Hi all,

New to this site and must say it's great.I am in the process of buying a greenhouse and wondering whats the difference between horticulture glass and toughened glass.Where the greenhouse will be located will be exposed to winds until the garden becomes a bit more mature.Is it better to go for toughened glass for keeping the greenhouse warmer during the winter months?The toughnened glass is £200 extra.Any advice welcome on this

Thanks

Barry

"Barry75" wrote
New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass.Where the greenhouse will be located will be
exposed to winds until the garden becomes a bit more mature.Is it
better to go for toughened glass for keeping the greenhouse warmer
during the winter months?The toughnened glass is £200 extra.Any advice
welcome on this


Welcome to this Newsgroup Barry, which I see you access via GB instead of
direct, lots of knowledgeable people on here.
Toughened glass will not keep the heat in any more than normal glass it's
just safer as it breaks like an old windscreen into small square chunks
instead of sharp nasty shards.
To keep the heat in you will need to use a layer of bubble wrap inside the
glass or you could go for acrylic glazing instead of glass but that is
costly and has other drawbacks.
The necessity of keeping the warmth in depends on what you intend to grow,
so if you let us know that we could, maybe, be more helpful.
--
Regards
Bob Hobden

In article ,
says...

Hi all,

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass.Where the greenhouse will be located will be
exposed to winds until the garden becomes a bit more mature.Is it
better to go for toughened glass for keeping the greenhouse warmer
during the winter months?The toughnened glass is £200 extra.Any advice
welcome on this

Thanks

Barry





Toughned glass is stronger and safer but for the same thickness has no
better heat retaining propeties than standard horticultural glass (which
is normally 3mm thick as compared with the minimum for small house
windows of 4mm) AS Bob has said bubble wrap is the stuff to
insulate with the plastic clips you use to put it up are cheap and
reusable. Since the glass forms the main strength of a small greenhouse
if you are in a windy or exposed place the toughned glass would be better
(also better where children and pets are concerned) Having said all that
I use 3mm horticultral glass in all my greenhouses and so far all animals
and children have resisted the urge to throw them selves through! and I
do not get too much wind damage maybe 4 panes a year across 6 greenhouses
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea

Ordinary greenhouse glass is extremely thin and the slightest chip or crack can end up with you losing lots of it in a gale. Toughened glass will reduce light levels by a small amount, but not as much as you'd lose with polycarbonate sheets. I don't think, altho someone may correct me, that it will affect temps in the GH in the winter. If you can afford it I'd go with the toughened glass.

"Charlie Pridham" wrote in message
T...
In article ,
says...

Hi all,

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass.Where the greenhouse will be located will be
exposed to winds until the garden becomes a bit more mature.Is it
better to go for toughened glass for keeping the greenhouse warmer
during the winter months?The toughnened glass is £200 extra.Any advice
welcome on this

Toughned glass is stronger and safer but for the same thickness has no
better heat retaining propeties than standard horticultural glass (which
is normally 3mm thick as compared with the minimum for small house
windows of 4mm) AS Bob has said bubble wrap is the stuff to
insulate with the plastic clips you use to put it up are cheap and
reusable. Since the glass forms the main strength of a small greenhouse
if you are in a windy or exposed place the toughned glass would be better
(also better where children and pets are concerned) Having said all that
I use 3mm horticultral glass in all my greenhouses and so far all animals
and children have resisted the urge to throw them selves through! and I
do not get too much wind damage maybe 4 panes a year across 6 greenhouses
--

Does anybody else find that bubble wrap is a real pain to install? For my 7'
x 7' greenhouse it takes a day's work every second year, and the bubble
wrap, which I buy in huge rolls, never overlaps enough, (just 1 cm wider
would do), so, as well as the plastic clips, I have to use yards/metres of
Duck Tape to get around the angles where the roof meets the walls and where
the edges of the bubble wrap don't quite meet. The clips work fine but
there are bits of the greenhouse where they can't be used. There must be a
better way. Can one buy the sort of double-glazed skin that the Eden
Project uses, I wonder.

someone

I suppose you could make up a set of wooden frames to fix the bubblewrap to.

