Sizes & Counts

Standard sizes, rough openings, and counting a house properly.

4 articles

• How to Measure for Replacement Windows — Three Measurements, Smallest Wins

  Nine measurements per window, and only two of them get ordered. The other seven are what stop a window arriving that will not go in.

• Egress Window Requirements — Four Numbers That All Have to Pass

  Replacing a window in a bedroom can quietly make it illegal, because an insert shrinks the opening and the code measures the opening.

• Standard Window Sizes — A Convention, Not a Standard

  Replacement windows are built to your opening anyway. "Standard sizes" matters for price and lead time, not for whether one will fit.

• Can You Replace a Window With a Bigger One?

  Going wider is structural. Going taller is often not. That single distinction separates a weekend job from an engineered one.