Window & door openings in a concrete wall

Want to enlarge a basement window, add a legal basement bedroom, or cut a new door in a foundation wall? That's exactly what concrete cutting is for: we mark, cut with diamond saws, and remove the block — cleanly, without cracking the rest of the wall.

Why enlarge a basement window?

• Code compliance: to declare a basement bedroom, the building code requires an egress window large enough to escape through. Read our building code article →
• More light: a large window transforms a dark basement into living space.
• Resale value: a legally finishable basement increases your home's value.

How the job goes

• Marking the opening (structure checked first)
• Wet diamond cutting — no dust in the house
• Block removed in controlled sections
• Clean edges, ready for the window or door frame

Good to know

Most openings are done in a single day. Concrete block walls are often even faster. A steel lintel may be needed for wider openings — the contractor confirms this during the quote.