because when frames are removed you do get a spill from the cavity and this will then create air pockets.
