What percentage of light does it block?
1654734
Not sure about percentage but some sun does shine through. Not enough to get sunburned though. Hope this helps.
1654735
I'm here in Fresno California, so the 'desert tan' blocks a good 60% of the sun. If you're looking for shade I'd go for the darker 'green.' When the sun is at the lower angles, I appreciate more light of the tan.
1654736
we have it over our backyard, which has cement flooring. For the summer, it really helps our backyard remain notably cooler, because the sun does not hit on the cement to directly. 50 percent?
1654737
I just checked, I cam look at the sun directly through this tan sunshade and not hurt my eyes.
1550644
We put LED bulbs in this and I would say around 50% of the light comes through the shell part.
15114
According to this window film manufacturer, UV light only accounts for 40% of fading, and most windows block 20-40% of UV just by being glass. This would slow fading, but not prevent it entirely. http://solarsolutionsny.com/fading.html
1321609
Don't know the percentage but it is excellent at blocking the sun and still being easy to see through.
1976199
Yes. It completely blocks out the light.I hang it in front of my garage window.
607899
You can see through it - It will block the sun like shade it but not completely.
120764
I cannot answer whether it actually blocks or what % UV blockage it provides as i do not have scientific equipment to determine that kind of information. However, it did give nice shade, allowed rain to filter through, and tolerated some very strong wind storms. I finally took it down for winter when the first snow arrived and it was holding snow.
320925
i put mine in and i dont have a reflector on mine it works fine i would think that it would block some of the uv light
1693317
I would guess 20-25%. And light transmission or how light or dark the film is would be47% the lower the #the darker the film.A film with 47% light trans.,like the low e gives best balance of glare reduction and good visibility.
1550645
I'd call it about 50% brightness through the shell, plus the direct light coming from the bottom. Good task lighting for the kitchen or bar.
1693318
It blocks about 20 of visible light, and blocks a whole lot of heat. The amount of heat reduction is makes it all worth it.. My couch is right in front of a all day daylight window and its the difference between being able to sit on it at noon now vs it being a stove top burner.
364431
It is translucent and would let light come through. It is tough though. And very lightweight.
2068475
It depends if you put a single row or double light bar. If you do a double it's gonna block a lot
553088
No. It filters the light but is heavy enough material that you can't see through it.
1224965
I would say it offers about 30% shade as a guess. I purchased this tarp to hang in the dugouts for our softball games to give the players some relief from the hot sun. It did do its job well of keeping the hot sun off of the girls, but did not block all light from coming through. I guess another way of looking at it would be you cannot look up thru the tarp at the sun directly as it would still be too bright to look at. Hope this answers your question.
883146
The screens are translucent -- so if you have bright light, it will diffuse the light but not completely block the sunlight. I think it should work as a good block to keep the strong sunlight from "sunbleaching" fabric etc.
691897
It blocks blue light regardless of it's source, artificial or natural. And I just got my UV meters out and for instance the total UV (UVA + UVB) measured was about 1.6mW/cm^2 and UVB alone measured 113 uW/cm^2. With the glasses placed over the sensors they measure 0.00mW/cm^2 and 4uW/cm^2 respectively. The UV meter also measures 4 indoors so I think the that is a calibration issue and it is really 0 for UVB. UVB is easily blocked by plastic even if not tinted. So I would say the answer is yes, it blocks UV and blue light.