Do you english still install timber windows in the outside leaf ? .....

On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

--
Colin Bignell

"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

Colin Bignell

because due to the wet climate the Scots have never done it ........

On 09/05/2015 17:37, Jim GM4DHJ in the trailer park ... wrote:
"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

Colin Bignell

because due to the wet climate the Scots have never done it ........

Generally Scottish crofts have solid walls, so all their windows are in
the outer leaf, as there is no other.

--
Colin Bignell

"Jim GM4DHJ in the trailer park ..." wrote
in message ...
Do you english still install timber windows in the outside leaf ? .....


Yes but only in posh houses.

Most windows now are uPVC.
New and replacement.
And doors.

Jim GM4DHJ wrote:
"Nightjar wrote i
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....
So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?
because due to the wet climate the Scots have never done it ........

Can we say "********" children ?

"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 17:37, Jim GM4DHJ in the trailer park ... wrote:
"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

Colin Bignell

because due to the wet climate the Scots have never done it ........

Generally Scottish crofts have solid walls, so all their windows are in
the outer leaf, as there is no other.


About 1% of Scots live in crofts, the other 99% live in normal dwellings in
towns and cities

On 5/9/2015 8:23 PM, Phil L wrote:
"Nightjar .me.uk" "cpb"@ insert my surname here wrote

Generally Scottish crofts have solid walls, so all their windows are in
the outer leaf, as there is no other.

About 1% of Scots live in crofts, the other 99% live in normal dwellings in
towns and cities

Even in crofting areas, many crofters live in 'normal' houses.

A croft is not a house, it's the land.

"Nightjar.me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

Presumably he knows about the Scots already.

Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....



No, only install PVC or aluminium windows.

On Saturday, 9 May 2015 15:57:47 UTC+1, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....

not often


NT

On 09/05/15 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


very often on quality houses. Almost never on cheap ones


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


No we install glass windows in the outer leaf, mostly sealed unit double
glazing in uPVC or aluminium frames but sometimes in wooden frames
(usually where it is a condition of planning consent)

--- news://freenews.netfront.net/ - complaints: ---

On 09/05/2015 20:23, Phil L wrote:
"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 17:37, Jim GM4DHJ in the trailer park ... wrote:
"Nightjar .me.uk" "cpb"@ insert my surname here wrote in message
...
On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


So, what wrong with the Scots, Welsh and Irish, that you don't want to
know about them?

Colin Bignell

because due to the wet climate the Scots have never done it ........

Generally Scottish crofts have solid walls, so all their windows are in
the outer leaf, as there is no other.


About 1% of Scots live in crofts, the other 99% live in normal dwellings in
towns and cities



Irrelevant to the point being made.

--
Colin Bignell

On 09/05/2015 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....

I haven't seen a wooden window in years. We normally use glass.

Is there some window tax or other reasons why you would fit wood to an
opening, or do you live in a poor region?

On Sun, 10 May 2015 11:10:49 +0100, Fredxxx wrote:

Do you english still install timber windows in the outside leaf ? .....

I haven't seen a wooden window in years. We normally use glass.

Is there some window tax or other reasons why you would fit wood to an
opening, or do you live in a poor region?

Umm, every single window and door in this house, including the four brand
new ones I've fitted to an outbuilding this year, are wooden. They were
more expensive than tupperware, too.

Going back to the original question - none of the walls are cavity,
though, so I can't comment about which leaf they're fitted to here, but
they are all fitted flushish with the outside rather than the inside, as
is normal, so if they were cavity they would be in the outside leaf.

On Sunday, 10 May 2015 08:06:28 UTC+1, The Natural Philosopher wrote:
On 09/05/15 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


very often on quality houses. Almost never on cheap ones

Normally they go in the inner leaf for fire safety reasons


NT

On 10/05/2015 11:52, wrote:
On Sunday, 10 May 2015 08:06:28 UTC+1, The Natural Philosopher wrote:
On 09/05/15 15:57, Jim GM4DHJ in the trailer park ... wrote:
Do you english still install timber windows in the outside leaf ? .....


very often on quality houses. Almost never on cheap ones

Normally they go in the inner leaf for fire safety reasons


NT

Do they?! How does that help fire safety?

My house was built in the 1960's with cavity walls and wooden window
frames in the outer leaf. All the original (single glazed) windows have
been replaced with double glazed units in thermal break aluminium frames
- again fitted in the outer leaf, set back about 40mm from the face of
the brickwork. This then only requires a fairly narrow cill on the
outside but provides a decent cill on the inside which is wide enough to
accommodate flower pots, etc. (or other miscellaneous junk!)
--
Cheers,
Roger
____________
Please reply to Newsgroup. Whilst email address is valid, it is seldom
checked.

"Fredxxx" wrote in message
...
On 10/05/2015 23:09, wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.

On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame, retarding fire spread. Inner leaf windows have been standard for this reason for a very long time. Outer leaf windows tend to be found on very old houses that predate this.


NT

On 10/05/2015 23:09, wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

you will be telling me next th in the past at the Scots shouldn't have cut
off the window horns and should have built them in ....... ......

On 10/05/2015 18:48, harryagain wrote:
"Fredxxx" wrote in message
...
On 10/05/2015 23:09, wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

"Bod" wrote in message
...
On 10/05/2015 18:48, harryagain wrote:
"Fredxxx" wrote in message
...
On 10/05/2015 23:09, wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the cavity
closure rebate .....

