Clear glass u value 56 Product Name: Thickness: Stock Size: ComfortPlus¹ Clear: 6. 2 • Winter Nighttime U-Value: 1. For example, a U-value of 0. No distractions. Determination of energy balance value. 74 20% UV Tdw-ISO 0. 05 PPG Monolithic Glass Comparisons U-Value5 EN 673 (W/m2*K) Table of Performance Values*1 A U-Value is a measurement of insulation in general the lower the value the more efficient the window as less fabric heat is lost through the glass or frame. If R-value tells us of a surface’s thermal resistance, then U-value is a surface’s thermal transmittance. 76 Visible Light 81% 59% UV Tdw-ISO 0. This number is the inverse of the U-Value: the higher the number, the more efficient the window in reducing winter heating costs. Allows high level of visible light transmittance and exterior clear glass appearance: U-Value: 0. Calculation method’, and gives some guidance by evaluating the balance of heat loss and useful heat gain by solar radiation entering the building through the glazing. 6; Advantages of Low-E Glass. Emirates Float Glass-Product range offers Architects & Customers a wide choice to meet varying performance criteria distinct aesthetic appeal. The most common glass combination is 6-12A-6 with double silver low-E,U value is around 1. Tinted. Tdw ISO/CIE Indoor Glass Temperature (°F) Trans Reflectance Out In Air Argon Winter Summer Clear Clear 82 The U-Value of glass is the same as the U-Factor. It is NOT a measurement of the rest of the window, and does not reflect the thermal efficiency of the frame and other window components. Because Low-E glass improves (lowers) the IG unit U-Value, using Low-E glass will increase the unit’s interior glass surface temperature. • Lower U-values mean higher performance • Reduces furnace heat loss •Helps reduce heating energy costs Solarban® 90 glass is a low-e glass featuring proprietary multi-silver solar control coating 4 Values are based on comparison of Renewal by Andersen® double-hung window U-factor to the U-factor for clear dual pane glass non-metal frame default values from the 2006, 2009, 2012, 2015 and 2018 International Energy Conservation Code "Glazed Fenestration" Default Tables. GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 6mm (2-SunGuard® DS Grey T (Middle East & Africa)) GAP: 100% Air 12. 4 (40%). To calculate U-value, divide 1 by the R-value—a 3. The U-value of a window is a measurement of the rate of heat loss indicating how well your windows are keeping valuable heat in. 18: Insulates as much as 50% better (double) or 62. U-factor is the rate at which a window, door, or skylight transmits non-solar heat flow. The U-Values for spandrel glazing are the same as the corresponding vision unit. Heat strengthening increases the strength of Aug 1, 2023 · The difference between clear and low-iron glass is the greater transparency of the latter, making it more suitable for uses such as frameless glass walls, back-painting, markerboards, UV-bonded display cases, partitions and dividers, and other applications. The u value doesn't change for the different orientations (north, south, etc). It is expressed as Watts per square meter Kelvin W/m2 K. All performance data is calculated using LBNL Window 7. U-VALUE The U-value is the measure of how much heat is transferred through the window. SHGC (Solar Heat Gain Coefficient) Within ∓ 10% ≤ to SHGC: Shading Coefficient. 12 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. The U-factor accounts single glass performance values vlt visible light transmission vlr visible light reflectance vlri visible light reflectance shgc u-value colour and type % external % internal % w/m2k clear float 3mm 90 8 8 0. Nov 14, 2017 · The quick response is as follows: ¼” (6mm) laminated glass has an approximate winter nighttime U-Value of 1. 