A member of the family has just moved into a property which has double glazed sash windows, made from what looks like uPVC.

There appears to be no way to securly lock the lower sash in a partially raised position so as to provide fresh air.

Is there some mechanism that can be attached that will allow one to raise the lower sash to different levels- depending on how much fresh air is required, and then lock it in the selected position?

Yvonne wrote:
A member of the family has just moved into a property which has
double glazed sash windows, made from what looks like uPVC.

There appears to be no way to securly lock the lower sash in a
partially raised position so as to provide fresh air.

Is there some mechanism that can be attached that will allow one to
raise the lower sash to different levels- depending on how much fresh
air is required, and then lock it in the selected position?

A stick?

On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html

alternatively a flexible restrictor like

https://www.locksonline.co.uk/Window...ctor-Lock.html

exact suitability will depend on the window frame and mechanism used.

Owain

On Sunday, 14 August 2016 22:22:30 UTC+1, wrote:
On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html

alternatively a flexible restrictor like

https://www.locksonline.co.uk/Window...ctor-Lock.html

exact suitability will depend on the window frame and mechanism used.

Owain

Owain, just the job! Many thanks for the assistance.

wrote in message
...
On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html


even after watching the video, I still don't get how it works?

Anyone help?

tim

On 17/08/2016 11:09, tim... wrote:

wrote in message
...
On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to
raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html



even after watching the video, I still don't get how it works?

Anyone help?

tim




Its just a spring loaded bolt that sits in the top sash above the bottom
sash and stops either of them sliding past the other until you put the
key in and push the bolt in.
It locks automatically when you close the window.

"tim..." wrote in message
...

wrote in message
...
On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to
raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html


even after watching the video, I still don't get how it works?

Anyone help?

It prevents the sash from being raised past that thing unless the key
is used to allow the sash to be raised higher than that or fully opened.

It doesnt actually 'lock it in the selected position', just prevents the
sash for being opened more than you specify with the location of the lock.

On 14/08/16 21:27, Phil L wrote:
Yvonne wrote:
A member of the family has just moved into a property which has
double glazed sash windows, made from what looks like uPVC.

There appears to be no way to securly lock the lower sash in a
partially raised position so as to provide fresh air.

Is there some mechanism that can be attached that will allow one to
raise the lower sash to different levels- depending on how much fresh
air is required, and then lock it in the selected position?

A stick?


They say this isn't really compatible, but it could work for three
levels by rotating it....

https://d1fvlyhrbsf219.cloudfront.ne...5487_1CCMb.jpg

--
Adrian C

"Rod Speed" wrote in message
...


"tim..." wrote in message
...

wrote in message
...
On Sunday, 14 August 2016 21:05:26 UTC+1, Yvonne wrote:
Is there some mechanism that can be attached that will allow one to
raise
the lower sash to different levels- depending on how much fresh air is
required, and then lock it in the selected position?

https://www.locksonline.co.uk/Window...h-Windows.html


even after watching the video, I still don't get how it works?

Anyone help?

It prevents the sash from being raised past that thing unless the key
is used to allow the sash to be raised higher than that or fully opened.

I got that bit

but I couldn't work out where in the window/frame it fitted

Even assuming that the big lump on the back fits inside somewhere there is
still a 2-3 mm coverplate that protrudes, so wherever it fits there will
have to be a 3-4 mm gap for the window to slid past when you aren't locking
it.

but if they go around leaving 3-4 mm gaps in sash windows there will be
drafts (which I suspect that modern standards try to avoid).

So where is this point in modern sashes where this thing can be installed,
yet it is still possible to slide past when necessary?

And then there's the job of cutting the hole to put it inside. Never tried
it but I suspect that cutting a hole in a uPVC frame to fit this is
non-trivial

tim