How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

[g]

On Jun 30, 2:54*pm, "george (dicegeorge)"
wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

[g]

All other things being equal (which they aren't) I would have thought
that to keep cool in summer you needed bottom panes open on the cool
side of the house and top panes open on the hot side of the house to
allow the hotter air to flow outside. On the other hand, if like me
your sash windows are low down and you have young children, just open
the tops and hope for a draught!

Matt

george (dicegeorge) wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in warm
weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

I thought the idea was to open both top and bottom. Top to vent hot air,
and bottom to admit cooler air.

--
Cheers,

John.

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On 30 June, 14:54, "george (dicegeorge)" wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

Why would you want to open your windows in cold weather?

Tommy wrote:
On 30 June, 14:54, "george (dicegeorge)" wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

Why would you want to open your windows in cold weather?

ventilation, rayburn smoke, smelly socks...

"Tommy" wrote in message
...
On 30 June, 14:54, "george (dicegeorge)"
wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in
warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

The clue is in the fact that hot air rises, so open the top in warm
weather to let out the hot air, and the bottom in winter for
ventilation trapping the warmer air above the opening.

AWEM

On 30 June, 19:08, "Andrew Mawson"
wrote:
"Tommy" wrote in message

...

On 30 June, 14:54, "george (dicegeorge)"
wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in
warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

The clue is in the fact that hot air rises, so open the top in warm
weather to let out the hot air, and the bottom in winter for
ventilation trapping the warmer air above the opening.

AWEM

I've lived in houses with sash windows all my life, I randomly open
top or bottom, and I can't say I've ever noticed it makes one jot of
difference which you choose. I think some overanalysis is going on
here.

Cheers!

Martin

On Jun 30, 7:14*pm, wrote:
On 30 June, 19:08, "Andrew Mawson"



wrote:
"Tommy" wrote in message

....

On 30 June, 14:54, "george (dicegeorge)"
wrote:
How should sash windows be used?

I read somewhere that you open the top of the upstairs ones in
warm weather,
the bottom in cold weather,
or vice versa,
i cant remember which way to keep the house cool in summer,
help please..

The clue is in the fact that hot air rises, so open the top in warm
weather to let out the hot air, and the bottom in winter for
ventilation trapping the warmer air above the opening.

AWEM

I've lived in houses with sash windows all my life, I randomly open
top or bottom, and I can't say I've ever noticed it makes one jot of
difference which you choose. I think some overanalysis is going on
here.

Cheers!

Martin

If you put a thermometer at each location you'll soon know.


NT

wrote:

I've lived in houses with sash windows all my life, I randomly open
top or bottom, and I can't say I've ever noticed it makes one jot of
difference which you choose. I think some overanalysis is going on
here.


Dead right - but for the wrong reason. It's not so much _which_ windows
you open but _when_. Close them, and the curtains, all day, to keep the
heat out; open them at night when the outside is cold to let the cold in.

For sash ones, open top and bottom leaving the glass in the middle for
maximum convective flow. Their strong point being they don't stick out
into the street.

Oh, you probably need to turn your PC off too (500W continuous adds
up!). And worry about burglars.

Andy