9 5mm 88 8 8 0. The lower the U-Factor, the better the window insulates. U-values are measured in w/m2K which is the units of watts per square metre per degree Kelvin or in other words the amount of heat loss through a 1 square metre of material for every Apr 28, 2023 · U-values, also known as thermal transmittance values, measure the rate of heat transfer through a building element, such as an Insulated Glass Unit (IGU). 29 0. With RHG, it is convenient to use a single value to evaluate glass thermal performance in summer conditions. 73 30. VFloat™ SuperClear low iron float glass is a specialist ultra clear glass offering the highest possible levels of light transmission and visual clarity. 2 W/m 2 K. 47 0. 47 1. The U-value is the overall heat-transfer coefficient; a numerical expressio Laminated glass is designed to minimise serious injury to humans that may accidentally collide with glass. 0 W/m²K for a wooden door). 5% better (triple) than standard clear insulating glass: Ultraviolet Energy: 58%: 4%: 4%: Blocks 94% of UV energy, a common contributor to fabrics, carpet and furniture fading The Center-of-glass U-value is a measurement of ONLY one location on the glass. Glass SHGC depends on type of tint, tinted glass thickness and on cavity width. It is nowadays redundant to scale SHGC by 0. 346 W/m²·K. • Argon figures are based on a standard 90% fill. 1. VIRIDIAN GLASS GUIDE™: GLASS PERFORMANCE - SINGLE GLAZING Product Name Nominal Thickness Visible Solar UV Trans U Value SHGC Weight kg/m2 Selectivity Trans. 73 0. Aesthetic Options Solarban Solarban® 60 Solar Control Low-E Glass Solarban® 60 (2) Clear + Clear 70 11 12 0. Keyword search through the glass descriptions. 5 0. Jan 24, 2022 · Insulated Glass Units of 6mm/12 Argon/6mm glass: U value of 2. 885 W/m²·K. 0mm. 48 SHGC 0. So we take our R-Value of 21 and divide one by that number, and we get a U-Value of . 43 The U-value of a window is a measurement of the rate of heat loss indicating how well your windows are keeping valuable heat in. U-Value Visible (τv %) ρv % out ρv % in Solar (τe %) ρe % out Winter Night (Btu/hr·ft²·F) Guardian SNX 51/23 on Clear 51 14 14 91. 56W/m2. U-values typically vary from 0. Solar Heat Gain Coefficent is the fraction of incident solar radiation entering a home through the windows. 5 Effective U-value calculator. U-value (thermal transmittance) U-value is also called U-factor in the NFRC and center of glass U‐values for various Vitro glass products. U-FACTOR ( U-VALUE ) U-factor is a measure of the heat gain or loss through glass due to the difference between indoor and outdoor air temperatures. 72 5. 75 (75%) whereas replacing the outer sheet with Pilkington Perfect Day Super-Blue brings the G-value down to 0. Values are center of glass calculated using LBNL Window 7 per NFRC100 conditions. 76 0. Glass U-Value depends on cavity width. 8 °C for summer condition U-value) are fixed for a standard summer daytime condition. 27 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. Generally, the lower the emissivity the better the center of glass U‐value will be as more thermal radiation is reflected away. 55 0. 41 0. 7 7 19 38 0. A lower summer daytime U-value indicates better heat-blocking capabilities, crucial for mitigating solar heat gain during hot periods, thereby enhancing air conditioning efficiency. As the U-value decreases, so does the amount of heat that is transferred through the glazing material. The gas mixture is assumed to consist of 90% argon and 10% air. Primary Flat Glass, ASTM The values are based on double glazed units incorporating inner panes of 6mm clear glass and the outer pane is as shown in the table which has a low e coating incorporated into the glass. 0 (very significant heat loss) (high heat loss). 24 SHGC 0. 88 1. 