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NFRC window label basics : U-FACTOR (0.25 to 1.25): rate of heat transfer; lower~ insulates better . SOLAR HEAT GAIN COEFFICIENT (0-1): fraction of solar energy transmitted; lower~ transmits less heat . VISIBLE TRANSMITTANCE (0-1): amount of light let through; higher~ more light visible . AIR LEAKAGE (0.3 max): rate at which air passes through window joints; lower~ less air leakage . CONDENSATION RESISTANCE (0-100): how well window resists water build-up; higher~ less build-up allowed ~read…

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from Consumer Reports

Home Window Buying Guide

Did you know that a poor window rating label could be costing you money each month? We've got the scoop on how to put that savings back in your pocket.

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anatomy of a window :: GLAZING (glass): the (semi)transparent in-fill material... described by # panes... coatings increase energy efficiency... EMISSIVITY: the ability of surface to reflect heat back into a room during cold day, or keep heat outside on hot day (low-E rating is more energy efficient)... SPACER: the space filled with gas(es), sealed to create insulated glazing unit... CONDUCTANCE: measure of how material takes on and transfers temperature... FRAME: enclosing structure

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from Foursquare

Beeston

White Synseal Windows A Rated As Standard With A Ludlow Grey Solidor Composite Door Including Bespoke Sandblasted Glazing Installed In Beeston, #Nottingham. Telephone 01158 660066. Visit http://thenottinghamwindowcompany.co.uk Or Pop Into Our West Bridgford Showroom. #Legend70 #TNWC #white #synseal #windows #rated #ludlow #grey #door #composite #bespoke #sandblasted #nottingham #window #company #doors #conservatories #derby #leicester #Doubleglazing #quality #notts

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