Fitting or not fitting cills to ali doors and window
Anonymous user 09/03/2024 - 3.13 PM
I have recently had bi-folding doors and a window fitted to my timber garden office. The fitters fit them from the inside and behind the timber cladding trim that I had previously fit, which has set the doors and window back. Because of this I have been told that the 150mm cill couldn’t fit under the frame as the drip edge didn’t reach out past the ledge and therefore they have left me with the cills lying in the garden and told me to rip the backs off them and glue them upto the front of the frame bottom. I am concerned about moisture and water ingress if/when the mastic eventually fails. Surely it would have been easy for them to just un-pin the timber door trims and fit the frames further out to the edge so that the cills could have been installed under the frames and then rip the timber trim. I’m arguing with the fitters now who have left the site but I need some technical support as to why their proposed method shouldn’t be done.
Are you a tradesperson and able to answer this question?
Hi there you are quite right the Coll’s must be installed as the windows have drainage holes underneath which drain into the Cills and then out of the drip edge of the cills. Basically without the cills the windows will drain into the building hope this helps
I like the previous tradesman answer but feel it doesn’t go far enough. The installation is poorly completed. There are ways that proper tradesman can deal with most mismeaures which this patently is. Not right to put the onus on the client who has contracted in good faith.
Answered13 September 2020
1
Anonymous user
This is incorrect, if this was the correct method then they should have done this not leave it for the customer
It suggests the incorrect sills were called up at survey stage and / or the Cladding should have been removed prior to installation
Suggest a return vist to rectify this
Answered18 August 2020
0
Anonymous user
Not sure if you bought windows yourself and got someone to fit? Or you got a proper installer to supply and fit?
If it was option 1) then who every surveyed them got it wrong? And should have used a 180 or 200 cill. This is why I never fit windows someone else has surveyed and bought in, as it’s not worth the Afro if there’s a problem.
If it was option 2 then it’s down to window company to sort, as they surveyed them wrong, and you should pay the balance till they sort it
Answered18 August 2020
0
Anonymous user
Cills help with drain age these have been measured wrong over all measure is cill bottom to top of frame for me these have been measured wrong THATS why cill wont fit