82 1/4" Clear UPG Tempered Glass is certified by the Safety Glazing Certification Council (SGCC) conforming to 16 CFR 1201 & ANSI Z97. Transmittance and reflectance values based on spectrophotometric measurements and energy distribution of solar radiation. The units are Btu/(hr. It is considered by the U. U-Value2 (Imperial) K-Value2 (Metric) Shading Coeffi-cient3 Solar Heat Gain Coeffi-cient4 Insulating Glass Unit*1 (1/4" outdoor lite as noted below + 1/2" airspace + 1/4" • clear glass + 0. The South African National standard SANS 1263 Part 1:2013 For example, if your home has 70 m 2 of glazing with aluminium frames and clear glass with a U value of 6. 12 10. The U-Factor measures how well the window in-sulates. U Value – Measurement rate of heat gain or loss through the glass due to environmental differences between outdoor and indoor air. 10). 82 5. 40 1. 9 10 19 35 0. 26: Insulates 46% better than a standard clear insulating glass unit : Ultraviolet Energy: 58%: 17%: Reduces fabric-fading UV energy three times more effectively than clear glass : Damage Weighted Transmittance * 0. 6 15mm 83 6 U-Factor and the Solar Heat Gain Coefficient (SGHC). 0 0. Less than or equal to. 8 2. 74 (Double Glazed) 6 mm clear (SB60) / 6 mm Clear 24. Primary Flat Glass, ASTM GLASS SIZES AND OPTIMIZED U-VALUES U-VALUE U-VALUE METRIC IMPERIAL GLASS TYPE 2SPACER 2 (W/m . 3 software and represents center of glass performance data. 29. This product is commonly referenced as SolTech¹ Clear or SolTech¹ Grey to reflect the glass substrate. Product Description Nominal Thickness VLT% U Value SHGC Glass Type; STORMSAFE: 17mm STORMSAFE SOL-R™ Grey (2) low-E laminated /12mm Argon / 6mm Clear float Here, 0. 94 0. What is a U Value? U Value is A measure of air-to-air heat transmittance (loss or gain) due to thermal conductance and the difference in indoor and outdoor temperatures. Solar Heat Gain Coefficient Oct 31, 2024 · To calculate R-value, divide 1 by the U-value figure. Light to Solar Gain. 0476. Clear. Winter and Summer U-Values are the only performance values available for spandrel glazing. 80. These values are available for all Vantage aluminum windows and aluminium door products as part of their WERS rating. 8 VIRIDIAN GLASS GUIDE™: GLASS PERFORMANCE - INSULATED GLAZING Outside Glass Inside Glass Nominal Thickness Visible Solar UV Trans U Value SHGC Weight kg/m2 Selectivity Trans. °F). It can range in value GLASS: Guardian Clear Glass (North America) Glass, 1/4" (6mm) Winter night U-Value. GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 6mm. 46 0. The lower the value, the greater is the insulating value. S. The industry still uses shading coefficient mainly for the purpose of backward compatibility. 48 2. 47. When paired with clear glass in a standard one-inch insulating glass unit (IGU), Solarban® 90 glass offers a Solar Heat Gain Coefficient However, sometimes a centre-of-glass U Value is given, which simply measures the performance of the glazing alone. without edge effects, and expresses the steady-state density of heat transfer rate per temperature difference between the environmental temperatures on each side. 24. Thus an additional benefit of using Low-E glass is that it permits a higher relative humidity in a room before condensation will occur. Framing, cladding, frame type and other items will affect the overall thermal values of a complete window. U-Value % % % % W/m2K 6 mm Solar Control Low-E Glass – 12 mm Air Gap – 6 mm Clear Glass Clear Lite Plus Clear 54 15 11 38 0. Solar Performance of Glass When the solar spectrum (sunlight) strikes glass, one of three things occurs, it is either reflected U-Value. 5 85 8 8 65 7 <1 5. The building design & the local weather conditions meant that you can relax the glass values & still be energy efficient. 