Privacy film on double glazing

greenface2

grumbler said:

iii) - nonsense

iii} with mirror or solar shade true , Standard frosted any style is normally ok  . The mirror film is fitted inside and has to deflect the heat back out . Heat gets trapped due to the coating on the outside pane of glass and can expand . sometime break the glass through impact . I own a double glazing company and warranty is invalid for DG units that have had solar film fitted retrospectively without the units being "balanced" ( popped and resealed )