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

"harryagain" wrote in message
...

"Fredxxx" wrote in message
...
On 10/05/2015 23:09, wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.

Yes.

Hence the window has to be linked/continuous with to the outer leaf.

Nope. Perfectly possible to have the windows recessed in
the wall and on the inner leaf. No real point in doing that tho.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.

"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber

On 11/05/2015 08:50, Jim GM4DHJ ... wrote:
"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


Oh, ok.

"Jim GM4DHJ ..." wrote in message
...

"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You
would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the
like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have water
appearing inside the house above the window.....

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have water
appearing inside the house above the window.....


Well I've never heard of a double glazed window leaking from above a
window when fitted to the outer leaf.

"Bod" wrote in message
...

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the
outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have
water
appearing inside the house above the window.....


Well I've never heard of a double glazed window leaking from above a
window when fitted to the outer leaf.

seen plenty and asked for plenty to be moved back in line with the cavity
closure when I did letters of comfort .......

On 11/05/2015 09:05, Jim GM4DHJ ... wrote:
"Bod" wrote in message
...

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the
outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have
water
appearing inside the house above the window.....


Well I've never heard of a double glazed window leaking from above a
window when fitted to the outer leaf.

seen plenty and asked for plenty to be moved back in line with the cavity
closure when I did letters of comfort .......


Oh, ok.

On 11/05/2015 08:57, Jim GM4DHJ ... wrote:
"Jim GM4DHJ ..." wrote in message
...

"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You
would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the
like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have water
appearing inside the house above the window.....

Not if done properly:

http://www.manthorpe.co.uk/Building/...ay-System.html

I think have only come across cheapskate builders flouting regulations.

On Monday, 11 May 2015 00:08:01 UTC+1, Fredxxx wrote:
On 10/05/2015 23:09, nt wrote:
On Sunday, 10 May 2015 14:37:09 UTC+1, Roger Mills wrote:
On 10/05/2015 11:52, nt wrote:

Normally they go in the inner leaf for fire safety reasons

Do they?! How does that help fire safety?

Flames licking up the outside take longer to ignite the frame,
retarding fire spread.

Most fires are internal, where there's combustible material. You would
have thought a window on an external leaf would be better?

from where they spread to being external, and set other houses alight. Its not as big an issue these days with a fire service.

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long time.
They generally have wide inner sills and adorn ornaments and the like.

Are you sure you're talking of the UK?

Most houses have recessed windows. Maybe I'm wrong about how they're fixed though.


NT

"Fredxxx" wrote in message
...
On 11/05/2015 08:57, Jim GM4DHJ ... wrote:
"Jim GM4DHJ ..." wrote in message
...

"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You
would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found
on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the
like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the
outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have
water
appearing inside the house above the window.....

Not if done properly:

http://www.manthorpe.co.uk/Building/...ay-System.html

I think have only come across cheapskate builders flouting regulations.

yes but in older houses as I described you can land youself in trouble
.......

"Jim GM4DHJ ..." wrote in message
...

"Fredxxx" wrote in message
...
On 11/05/2015 08:57, Jim GM4DHJ ... wrote:
"Jim GM4DHJ ..." wrote in message
...

"Bod" wrote in message
...

Most fires are internal, where there's combustible material. You
would
have thought a window on an external leaf would be better?

Inner leaf windows have been standard for this
reason for a very long time. Outer leaf windows tend to be found
on
very old houses that predate this.

I haven't seen a house with a window on the inner leaf for a long
time.
They generally have wide inner sills and adorn ornaments and the
like.

Are you sure you're talking of the UK?

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer
leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the
outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have
water
appearing inside the house above the window.....

Not if done properly:

http://www.manthorpe.co.uk/Building/...ay-System.html

I think have only come across cheapskate builders flouting regulations.

yes but in older houses as I described you can land youself in trouble
......


This house built in 1990 does not have a cavity tray above the original
protruding porch and wc which faces SW into the prevailing wind ...just a
lead flashing raggled in ....I thought the ceiling looked damaged when we
moved in in '96 and yes water ****ed in onto the ceiling the first winter we
were here...Used Thompson's silicon seal on the brickwork above the raggle
....lasted about seven years before I had to re-do it....about time I did it
again now ....I blame English facing bricks...in the past scottish houses
were harled to keep out the witter .....

"Bod" wrote in message
...

He's talking drivel.
Windows are to keep the weather out, as is the outer leaf.
Hence the window has to be linked/continuous with to the outer leaf.

Plastic windows are a fire hazard.
The plastic gives off highly toxic fumes in a fire.


Are all of your window frames wooden or Crittal steel then?

mine a quality NorDan windows fitted behind the vertical dpc of the
cavity
closure rebate .....


So they are plastic then, unless you have the aluminium cladding?

no...timber


and if you have a concrete boot lintel (with a normal lintel in the
outside
leaf) with a dpm over the boot lintel coming out in line with the cavity
closure dpc ...if you fit your window in the outside leaf you may have
water
appearing inside the house above the window.....


Well I've never heard of a double glazed window leaking from above a
window when fitted to the outer leaf.

There is a cavity tray above windows to divert any water outside through
weepholes.
http://en.wikipedia.org/wiki/Cavity_wall