800 Park Drive , Owatonna , MN 55060 US | (800) 533-2080 Superior Insulating Performance. It is the responsibility of the glass fabricator to ensure that the intended application is appropriate and complies with all relevant laws, regulations, standards, codes of practices, processing guidelines and other requirements. 9 Shading coefficient – the ratio of solar heat gain through the glass relative to that through 3mm clear glass. Argon fill is 90% and air fill is 100%. So called 'Low-emissivity' or 'Low E' glass offers improved thermal insulation denoted by very low U-values. ft2. 1 3 2. Two 4mm sheets of basic clear glass might have a G-value of 0. 15 12. 1. 0 2. The spandrel color does not impact U-Value. The Neutral component identifies the coating hue and is available on Clear and Grey float glass. 78 20. 65 3. 060" clear PVB + 1/4" clear glass) Clear Glass 77 49 15 11 0. 9 4mm 89 8 8 0. 7 2. 65 Apr 18, 2021 · For example, a glass may be with lower SHGC but higher U-value than another glass. Refl. The Is the glazing parameter that characterizes the heat transfer through the central part of the glazing, i. Derived metrics like summer daytime U-value and winter nighttime U-value offer nuanced insights into glass performance under specific environmental conditions. 24: 0. 7 12mm 84 7 7 0. range. If we do our reciprocal calculation using a U-Value of . 91 • Shading Coefficient: 0. Solarban ® 60 Starphire ® glass allows ultra-clear glass to be used for vision glass, skylights, atriums, storefronts and entryways without sacrificing energy nighttime U-value. 3. 34 Relative Heat Gain W/m2 535 427 332 565 414 308 262 U-Value The rating given to a window based on how much heat loss it allows. Expressed in hr. Total System SHGC range. 5 5 10 15 20 25 30 /m 2 K) Cavity Widths (mm) Allows high level of visible light transmittance and exterior clear glass appearance: U-Value: 0. 0 1. ComfortPlus™ products offer improved thermal and sound insulation in a single laminate with a selection of colours, daylight transmission and solar control. Materials with very different U-values that are used to make a unit like a window can reduce the unit’s overall ability to stop the transfer of heat. 86 1. 40, depending on the manufacturer, the type of glazing (low E or clear glass) and the type of spacer between the glass. 38mm: 3660mm x 2760mm: ComfortPlus¹ Clear: 8. 87. All values are centre of glass. High See full list on otm. Sealed Unit Width U-values Example Specification (Click below to view PDF) 24mm: 1. k. 5. 39 95 60 (3)(5) glass is more than 61% better than standard clear insulating glass. 81 5. 41 Jan 18, 2022 · The U-values are winter night formulations, expressed in units of Btu/(hr·ft²·F). 0 U-value) 24mm: 1. In Trans. technology, Solarban® 90 glass is engineered to outperform Solarban® 70 glass, the most preferred high-performance solar control low-e glass in North America. It is expressed as Watts per square metre Kelvin W/m2 K. 66 1. 24: Insulates 50% better than a standard clear insulating glass unit : Ultraviolet Energy: 59%: 8%: Reduces fabric-fading UV energy three times more effectively than clear glass : Damage Weighted Transmittance * 0. 71 0. In cases where it is desirable to laminate the coating in direct contact with the interlayer material, the U-Value of the glass will be about the same as that of uncoated clear or tinted glass. 70 1. Enter a keyword for product or colour such as "eclipse". 84 5. 48: 0. Clear 6. 25 SHGC 0. Within ∓ 10% ≤ to Shading: Glass Type. Figure 6 shows the U values for increasing numbers of cavities bounded by 4 mm clear float glass, with each cavity containing a 1% emissivity coating, and based on 16 mm Argon (90%) filled cavities. Visible Light Reflection 8. 17 SOLEXIA® Glass 67 32 13 8 0. The U-value will be the same for that glass regardless of the window the glass is in. 6W/m²K or Window Energy Rating = Band C: Doors with more than 50% of their internal face area glazed: 1. Department of U Value. 