Tinted glass for a greenhouse

[slippery_biscuit]

I saw an ad in craigslist this past weekend and ended up buying ten 4' x 6' dbl pane glass windows and a matching glass door. I knew they would be heavy but when I went to pick them up I saw they were commercial grade. The glass looked to be 50% thicker than residential. They were really heavy.

Anyhow, they have a very slight bronze tint. Other than an estimated 10% reduction in light transmission, will they block out any critical sunlight wavelengths? I'm pretty sure they will work just fine but thought it no trouble to ask here.

cheers

[Hummer344]

IMHO, it don't think a slight tint will affect the light to your orchids. Do you know if they have an "E" rating. The "E" rating cuts down on the amount of ultraviolet light going through the glass. I got a sliding glass door with a high "E" rating so it wouldn't fade the carpet. I don't know if the "E" rating would affect a specific wave length that is needed for orchids. Just a thought

[Brooke]

I have no clue about the wavelength reduction but are you sure about the 10% light reduction? Six mm twinwall polycarb reduces the light 15% and that doesn't appear to have any tint on it.

Use a lightmeter to check what bright sun coming through the glass actually reads. If not a drastic change, the thickness of the glass would be very helpful in the winter and cut down on the percentage of shade cloth needed in the summer.

If appropriate, you can build a wonderful g/h from your find. Here's hoping :>)

Brooke

[slippery_biscuit]

No idea on the "e" value. I have to believe the light transmission would be at least as good as the twin wall poly on that's on my existing greenhouse.

Hoping to end up with a very nice looking and energy efficient greenhouse roughly 22' x 12'.

thanks

[digitalgate]

blue spectrum of light help (UV kills) in vegetative growth. Wont know if your glass take out
the blue spectrum. Most glass take out the UV.