The secondary window traps an insulating mass of air involving the interior and outer glass which minimizes heat reduction, increases U-values, and if a lower-E glass is used it is going to reflect again infrared radiation and so keep a lot more warmth inside the room. The isolated frames will https://glassceilinglamps67787.loginblogin.com/33222248/the-smart-trick-of-bayswater-secondary-glazing-services-that-nobody-is-discussing