45 Allows high level of visible light transmittance and exterior clear glass appearance: U-Value: 0. ComfortPlus™ consists of a range of clear and toned laminated glass options featuring a transparent, durable pyrolytic Low E coating. G. F) For U-Values as low as 1. g. number of cavities increases, the improvement in U value decreases. Glass Type. It is common for double glazing companies to cite the stand alone heat reduction in just the pane, so always double check how much heat will be lost for the rest of the window frame as well. High visible light transmittance, comparable to conventional clear glass: U-Value: 0. 38mm: 5100mm x 3210mm: ComfortPlus¹ Clear: 10. Glass Type Emissivity (low‐e) U‐Value* (air) U‐Value* (argon) Clear 0. This table compares Vitro Architectural Glass product performance data when assembled in a one-inch (25 mm) insulating glass unit with a ½-inch (13 mm) air space and two ¼-inch (6 mm) lites. U Value: the total heat transfer out of a window (Btu/hr-sq ft-F or W/sq m- C). 2. 74 25. 65 Clearvision Clear LC 39/29 36 24 11 28 0. Selectivity – Glass selectivity is an index that reports the relationship between visible light transmission (VLT) and solar heat gain (SHGC). 77 5. O. Summer day U-value. This calculator is based upon EN ISO 14438:2002, ‘Glass in building. The more similar the U-value of a unit’s components, the more similar the U-value of the finished product will be. 89. The lower the number, the more effective the insulation. 5 Exterior tint may vary from unit to unit. • For multi cavity and low-E combinations please contact Customer Services. ) Uncoated glass is assumed to have a normal emissivity of 0. Low-e 4th Surface Technology allows double-glazed insulating glass units to achieve 12% better thermal performance than clear glass triple-pane Glass description. Sungate ThermL™ glass is a low-e coating engineered for use on the interior surface of a typical one-inch insulating glass unit (IGU) that dramatically improves U-values when paired with any Solarban® solar Solarban ® 60 Starphire ® glass can help you achieve your design vision of a glass building with the ultimate in transparency and visual clarity combined with energy efficiency. 8W/m²K: 1. Remarkably Clear. It is measured in watts over m2 per degree Celsius (w/m2°C). 49 U value). Legend: 1-Clear float, 2 – Bronze Tint, 3 – Grey tinted, 4- Green tinted, 5- Clear Reflective, 6- Bronze Reflective, 7- Grey Reflective, 8- Green Feflectiv. 7 Clear Radiance Clear 47 22 14 35 0. e. 25: Insulates as much as 50% better than standard clear insulating glass: Ultraviolet Energy: 59%: 20%: Blocks 80% of UV energy, a common contributor to fabrics, carpet and furniture fading : Damage Weighted Transmittance * 0. 30. 6 and an SHGC of 0. 78 15. 00. 7. 6. 44 1. 7 Clear Vision Plus Clear 39 23 13 29 0. Guardian UltraClear® Low-Iron Glass. SHGC Viracon's solar and optical performance data is center of glass data based on the National Fenestration Rating Council measurement standards, calculated using Lawrence Berkeley National Laboratory's (LBNL) WINDOW 7 software. 0: 4mm Clear, 16mm Argon, 4mm Planitherm One (1. This can improve Aug 2, 2012 · Even a standard window with double pane glass will vastly improve performance (a standard clear insulated glass unit has a . 030, we get an R-Value for the window of 3. VFloat™ SuperClear has distinctive clarity that is achieved by using sand with much lower iron oxide content in the batch mix when the float glass is manufactured. 02 while a 1” (25mm) insulating glass unit made with clear glass and with no coatings of any kind has an approximate winter nighttime U-Value 0f . It is also referred to as the overall coefficient of heat transfer. 