Will Low-e combined with double galzing help reduce UV therefore protecting furniture etc?
Any other options to help reduce UV? * to incorporate into new windows, trying to avoid have to do window tinting at a later stage
Thanks.
Browse Forums Windows & Doors 1 Jul 16, 2009 11:18 am Will Low-e combined with double galzing help reduce UV therefore protecting furniture etc? Any other options to help reduce UV? * to incorporate into new windows, trying to avoid have to do window tinting at a later stage Thanks. Re: Low-E and UV protection 2Jul 16, 2009 12:41 pm mikemix Will Low-e combined with double galzing help reduce UV therefore protecting furniture etc? Any other options to help reduce UV? * to incorporate into new windows, trying to avoid have to do window tinting at a later stage Thanks. Hi I just finished some research for a customer and found this by Pilkington... It appears to be accurate and unbiased, excepting it compares the Pilkington product to a competitor. But the overall information shows that Low-E has minimal impact on damaging UV being a reduction of around 12% against clear glass. The tinted glass as expected performed slightly better but these could have a negative impact on energy efficiency. Ed Copyright Pilkington Technical Information ATS-141 2005-07-18 GLAZING CHOICE CAN AFFECT FADING OF HOME FURNISHINGS The glazing industry placed much emphasis on the Ultraviolet (UV) transmission of glass relative to a glazing's ability to reduce fading damage in home furnishings. Although UV radiation is the major contributor to the fading of most interior fabrics, other factors such as temperature, humidity, and even visible light can play significant roles. Two major concerns arise when a simplistic approach of equating fading to UV transmittance is used. First, there is not a single industry standard for calculating UV transmittance (T-uv). One of the most common methods of reporting T-uv defines UV energies as ranging from 300 to 380 nanometer wavelengths. This method is included in the Lawrence Berkeley Laboratory’s Window 5.2 performance calculation software. Other methods of reporting T-uv (300 to 400 nm) are sometimes used which result in very different values for the same glazing, making comparisons impossible. A second concern is that T-uv, no matter how it is defined, is responsible for only a portion of the total fading damage witnessed in home furnishings. Lawrence Berkeley Laboratory’s Window software addresses this fact by defining a damage weighted transmittance (Tdw-ISO). Tdw-ISO considers that wavelengths from 300 to 600 nanometers, well into the visible light range, contribute to material fading. Pilkington North America, Inc. research provided an excellent opportunity to check how accurately Tdw-ISO predicts fading. Hundreds of fabrics were evaluated after extended exposure behind Pilkington North America, Inc. Blue-Green and Pilkington EverGreen™ glasses. The testing determined that on average, Pilkington EverGreen glass reduced fading damage by approximately 40% compared to Blue-Green. The testing showed that Tdw-ISO is a better predictor of fading than T-uv. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ The T-uv and Tdw-ISO were calculated using the LBL Window software for all 6mm thick Pilkington North America, Inc. monolithic products. Note that a clear laminate consisting of two pieces of 3mm clear glass and 0.030” clear Solutia pvb was included for comparison. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Note that although the Southwall Heat Mirror product has near zero T-uv (300-380), it’s T-dw of 53% indicates it allows more of the damaging wavelengths of energy to pass than through a window constructed with Pilkington EverGreen™ glass plus Pilkington Energy Advantage™ Low-E glass. The information contained in this bulletin is offered for assistance in the application of Pilkington flat glass products, but IT DOES NOT CONSTITUTE A WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. Actual performance may vary in particular applications. "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: Low-E and UV protection 4Jul 16, 2009 4:42 pm Well from the report it looks like there is only Eclipse Advantage in Bronze or Grey. It's now known in Australia as Viridian's EVantage™ Quote: Viridian EVantage™ is the next generation of coated energy management glass and is the world's first pyrolytic reflective Low-E glass, for buildings that require medium performance solar control and the insulation benefits of a LowE coating. I guess world's first is stretching it a bit since it is Pilkington's product and has been for some years... Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: Low-E and UV protection 6Jul 16, 2009 7:00 pm mikemix Ed, do Ecoclassic have access to EVantage? I am sure we can do this, but the price will be significant. Local DGUs plus EVantage... but happy to get a price if you want a quote. Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Yes, neither is termite damage that is not covered by your house insurance. 3 6592 4 6201 |