The use of windows for escape should only ever be considered in an emergency situation and as a last resort; they should not form part of your usual fire escape plan.
Dim ond mewn argyfwng ac yn niffyg popeth arall y dylid byth ystyried defnyddio ffenestri i ddianc; ni ddylent fod yn rhan o'ch cynllun dianc rhag tân arferol.