57 - 0. 0 W/m²K. 43 0. 61 2. 80 1/4" Clear laminated - . 8W/m²K (or exempt if fitted into existing door frame) Aluminium Windows and Doors: U-Value = 1. 910 W/m²·K. 37 U-values. 025 Btu/hr·ft²·F. 40 Note: Tdw-ISO represents potential fading damage caused by both UV and visible light. 75 5. What is U-Value? U-value, or U-factor, is a score given to a surface based on how quickly it allows heat to pass through it. An insulating glass unit comprising 4 mm Pilkington Optifloat™ Clear outer pane, 16 mm argon gas-filled cavity and 4 mm Pilkington Optitherm The winter nighttime U-Value (insulating value) of a Solarban® 90 (2) glass unit is 50% better than standard clear insulating glass. Calculated Values are in accordance with NFRC2010 Jan 14, 2017 · The glazing on the glass has its own U-value. 75 0. 0. 38mm: 5100mm Guardian ExtraClear® float glass contains significantly less iron oxide than standard clear float glass, resulting in enhanced colour neutrality in transmission and reflection. The U-value represents the amount of heat that passes through one square meter (m²) of the element when there is a temperature difference of one degree Celsius (°C) between the interior and exterior environments. 030 PVB UPG Tempered Glass is certified by the Safety Glazing Certification Council (SGCC) conforming to 16 CFR 1201 & ANSI Z97. The SHGC measures how much of the sun’s heat comes through the window. Winter night U-Value. Shading coefficient is a relative scale in comparison with a clear glass. U-values indicate how efficiently an insulated glass unit (IGU) keeps hot or cooled air within. For doors which are half-glazed the U-value of the door is the average of the appropriate window U-value and that of the non-glazed part of the door (e. Glass U-Value depends on cavity width and type of coating. K) (BTU/hr. 8 0. 6. 31 to . Light to All performance for C. 32 1. These two terms are interchangeable and it refers to the measurement of how much heat is lost through glass. Visible Light Transmission 88. Solar Control Low-E Glass Standard Clear Insulating Glass Solarban® 60 (2) Insulating Glass U-Value 0. 6 0. 840 0. 6w/m2. Substrate The glass shall comply with the following performance criteria: U value Solar Heat Gain Coefficient (SHGC) Visible Light Transmission % Glass Only Values Total window Heat Strengthening All glass which requires extra strength and thermal resistance will be heat strengthened. 36 1. The lower the number is, the better the insulating qualities of the glass. U-Value – A measure of the insulating characteristics of the glass or how much heat gain or loss occurs through the glass due to the difference between indoor and outdoor temperatures and is measured Btu/ hr•ft2 U-Value (W/m2. 6 Clear Priva Clear 30 31 17 22 0. Guardian ExtraClear® can be heat treated or laminated and has a wide range of applications including high performance facades, partitions, store fronts, solar control Viridian reference SolTech¹ Neutral aligned to Oceania Glass branding. 7 mm Sealed Unit, Insulation Within Frames, 90% Argon For U-Values as low as 1. 54 0. 25 Calculation Standard: NFRC 2010 Guardian SNX 51/23 on Clear Outdoors Guardian Clear Glass (North America) Thickness . 65 Clear Brook Plus Clear LC 33/22 31 39 21 22 0. Low-E glass offers several distinct advantages for your Melbourne home. Glass has a low R-value, so by Apr 4, 2018 · The lower the G-value, the less the conservatory will overheat during the summer months. 8W/m²K (or exempt if fitted into existing door frame) Other doors: 1. Coated. Solar Heat Gain Co-efficient (SHGC) is the amount of heat from direct sunlight that passes through the glass. • Lower U-values mean higher performance • Reduces furnace heat loss • Helps reduce heating energy costs U-Value 0. GLASS: Guardian Clear Glass (Middle East & Africa) Glass, 4mm. 92 • Shading Coefficient: 0. Argon ThermoTech™ Clear With low-e coatings applied to the #2 and the #4 surfaces of an insulating glazing unit, you can reduce the center-of-glass U-Factor by 21%, compared to a unit with a pyrolytic low-e and a clear lite. 24 0. 