UV-C rays can affect materials both on a physical and chemical level. With excessive exposure to UV radiation, materials can lose their strength, become less flexible, fade in color, and crack. Some types of material are more susceptible to UV-C than others. UV-C light can affect many synthetic and natural polymers, including neoprene Popular answers (1) Although we routinely use UV lamps inside our biosafety cabinets and assume that UV light does not penetrate through matter, there are many reports that suggest this might not Can ultraviolet light pass through glass? Ultraviolet light can pass through glass, but the amount and type of UV (eg UVA, UVB etc) transmitted depends on the type and thickness of the glass, any Diffused light scatters light throughout the house and reduces shadows caused by the greenhouse framing materials. All glazing products —polyethylene, polycarbonate, glass and acrylic, can be manufactured or treated to diffuse light. Growers should know the capability of a covering to diffuse light before making a purchase. If you want the benefit of Vitamin D from direct sunlight you need material that allows UVB light to pass through. There is a special type of acrylic that is designed for this purpose called "OP4". You can find more information here: OP4 Plexiglass Sheet. Plexiglass is more transparent than glass, allowing about 10% more light to pass through. Plexiglass is also shatter-resistant making it a safer option than glass. Is plexiglass stronger than glass? Plexiglass has approximately 17 times the impact strength of glass, making it ideal for windows, retail displays, and other applications. Edit In answer to the comment, you should be aware that no matter how transparent is the material in infrared, by absorbing the visible part of the radiation produced by the lamp it will still get hot. So your condition, transparent in IR, absorbant in visible, is not sufficient for your application if you want to avoid the shade getting hot TB3000 series containers are made of a special material that does not allow UV to pass through. Avoid metal containers and use opaque or light-shielded polyethylene or polypropylene containers. Also, do not return leftover resin to the original container. Transmission occurs when UV rays pass directly through the plastic, reflection happens when the UV rays bounce off the surface of the plastic, and absorption occurs when the UV rays are absorbed into the plastic. The Number of UV Rays that Penetrate Plastic Depends on its Thickness But solar panels only work well under certain conditions, and sometimes damage to the protective layer is unavoidable. Solar panels will work through clear plastic, but not all plastics are the same. The type of plastic you use plays a role in maintaining the effectiveness of the solar panel. Adding an additional layer will likely result in a NNnX.