For us, building work covers a multitude of different jobs from lowering thresholds which can be undertaken by our installers or creating new openings which may be done by installers or builders we have worked with for years.
Lowering a threshold is typically done when your existing door is sat higher than we want the new one to be. If this is the case we take out a course of brick work to sit your new door down and create an almost flush threshold.
It is common for clients to want to redesign their current windows/ doors to accommodate new bifold or sliding doors. Creating a new opening includes removal of brick work, possibly new steels of lintels and relation of electrics or plumbing which may currently be in place.