36. 0W/m²K: U-Value = 1. 2 - 3. The weights (630 W/m 2 for shading coefficient and 7. 2W/ m 2 °C, on a winter’s night when it is 15°C colder outside compared with indoors, the heat loss through the windows would be: For example, 4mm clear float glass has a U value of 5. Coating Density N/A. Insulated glass is widely used in curtain wall,glass wall ,high rise buildings. 72 - 0. 28 1. 31 U-Value 0. K) A measure of the air-to-air heat transfer due to thermal conductance and the difference in indoor and outdoor temperatures. The lower the U-Value, the better the window acts as a heat insulator. 9 2. 2W/m²K: U-Value = 1 High visible light transmittance, comparable to conventional clear glass: U-Value: 0. U value, in simple terms, is the measurement of heat loss in a glass and the rate at which the heat is lost. • U-Values are quoted in W/m2/K, rounded down to the nearest 0. 23 0. Guardian UltraClear® low-iron glass can help bring the wow factor to your next architectural project. 41 1. 1 (very little heat loss) to 1. 43 Visible Light 63% U-Value 0. Note: Measurement of improved U-values are calculated using a baseline of a Double Low-e 1” IGU Solarban ® 70 (2) Clear + Clear 1” with argon from Vitro Architectural Glass, with a U-value of 0. ‘R’ stands for resistance. F/Btu. 5 85 8 8 64 6 <1 5. It is a measure of the solar heat gain referenced to 3 mm clear glass which has the designated value of 1. 65 Solar Heat Gain Coefficient 0. 10 equals an R-value of 10 (1 divided by 0. Center of Glass U-Value (BTU/hr/ft²/°F) Comfort UV Trans. 0 simulations. 929 Btu/hr·ft²·F. G U- and R-values are based on ASHREA Winter Conditions. ENERGY STAR does not consider center-of associated U-Value performance improvement of the low-E coating will be lost. U-Value % % % % W/m2K 6 mm Solar Control Low E Glass - 12 mm (Air Gap) - 6 mm Clear Essence (Low E Glass) Clearlite Plus Clear LC 54/37 52 15 12 36 0. Replace windows with rusted or rotten frames with frameless glass block windows – Glass blocks are durable, offer high privacy, vastly improve security and can be mortared into masonry foundations or U-Value = 2. While the U-Factor can take any value, in general for windows it ranges from 0. 326 W/m²·K. 55 U-Value (COG) W/m2K 3. 20 to 1. The virtually inseparable thermochemical bond between the PVB interlayer and glass causes the glass to adhere to the PVB interlayer, holding the glass sheets together. For windows, skylights, and glass doors, a U-factor may refer to just the glass or glazing alone. Variations and Strategies for Improving U-Value. 4. Laminated glass is a safety glass product and can be used in insulating (double CLEAR Glass 1/83 7390 83 9 8 1. However, the solar control properties of the coating will still Solar Control Low-E Glass Standard Clear Insulating Glass Solarban® 70 (2) Insulating Glass U-Value 0. 26 Vitro Solarban 90 on Clear 51 13 19 91. U-Value 5. 8 6mm 88 7 7 0. 3333. 980. 045. 64 Clear Radiance Plus Clear LC 49/32 46 20 13 31 0. 7 Clear Comfort Clear 30 25 14 24 0. 20. It’s noticeably clearer than standard glass — so what people see is completely up to you. 65 2. ，with more low-E coatings and glass overall thickness,as well as Argon ,U value of triple glazed units can achieve 0. Nov 18, 2020 · Therefore, R-Value multiplied by U-Value always equals 1. 73 (Double Glazed) Table of U-Values The following table gives centre pane U-Values for the constructions and cavities as shown 6 8 10 12 14 16 18 20 Clear Clear Air 3. 93 0. 55 Visible Light 72% U-Value 0. 