On 31 Dec 2008, 18:02, "someone" wrote:
"Charlie Pridham" wrote in message

T...
In article ,
says...



Hi all,

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass.Where the greenhouse will be located will be
exposed to winds until the garden becomes a bit more mature.Is it
better to go for toughened glass for keeping the greenhouse warmer
during the winter months?The toughnened glass is £200 extra.Any advice
welcome on this

Toughned glass is stronger and safer but for the same thickness has no
better heat retaining propeties than standard horticultural glass (which
is normally 3mm thick as compared with the minimum for small house
windows of 4mm) AS Bob has said bubble wrap is the stuff to
insulate with the plastic clips you use to put it up are cheap and
reusable. Since the glass forms the main strength of a small greenhouse
if you are in a windy or exposed place the toughned glass would be better
(also better where children and pets are concerned) Having said all that
I use 3mm horticultral glass in all my greenhouses and so far all animals
and children have resisted the urge to throw them selves through! and I
do not get too much wind damage maybe 4 panes a year across 6 greenhouses

--

Does anybody else find that bubble wrap is a real pain to install? For my 7'
x 7' greenhouse it takes a day's work every second year, and the bubble
wrap, which I buy in huge rolls, never overlaps enough, (just 1 cm wider
would do), so, as well as the plastic clips, I have to use yards/metres of
Duck Tape to get around the angles where the roof meets the walls and where
the edges of the bubble wrap don't quite meet. *The clips work fine but
there are bits of the greenhouse where they can't be used. *There must be a
better way. *Can one buy the sort of double-glazed skin that the Eden
Project uses, I wonder.

someone

You can buy clear tape that is used on Polytunnels from good
Horticultural suppliers. It is very tough, sticky and expensive.

You shouldnt have to replace the bubble wrap every two years. Mine
lasts far longer than that. I did use some bubble wrap that is used
for packaging and that became brittle after two years. Try
Horticultural Bubble Wrap which has more UV resistance? More expensive
but you gets what you pay for.

Bookworm wrote:
On 31 Dec 2008, 18:02, "someone" wrote:
"Charlie Pridham" wrote in message

T...
In article ,
says...




Does anybody else find that bubble wrap is a real pain to install? For my 7'
x 7' greenhouse it takes a day's work every second year, and the bubble
wrap, which I buy in huge rolls, never overlaps enough, (just 1 cm wider
would do), so, as well as the plastic clips, I have to use yards/metres of
Duck Tape to get around the angles where the roof meets the walls and where
the edges of the bubble wrap don't quite meet. The clips work fine but
there are bits of the greenhouse where they can't be used. There must be a
better way. Can one buy the sort of double-glazed skin that the Eden
Project uses, I wonder.

someone

You can buy clear tape that is used on Polytunnels from good
Horticultural suppliers. It is very tough, sticky and expensive.

You shouldnt have to replace the bubble wrap every two years. Mine
lasts far longer than that. I did use some bubble wrap that is used
for packaging and that became brittle after two years. Try
Horticultural Bubble Wrap which has more UV resistance? More expensive
but you gets what you pay for.

Is this all assuming that the bubble wrap stays up all year ? Is it
worth taking down in Spring to maximise light levels or not worth the
bother ?

Paul


--
CTC Right to Ride Rep. for Richmond upon Thames

Barry75 wrote:

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass

Are any of you using the various double/triple wall polycarbonate glazing
options? Mind you, I'm in the northeastern American colonies, and winters
are a bit colder, assuming I want to at least grow hardy greens year round.
I'm currently using a cheapo tubing frame/plastic cover house, perhaps 8 by
6 feet, and the R-factor is, if anything, negative! There's a bok choi
hanging on somehow, but not growing at this point.


Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic
Zone 5/6 in upstate New York, 1420' elevation. NY WO G

In article ,
says...
Bookworm wrote:
On 31 Dec 2008, 18:02, "someone" wrote:
"Charlie Pridham" wrote in message

T...
In article ,
says...




