Hi i woundered if i would need to use acro's and strong boys to cut a 900mm opening in a cavity wall for a door in the gable end of a garage, garage is only 7 years old so masonry strength is fine. My thoughts are it should be ok without as the bricks/concrete blocks should spread the load as the opening will be pretty central to the gable, BUT i would really appreciate your thoughts before i make a mess!
Many thanks
Many thanks