One of the fixed units on Double glazed window has failed and has condensation internally. Fitted professionally 16 years ago. I Removed internal beading and found window fitters never used any packers. Removed sealed unit from double sided glazing tape and it appears there are no drain holes. Is this correct? Is the double sided glazing tape supposed to keep all of the water from entering which would indicate why there are no drain holes. Window openers either side do have drain holes.
So the glazing tape on the external side of the unit is the only thing that stops water from getting in and causing damage to the unit again. When I took the unit out of the frame it was stuck to glazing rape so this will need replacing.
Hi mill2000 Glazing tape is normally used where external beading is fitted. If your DGU is manufactured to a good standard it may last 10+ years so you have been lucky. They are sealed units so there should not be water ingress until the seal fails. Regards S
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!