86 5. Summer daytime U-value and winter nighttime U-value are two common derivatives It’s important to note, that these values are “whole window values”, not glass alone. 26 1. A lower U-factor indicates better insulating properties. 5 87 8 8 71 7 <1 5. Misunderstanding 1:Thicker glass has much better U value than thin glass, laminated glass U value is significantly lower than that of the same thickness glass. 63. 25 1. NFRC U-factor ratings, however, represent the entire window performance, including frame and spacer material. U value is typically measured in Watts per square metre Kelvin or W/m2K. 8 8mm 87 7 7 0. sg See how these sample configurations can help you achieve real R- and U-value improvements. The lower the U-value, the better the insulation. 77; Insulated Glass Units of 6mm/12 Argon/6mm glass with a Low-E coating: U value of 1. It’s clear from these configurations that new technologies like VIG and fourth-surface low-e coatings represent the next generation of thermal 8 U Value – measurement unit is watts per m2 per degree celcius (W/m2ºC) and is a measure of the rate of heat gain or loss through glazing due to environmental differences between outdoor and indoor air. The lower the U-value the better the insulation Oct 3, 2022 · An insulating glass unit comprising 4 mm Pilkington Optifloat™ Clear outer pane, 16 mm argon gas-filled cavity and 4 mm Pilkington K Glass™ S inner pane has a centre pane U value of 1. 3 3. Bangalore, where glass with SF of 37 & U-Val – 5. ft . Breathtaking views. 238 2. Now, in the above-noted code requirements, we had a window U-value requirement of 0. This performance data is not a commitment for Cardinal to produce. All C. 7 and the IG unit thermal transmittance (U-Value). True transparency. It indicates the performance of the glass based on its ability to retain heat and not let it pass through the windows. 7 Clear Brook Plus Clear 33 39 21 22 0. 33 1. Comment. U-value can be thought of as the opposite of R-value. Out Refl. 25: Insulates as much as 48% better than standard clear insulating glass: Ultraviolet Energy: 58%: 13%: Blocks 45% of UV energy, a common contributor to fabrics, carpet and furniture fading : Damage Weighted Transmittance * 0. 239 2. 7 10mm 86 7 7 0. 7 was as efficient as a glass with SF of 25 & U-Val – 3. GLASS: Guardian Clear Glass (Asia Pacific) Glass, 1/8" (3mm) Winter night U-Value. So ComfortPlus™ is a better insulating product than 3mm clear float glass. without edge effects, and expresses the steady-state density of heat transfer rate per temperature Note: Measurement of improved U-values are calculated using a baseline of a Double Low-e 1” IGU Solarban ® 70 (2) Clear + Clear with argon from Vitro Architectural Glass, with a U-value of 0. 67 1. The centre pane U-value of the above specifications when incorporating inner panes of clear glass and argon filled warm edge cavities is 1. 02 • Summer Daytime U-Value: 0. Mar 17, 2005 · Vinyl window u values range from . 5 1. 7 0. 4 and an SHGC of 0. 9, whilst ComfortPlus™ has a U value of 3. The lower the U-value the better the thermal performance of the glass. (centre of glass) ratings are based on Vision v4. Actual values may vary due to production tolerances. U-Value (Ug, W/m2 K) is the glazing parameter that characterizes the heat transfer through the central part of the glazing, i. • Winter Nighttime U-Value: 1. 74: 0. Misunderstanding 2: The thicker spacer of insulated glass, the better energy efficient performance. 1-2009 for safety glazing Applicable Standards: ASTM C1036-06 Std. 45 R-value equals a U-value of 0. 5 2. Solar Heat Gain Coefficient 0. 12 8. 74 6% UV Tdw-ISO 0. 87 is the nominal SHGC of a clear glass. 00 • Summer Daytime U-Value: 0. cslnx dgi ydvvoj ukzejsrxj frwd rdqn iwzda ftoge lghf qrzoa envrqivv cwed wjpyqy opoqaol xhli