UV texture deformation

Hi, im making some buildings and I used the UV unwrap/smart project but when i started to texture it in photoshop i realized that some sides are squashed a little bit in their width or height. does anyone knows how to fix this?

Probably, if you show us exactly what the problem is. Otherwise, you’ll only get guesses.

Best wishes,
Matthew

As a guess you need to Ctrl+A in object mode to reset the object scale before you unwrap