Out of date
The installers are always tidy. The reason for 3 stars is they are still using out of date 'lick your finger to make it wet then put it directly onto the silicone' I'm not sure anyone has told them there are hundreds of thousands of germs in your mouth which you've just put in my silicone to live in my house forever and no amount of disfectant will get that out. So within a couple of weeks it looks dirty and no amount of cleaning will sort this. My husband uses silicone all the time in his job he never puts his fingers near his mouth to moisten the silicone. He uses sprays. Much more hygienic. And the first team put my cat flap back in wonky. So someone else had to come out and correct this. Otherwise we are happy with the windows this side of things are good.