Does anybody else find that bubble wrap is a real pain to install? For my 7'
x 7' greenhouse it takes a day's work every second year, and the bubble
wrap, which I buy in huge rolls, never overlaps enough, (just 1 cm wider
would do), so, as well as the plastic clips, I have to use yards/metres of
Duck Tape to get around the angles where the roof meets the walls and where
the edges of the bubble wrap don't quite meet. The clips work fine but
there are bits of the greenhouse where they can't be used. There must be a
better way. Can one buy the sort of double-glazed skin that the Eden
Project uses, I wonder.

someone

You can buy clear tape that is used on Polytunnels from good
Horticultural suppliers. It is very tough, sticky and expensive.

You shouldnt have to replace the bubble wrap every two years. Mine
lasts far longer than that. I did use some bubble wrap that is used
for packaging and that became brittle after two years. Try
Horticultural Bubble Wrap which has more UV resistance? More expensive
but you gets what you pay for.

Is this all assuming that the bubble wrap stays up all year ? Is it
worth taking down in Spring to maximise light levels or not worth the
bother ?

Paul



I find there is more than enough light in summer for it to stay up and it
has a diffusing effect on the sun and helps prevent scorch I don't use
shading on the outside of my greenhouses
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea

"Gary Woods" wrote after...
Barry75 wrote:

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass

Are any of you using the various double/triple wall polycarbonate glazing
options? Mind you, I'm in the northeastern American colonies, and winters
are a bit colder, assuming I want to at least grow hardy greens year
round.
I'm currently using a cheapo tubing frame/plastic cover house, perhaps 8
by
6 feet, and the R-factor is, if anything, negative! There's a bok choi
hanging on somehow, but not growing at this point.

Our little self built greenhouse has a twin walled polycarbonate roof.
Doesn't seem to bother the plants, some do grow a bit leggy but that's more
likely because it's on the N. side of our garage, overshadowed by a good
sized Camellia tree, and very crowded in there.

--
Regards
Bob Hobden

"Bookworm" wrote in message
...
On 31 Dec 2008, 18:02, "someone" wrote:
"Charlie Pridham" wrote in message

T...
In article ,
says...



Hi all,

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass.Where the greenhouse will be located will be
exposed to winds until the garden becomes a bit more mature.Is it
better to go for toughened glass for keeping the greenhouse warmer
during the winter months?The toughnened glass is £200 extra.Any advice
welcome on this

Toughned glass is stronger and safer but for the same thickness has no
better heat retaining propeties than standard horticultural glass (which
is normally 3mm thick as compared with the minimum for small house
windows of 4mm) AS Bob has said bubble wrap is the stuff to
insulate with the plastic clips you use to put it up are cheap and
reusable. Since the glass forms the main strength of a small greenhouse
if you are in a windy or exposed place the toughned glass would be better
(also better where children and pets are concerned) Having said all that
I use 3mm horticultral glass in all my greenhouses and so far all animals
and children have resisted the urge to throw them selves through! and I
do not get too much wind damage maybe 4 panes a year across 6 greenhouses

--

Does anybody else find that bubble wrap is a real pain to install? For my
7'
x 7' greenhouse it takes a day's work every second year, and the bubble
wrap, which I buy in huge rolls, never overlaps enough, (just 1 cm wider
would do), so, as well as the plastic clips, I have to use yards/metres of
Duck Tape to get around the angles where the roof meets the walls and
where
the edges of the bubble wrap don't quite meet. The clips work fine but
there are bits of the greenhouse where they can't be used. There must be a
better way. Can one buy the sort of double-glazed skin that the Eden
Project uses, I wonder.

someone

You can buy clear tape that is used on Polytunnels from good
Horticultural suppliers. It is very tough, sticky and expensive.

