window glass

showa180 · Post by **showa180** » Sat Oct 06, 2007 8:59 pm

can any one tell me the thickness of glass i need for the pond window and does it have any special name as i am going to try to get some local to were i live. thanks.

PGREEN1011 · Post by **PGREEN1011** » Sat Oct 06, 2007 9:26 pm

Hi,
As far as I am aware the thinkness of the glass depends on the distance between the top of your window and the surface of you pond. If the distance is no more than 300mm the glass will have to be 2 x 8mm heat-treated, laminated glass. This should give you a total thickness of 17mm. If it is any more then it will be calculated by the manufactor.
Im not sure how far you are from Birmingham but there is a company called Watson's Glass 01902 453444. There prices are very reasonable but the cost of delivery for me down in Essex was more than the cost of the glass

It may be worth your while picking up from them
I have used a company down in kent, Whitstable Glass (thanks Justin and Bob) http://www.koiquest.co.uk/forum/viewtopic.php?p=60271#60271 you can see the details here.
Hope this hasn't confuessed you too much.
All the best

Paul

Dave Tow · Post by **Dave Tow** » Mon Oct 08, 2007 1:54 pm

Having spoken to a guy who manufactures glazed canopys for use in the construction industry, he suggested that 15mm plate glass would be more than adeqoute for a window of approx. 1500mm x 900mm, with ground or polished edges. He did not agree that laminated glass was the best solution.

Has anyone got any comments or experiences with regards to this ??

Bob Hart · Post by **Bob Hart** » Mon Oct 08, 2007 5:15 pm

I've either put in, or assisted with 4 windows now, all laminated. 3 of them were 2 x 6mm laminated, making 13mm in total, one was 2 x 8mm = 17mm

The 3 x 6mm's are all still going well, no problems at all.

PGREEN1011 · Post by **PGREEN1011** » Mon Oct 08, 2007 5:49 pm

Hi Dave,
I have spoken to several glass manufacturers they have all suggested that the thickness of the glass depends on the depth of the window, the distance between the surface of the pond and the top edge of the window. Mine is 250mm and they recommended 17mm thickness.
They laminate the glass in case of breakage.
Did the canopy manufacturer explain why laminated glass was not the best solution?
Cheers
Paul

tomy2ponds · Post by **tomy2ponds** » Mon Oct 08, 2007 5:53 pm

I have a window in my pond the glass is 25 mm lam a bit over the top but better safe than sorry.I was in the glazing industry for 24 years until recently and would NOT use plate glass for the simple reason if and i say if it should crack for any reason you have a big problem as it will leak straight away where as lam wont as you have two pieces of glass and a water tight barrier between the two

IMHO

LEE

Dave Tow · Post by **Dave Tow** » Wed Oct 10, 2007 1:58 pm

Paul,

He said that he could not see why laminated was reqiured (look at large fish tanks, they are only plate glass including the London Aquirium I believe), plate glass of 15mm thickness and above is extremly strong and would withstand a fairly hefty hit with a hammer.

In addition hw thought that in general plate glass could be obtained cheaper than laminated ???

Jules · Post by **Jules** » Sun Oct 14, 2007 9:56 am

I have always used laminated glass of variuos thicknesses. Why? Purely a peace of mind issue plus the guy I get my glass from cuts it to size whilst I wait

Jules

Post by **B.Scott** » Sun Oct 14, 2007 4:24 pm

Yup... Laminated 100%. I don't think it needs to be heat treated perse' but that lamination will keep the glass in place if it springs a leak. The glass will be broken but you will not have Victoria Falls out into the middle of your yard and possibly your fish along with it.

OK it's a bit more expensive but do you REALLY want to cut corners on this one?

B.Scott

showa180 · Post by **showa180** » Tue Oct 16, 2007 9:29 pm

just got a price from local glass place 2 x 8mil sealed laminated glass in total 16.5 mil Ã‚Â£61.10 will this glass do for a window in my new pond the size is 30 x 18 he said if one side breaks you have cover with the other unless you have a sledge hammer to it

thanks

Telthepondman · Post by **Telthepondman** » Wed Oct 17, 2007 12:14 am

Hi guys above all there is a safety issue here, if you or worse still your kids are standing next to the pond and it goes who knows what the outcome could be, it simply is not good enough to say it should be ok at this that or the other, you must be sure. Try ringing Solaglas or Pilkingtons technical who should be able to help you. I suspect it will be a sandwich of 2 pieces of laminated of about 20 mm total to be sure depending on the panel size. Good luck Tel.