I have a condensation problem in my home and it seems that it is down to
poor ventilation as all the windows are double glazed with no vents. So, I
have bought some trickle vents from the company who recently built our
Question is: what is the best way to drill through the steel in the frames.
I have started by marking and drilling a series of holes, but this will take
a very long time! Is there a better drill bit (for Bosch SDS) or better yet
I need a router - will Rotozip do the job?
Thanks in advance for any advice!
Aren't the vents usually an add on part *over* the window frame? They are
on both the window and patio doors I bought from Screwfix. I wouldn't
fancy hacking into the main frame.
Might be easier to simply provide vents through the wall, with 'hit or
*Why is 'abbreviation' such a long word?
Dave Plowman email@example.com London SW 12
Bottom line? Don't do it!
Factory fitted trickle vents are fitted either in the head of the window
(the outer frame) or in the opening sash depending on manufacturing
methods and installation circumstances. Cutting a large hole in the
reinforcement in the head, as noted above, may cause the frame to sag and
you might inadvertently be trying to drill through a frame fixing.
Cutting the sash will weaken it.
If the window is fitted with an espagnolette locking mechanism you could
simply open (and lock it) in the night vent position.
I thought this had only recently become a building regs requirement.
There seem to be plenty of houses with el-cheapo windows where the owner
had turned down the offer to pay extra for vents. Are we sure these
windows have steel in them or they old-fashioned aluminium windows ?.
Don't even think of going near them with a router though, unless you
want to spend time in casualty.
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