You shouldnt have to replace the bubble wrap every two years. Mine
lasts far longer than that. I did use some bubble wrap that is used
for packaging and that became brittle after two years. Try
Horticultural Bubble Wrap which has more UV resistance? More expensive
but you gets what you pay for.

Thanks for your reply, you're right I am using packaging bubble wrap. I'll
have a look for the horticultural kind next time I change the bubble wrap,
and also for the horticultural tape. It would be worth it if I didn't have
to replace it so frequently.

I'm green with envy at Gary Woods' option of using double or triple
polycarbonate glazing, AFAIK it doesn't seem to come with the standard
purchased greenhouse.

someone

On Thu, 1 Jan 2009 17:51:08 -0000, "Bob Hobden"
wrote:


"Gary Woods" wrote after...
Barry75 wrote:

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass

Are any of you using the various double/triple wall polycarbonate glazing
options? Mind you, I'm in the northeastern American colonies, and winters
are a bit colder, assuming I want to at least grow hardy greens year
round.
I'm currently using a cheapo tubing frame/plastic cover house, perhaps 8
by
6 feet, and the R-factor is, if anything, negative! There's a bok choi
hanging on somehow, but not growing at this point.

Our little self built greenhouse has a twin walled polycarbonate roof.
Doesn't seem to bother the plants, some do grow a bit leggy but that's more
likely because it's on the N. side of our garage, overshadowed by a good
sized Camellia tree, and very crowded in there.

Our greenhouse has double wall polycarbonate sheets from Screwfix. It
isn't cheap but is very effective and unbreakable.

"Fuschia" wrote in message
...
On Thu, 1 Jan 2009 17:51:08 -0000, "Bob Hobden"
wrote:


"Gary Woods" wrote after...
Barry75 wrote:

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass

Are any of you using the various double/triple wall polycarbonate
glazing
options? Mind you, I'm in the northeastern American colonies, and
winters
are a bit colder, assuming I want to at least grow hardy greens year
round.
I'm currently using a cheapo tubing frame/plastic cover house, perhaps 8
by
6 feet, and the R-factor is, if anything, negative! There's a bok choi
hanging on somehow, but not growing at this point.

Our little self built greenhouse has a twin walled polycarbonate roof.
Doesn't seem to bother the plants, some do grow a bit leggy but that's
more
likely because it's on the N. side of our garage, overshadowed by a good
sized Camellia tree, and very crowded in there.

Our greenhouse has double wall polycarbonate sheets from Screwfix. It
isn't cheap but is very effective and unbreakable.

Wow, we have a Screwfix on a trading estate in our town. I'll go and have a
look, although it depends if it fits our elderly greenhouse. Thanks for the
tip.

someone

On Jan 4, 7:45*pm, "someone" wrote:
"Fuschia" wrote in message

...



On Thu, 1 Jan 2009 17:51:08 -0000, "Bob Hobden"
wrote:

"Gary Woods" wrote after...
Barry75 *wrote:

New to this site and must say it's great.I am in the process of buying
a greenhouse and wondering whats the difference between horticulture
glass and toughened glass

Are any of you using the various double/triple wall polycarbonate
glazing
options? *Mind you, I'm in the northeastern American colonies, and
winters
are a bit colder, assuming I want to at least grow hardy greens year
round.
I'm currently using a cheapo tubing frame/plastic cover house, perhaps 8
by
6 feet, and the R-factor is, if anything, negative! *There's a bok choi
hanging on somehow, but not growing at this point.

Our little self built greenhouse has a twin walled polycarbonate roof.
Doesn't seem to bother the plants, some do grow a bit leggy but that's
more
likely because it's on the N. side of our garage, overshadowed by a good
sized Camellia tree, and very crowded in there.

Our greenhouse has double wall polycarbonate sheets from Screwfix. It
isn't cheap but is very effective and unbreakable.

Wow, we have a Screwfix on a trading estate in our town. *I'll go and have a
look, although it depends if it fits our elderly greenhouse. *Thanks for the
tip.

someone

We order from Screwfix and have it delivered to our daughter. Is
Screwfix B & Q?

Judith