Flush casement windows - the drainage hole cover is flush to the trim (sits on stone sill).
Anonymous user 16/03/2024 - 2.43 PM
Hello,
We have had flush casement windows installed - all sitting on stone lintels (no stub sills). My problem is the front drainage hole caps are flush to the trims they have fit externally. Will this lead to a backup of water in the frame profile and cause problems? Will this install invalidate the manufacturers 10 year guarantee? Also internally, the frames look to be sat too low - if that makes sense? It looks unsightly, as the exposed frame at the top and sides is bigger, and for windows with bottom openers, there's not much room to get your hand around the handle.
Thanks, Louise.
Are you a tradesperson and able to answer this question?
Hi Louise, I’m not one to criticise somebody else’s work....especially without seeing it but sounds like the windows haven’t been measured exactly how u would have liked regarding equal frame internally. ie if the size of the frames was reduced in height, it would of allowed more frame on the bottom and more drainage exposed. As for the drainage holes as long as they are not covered completely the little bit of water that does come from them should still find it’s way out. Hope this help.
Hi LOUISE.
YES your windows were made over size.
what i would have done is reduce your windows by 30mm and add stub cills.
They are a shorter cill. You put a line of sealant down on the bed of your brick work and you set the cill down followed a line of silicone on to of the cill and you fit the frame on top of the cill.
Answered31 July 2021
1
Anonymous user
I have in the past made a large outer frame for the bottom, depending on the plaster line, and how old the house is but generally I totally agree with the previous answer,
Hi Louise, unfortunately if stub cills are not used or an add on not applied to the bottom of a window then drainage holes can be very close to the bottom of the frame. if the windows are white then the best sealant to seal the trim to the frame would be a gap filler also known as stelmax, this should ensure the seal doesn't break down overtime and let water in. if the drain hole is not completely blocked it should allow water to still drain. unfortunately windows in most instances are measure to fit brick to brick externally minus 10mm so will not give you a consistent gap inside unless the plaster line follows the window
