My mother has two doors in her house with missing or cracked glass.

They are old doors and it appears the rebates are a bit shallow for thick
glass.

Do we in fact need thick glass to be fitted, given that for safety we can
now use laminated, toughened, or film coated glass? To fit thicker glass
would mean replacing the doors.

Does it today need to be thicker to be strong enough not to break under its
own weight or something?

Or are all the safety glasses intrinsically thicker?

My Mother has been told by her usual builder that plain glass is OK thinner
where obscure is not. Is this because it can be thinner for the same
strength? Or is patterend intrinsically thicker?

thanks

"G" wrote in message
...
My mother has two doors in her house with missing or cracked glass.

They are old doors and it appears the rebates are a bit shallow for thick
glass.

Do we in fact need thick glass to be fitted, given that for safety we can
now use laminated, toughened, or film coated glass? To fit thicker glass
would mean replacing the doors.

Does it today need to be thicker to be strong enough not to break under
its own weight or something?

Or are all the safety glasses intrinsically thicker?

My Mother has been told by her usual builder that plain glass is OK
thinner where obscure is not. Is this because it can be thinner for the
same strength? Or is patterend intrinsically thicker?

Having now read more about this, it eappears what we have is old doors with
rebates for 4mm glass. Can I now purchase patterned 4mm glass of a safe kind
(toughened or Laminated or filmed) and use it in these doors. If not
patterned, can I use4mm plain glass of a safety glass kind?

I see Pilkington do make patterned toughened 4.4mm glass, for example. The
question is, is 4/4.1mm thick enough or is it just going to break? The pane
in one door is pretty much the full size of the door minus about a 4" all
round frame. The other door has a dividing bar down the middle, but is full
height.

"G" wrote in message
...

"G" wrote in message
...
My mother has two doors in her house with missing or cracked glass.

They are old doors and it appears the rebates are a bit shallow for
thick
glass.

Do we in fact need thick glass to be fitted, given that for safety we
can
now use laminated, toughened, or film coated glass? To fit thicker glass
would mean replacing the doors.

Does it today need to be thicker to be strong enough not to break under
its own weight or something?

Or are all the safety glasses intrinsically thicker?

My Mother has been told by her usual builder that plain glass is OK
thinner where obscure is not. Is this because it can be thinner for the
same strength? Or is patterend intrinsically thicker?

Having now read more about this, it eappears what we have is old doors
with
rebates for 4mm glass. Can I now purchase patterned 4mm glass of a safe
kind
(toughened or Laminated or filmed) and use it in these doors. If not
patterned, can I use4mm plain glass of a safety glass kind?

I see Pilkington do make patterned toughened 4.4mm glass, for example. The
question is, is 4/4.1mm thick enough or is it just going to break? The
pane
in one door is pretty much the full size of the door minus about a 4" all
round frame. The other door has a dividing bar down the middle, but is
full
height.

http://www.leics.gov.uk/glazing.pdf

for example. (You need Dopey acrobat)

Bob Mannix

http://www.leics.gov.uk/glazing.pdf

for example. (You need Dopey acrobat)

Thanks for your trouble finding that. I did in fact find it on my travels,
and understand I need safety glass.

The Question is: how thick?

There appears to be no safety rule regarding thickness, provided you use
safety glass of some sort.
Will it break under its own weight if I use 4mm toughened glass in a single
door-sized sheet?
Will it break under its own weight if I use 4mm toughened glass in
half-door-width sheets?

I know I can buy 4mm toughened glass, bot plain and patterned.
I suspect I cannot buy 4mm laminated because it would be hard to produce? Is
this true?

In article ,
says...
http://www.leics.gov.uk/glazing.pdf

for example. (You need Dopey acrobat)

Thanks for your trouble finding that. I did in fact find it on my travels,
and understand I need safety glass.

The Question is: how thick?

There appears to be no safety rule regarding thickness, provided you use
safety glass of some sort.
Will it break under its own weight if I use 4mm toughened glass in a single
door-sized sheet?
Will it break under its own weight if I use 4mm toughened glass in
half-door-width sheets?

I know I can buy 4mm toughened glass, bot plain and patterned.
I suspect I cannot buy 4mm laminated because it would be hard to produce? Is
this true?

4mm toughened glass is perfectly acceptable for use in your door.
It is the most commonly used thickness.
4mm laminated (nominally 4.1mm) is a bit thin for a single sheet in a
door. (An area of heavy traffic)

The "Safety" designation is not that toughened glass will not break but
that, IF it does, it will break into tiny pieces which will not seriously
cut rather than into dangerous shards
--
Ziggur

"S'ils te mordent, mords-les"

In article ,
Ziggur wrote:
The "Safety" designation is not that toughened glass will not break but
that, IF it does, it will break into tiny pieces which will not seriously
cut rather than into dangerous shards

However, toughened glass is *vastly* stronger than ordinary (or laminated)
under most circumstances - hence its name.

--
*I'm already visualizing the duct tape over your mouth

Dave Plowman London SW
To e-mail, change noise into sound.

On Wed, 13 Oct 2004 22:16:39 GMT, "G"
wrote:

My mother has two doors in her house with missing or cracked glass.

They are old doors and it appears the rebates are a bit shallow for thick
glass.

Do we in fact need thick glass to be fitted, given that for safety we can
now use laminated, toughened, or film coated glass? To fit thicker glass
would mean replacing the doors.

Does it today need to be thicker to be strong enough not to break under its
own weight or something?


Hi,

What is the door made out of, can the rebates be increased?

Patterned glass has lower average thickness for a given nominal so
must weaker, plus any stress on the pane isn't evened out so much.

How about polycarbonate, or wired glass? Also toughened glass with a
safety film would prevent falling through the door if it broke.

Another factor with all these options is means of escape in a fire.

cheers,
Pete.