condensation on new double glazed windows...
 

We got new upvc double glazed windows fitted to the front of our house this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we contact
the DG company..

I did google a bit on this but most posts referred to moisture condensation
between the panes which is not what we are experiencing.

--dkh

condensation on new double glazed windows...
 

On Sat, 08 Oct 2005 10:19:55 GMT, dkh wrote:

We got new upvc double glazed windows fitted to the front of our house this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we contact
the DG company..

I did google a bit on this but most posts referred to moisture condensation
between the panes which is not what we are experiencing.

Some condensation on DG is to be expected. To eliminate it completely, you
would need better insulation around the frame (it's conduction through that
which leads to the glass getting cold enough for moist air to condense out).
I think some makes are better than others in this respect.

I've also had a couple of DG windows fitted this summer. On the first cold
night, I was alarmed to see condensation along the bottom of each panel,
which wasn't on the inside. I was pondering the likelihood of both units
having failed so soon, when it occurred to me to open a window and stick my
hand out. The moisture was on the outside (as it often is on your car
windows). The DG unit was obviously allowing the outer pane to get very
cold.

--
Honk if you've slept with Commander Riker!

condensation on new double glazed windows...
 

"dkh" wrote in message
...
We got new upvc double glazed windows fitted to the front of our house
this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each
pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we contact
the DG company..

I did google a bit on this but most posts referred to moisture
condensation
between the panes which is not what we are experiencing.

Condensation forms, of course, when damp humid air comes into contact with a
cold surface. If the inner pane of your double glazing is cold, and humid
air contacts it, then you will get condensation. The condensation will be
exacerbated by lack of ventilation.

So a few questions to ask:
Why is the inner pane cold, where is the damp air coming from, and is there
any ventilation in your bedroom (eg an open window)?
If your house is cold - then the inner pane will be cold. If you keep all
the windows closed (and your bedroom door closed) then there is a lack of
ventilation. Certainly there is a lot of moisture in exhaled breath - but is
your house damp as well? Do you have, for example, a tumble drier that
vents into the house rather than through an outside wall? Did the window
fitters have to do any re-plastering that is now drying out?
I have double glazing and occasionally, if the weather is very cold, there
is a small amount of condensation on bedroom windows in the morning (right
at the bottom) - at this time of year, however, none at all.

Kev

condensation on new double glazed windows...
 

dkh wrote:

We got new upvc double glazed windows fitted to the front of our house this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we contact
the DG company..

I did google a bit on this but most posts referred to moisture condensation
between the panes which is not what we are experiencing.

--dkh


Even DG is not a perfect insulator. Its just BETTER.

Sounds like you have a very humid room - try a little ventilation in it.

condensation on new double glazed windows...
 

dkh wrote:
We got new upvc double glazed windows fitted to the front of our
house this week.

My wife is convinced that all our condensations problems on windows
would disappear (we had pretty bad condensation on the old single
pane sash windows)

However this morning we noticed that the windows in our bedroom were
a bit (not enough to need wiped down) steamed up (say bottom 15-20%
of each pane)

There was no condensation on any other of the new windows but there
was a bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we
contact the DG company..

Buy a dehumidifier, problem sorted without opening windows and letting
cold air in.

condensation on new double glazed windows...
 

In article ,
"borgmaster" writes:
Buy a dehumidifier, problem sorted without opening windows and letting
cold air in.

But you haven't said how to repair the resulting dished
floorboards, plaster which has come away from shrunk laths,
etc. Far better to ventilate the house properly.

--
Andrew Gabriel

condensation on new double glazed windows...
 

On 08 Oct 2005 16:29:58 GMT, (Andrew Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

--
Dave Fawthrop dave hyphenologist co uk
The London suicide bombers killed innocent commuters.
Animal rights terrorists and activists kill innocent patients.

condensation on new double glazed windows...
 

In message , Dave Fawthrop
writes
On 08 Oct 2005 16:29:58 GMT, (Andrew Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

Well yes and no. Houses need ventilation, it's more a question of
getting the right amount of ventilation in the right places.
--
Chris French

condensation on new double glazed windows...
 

chris French wrote:
In message , Dave Fawthrop
writes
On 08 Oct 2005 16:29:58 GMT, (Andrew Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

Well yes and no. Houses need ventilation, it's more a question of
getting the right amount of ventilation in the right places.

Naah.
Go closed cycle.
Just electrolyse the output from the dehumidifier, add lots of plants and
light, a charcoal scrubber, and you're golden.

condensation on new double glazed windows...
 

"Dave Fawthrop" wrote in message
...
On 08 Oct 2005 16:29:58 GMT, (Andrew Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

I always wake up with a headache if I don't have a window open!

Kev

condensation on new double glazed windows...
 

"Uno Hoo!" wrote in message
...

"Dave Fawthrop" wrote in message
...
On 08 Oct 2005 16:29:58 GMT, (Andrew
Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and
letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

I always wake up with a headache if I don't have a window open!



Check fo CO ( carbon monoxide ) as soon as possible.

condensation on new double glazed windows...
 

On Sat, 8 Oct 2005 21:52:48 +0100, chris French
wrote:

| In message , Dave Fawthrop
| writes
| On 08 Oct 2005 16:29:58 GMT, (Andrew Gabriel)
| wrote:
|
| | In article ,
| | "borgmaster" writes:
| | Buy a dehumidifier, problem sorted without opening windows and letting
| | cold air in.
| |
| | But you haven't said how to repair the resulting dished
| | floorboards, plaster which has come away from shrunk laths,
| | etc. Far better to ventilate the house properly.
|
| But ventilation costs money to heat up the cold incoming air.
| Best to reduce ventilation as far as practicable.
|
| Well yes and no. Houses need ventilation, it's more a question of
| getting the right amount of ventilation in the right places.

Yep 2 square inches in the kitchen and bathroom, plus a catflap in the
hall, plus a tiny amount between the old sill and new sill of out double
glassed windows (which I deliberately leave there) plus 9sq inches for the
old central heating boiler (soon to go) works fine for us. But we do not
smoke.

--
Dave Fawthrop dave hyphenologist co uk
The London suicide bombers killed innocent commuters.
Animal rights terrorists and activists kill innocent patients.

condensation on new double glazed windows...
 

in 455511 20051008 172958 (Andrew Gabriel) wrote:
In article ,
"borgmaster" writes:
Buy a dehumidifier, problem sorted without opening windows and letting
cold air in.

But you haven't said how to repair the resulting dished
floorboards, plaster which has come away from shrunk laths,
etc. Far better to ventilate the house properly.

I've run a dehumidifier for the last 15 winters with no ill-effects.
We had awful condensation problems before that, but none now.

condensation on new double glazed windows...
 

If you want de-humidifying the best thing is single glazed sash
windows. They condense a lot which then drains down and out to the
outside via the gap at meeting rails and at the bottom sash staff bead
junction.
Double glazed and draught proof windows keep humidity in and although
there may be slightly less codensation on the window glass itself (it
being warmer than a single glazed window) there will be more
condensation in other parts of the buildng sometimes resulting in damp
walls, mould patches etc. If there is inadequate ventilation there will
be more condensation on the DG windows than you would have had with SG
windows, due to the higher humidity levels.
One (stupid) answer to this prob is 'the de-humidifier' - an item which
was virtually never heard of until double glazing and it's probs
emerged. A more sensible answer is to open the windows a bit, and keep
a window-leather and bucket handy to wipe off condensation.

cheers

Jacob

condensation on new double glazed windows...
 

"Steve" wrote in message
...

"Uno Hoo!" wrote in message
...

"Dave Fawthrop" wrote in message
...
On 08 Oct 2005 16:29:58 GMT, (Andrew
Gabriel)
wrote:

| In article ,
| "borgmaster" writes:
| Buy a dehumidifier, problem sorted without opening windows and
letting
| cold air in.
|
| But you haven't said how to repair the resulting dished
| floorboards, plaster which has come away from shrunk laths,
| etc. Far better to ventilate the house properly.

But ventilation costs money to heat up the cold incoming air.
Best to reduce ventilation as far as practicable.

I always wake up with a headache if I don't have a window open!



Check fo CO ( carbon monoxide ) as soon as possible.

Doesn't matter where I am - in a hotel or staying with relatives. If the
bedroom window is not opened to let fresh air in then I wake up with a
headache.

Kev

condensation on new double glazed windows...
 

In message . com,
writes
If there is inadequate ventilation there will
be more condensation on the DG windows than you would have had with SG
windows, due to the higher humidity levels.

Even when we replaced our old draughty wooden windows (they had louvre
vents that wre very draughty...) with UPVC DG we didn't get more
condensation. A little bits sometimes, esp. on the bedroom windows, but
nothing worth wiping off, certainly it never pooled at the bottom like
before.

I guess replacing all the windows, doors etc. and other gaps could leave
a house with a ventilation problem.

One (stupid) answer to this prob is 'the de-humidifier' - an item which
was virtually never heard of until double glazing and it's probs
emerged. A more sensible answer is to open the windows a bit, and keep
a window-leather and bucket handy to wipe off condensation.

But yes I agree proper ventilation is important. Other than humans (and
their pets) kitchens and bathrooms are the main sources. and extractor
hood/fan in the kitchen deals with that, as does one in the bathroom.
Our humidistat operated one worked well.
--
Chris French

condensation on new double glazed windows...
 

Bob Martin wrote:
in 455511 20051008 172958 (Andrew
Gabriel) wrote:
In article ,
"borgmaster" writes:
Buy a dehumidifier, problem sorted without opening windows and
letting cold air in.

But you haven't said how to repair the resulting dished
floorboards, plaster which has come away from shrunk laths,
etc. Far better to ventilate the house properly.

I've run a dehumidifier for the last 15 winters with no ill-effects.
We had awful condensation problems before that, but none now.

You must have bought a dehumidifier the same time as me Bob. I to have
had over 15 years of condensation free winters with no ill effect to the
fabric or structure of my property. Added benefit is that the water
produced can be used in steam irons without the iron scaling up. I
wonder if anyone who suggests that dehumidifiers can cause the problems
they say have empirical evidence to proof their comments.

condensation on new double glazed windows...
 

wrote in message ...
On 9 Oct,
"borgmaster" wrote:


You must have bought a dehumidifier the same time as me Bob. I to have
had over 15 years of condensation free winters with no ill effect to the
fabric or structure of my property. Added benefit is that the water
produced can be used in steam irons without the iron scaling up. I
wonder if anyone who suggests that dehumidifiers can cause the problems
they say have empirical evidence to proof their comments.

That echoes my experiance. They aren't cheap to run though, and mine can
only
cope with 4 people in residence. any more and it's on continuously.

It's saved quite a bit on paint for window frames too. As a result I've
still
got one or two wooden ones, and one even single glazed - although that ips
planned to be replaced.

It was bought originally after an attack of mould on an outside wall.
There's
been no sign of mould since.

My goodness - it dries the outside of the house as well? ;-)

Kev

condensation on new double glazed windows...
 

In synonypis then ... it would appear that i dont have much to worry
about...

Ive spoken to a work colleague who experiences the same and he claims
the airflow around the base of the panes is not as good leading to small
levels of condensation.

--
dkh

condensation on new double glazed windows...
 

On Sat, 08 Oct 2005 11:59:45 +0100, John Laird
wrote:

On Sat, 08 Oct 2005 10:19:55 GMT, dkh wrote:

We got new upvc double glazed windows fitted to the front of our house this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).



Some condensation on DG is to be expected. To eliminate it completely, you
would need better insulation around the frame (it's conduction through that
which leads to the glass getting cold enough for moist air to condense out).
I think some makes are better than others in this respect.

I think John has the answer here, we are on our 4th home in 3 years,
the last one was a bungalow with cheap DG, on cold mornings the
windows had condensation around the lower parts of the window pane and
frame. Our current house has a much higher quality DG, thicker
chunkier frames, these show no condensation at all.

Humidity gauge shows the same levels of humidity in both properties.

Paul

condensation on new double glazed windows...
 

Uno Hoo! wrote:


I always wake up with a headache if I don't have a window open!

I usually wake up with one if I do...