Basement Window Cutting — Enlarging Two Windows + Cutting a Door Opening

Date: Tuesday | Project type: Residential basement conversion | Location: Ontario (confidential)
Company: Diamond Rope Machines Inc. | Services: basement window cutting, door opening cutting, wall sawing (foundation wall)

Project overview

This project started with a common basement conversion problem: the space couldn’t be used as a real living area with the original small vent-style windows.

Our scope was basement window cutting and a new door opening in a concrete foundation wall:

• Two existing window openings were originally 24” × 12”
• Final window openings were enlarged to 36” × 36” (two units)
• One door opening was cut to 7 ft × 3 ft (84” × 36”)

All cuts were completed to match the approved layout and the renovation plan.

The challenges

Basement window cutting is rarely “just a cut”:

• Tight interior access and framing around the work area
• Wet cutting control (water + slurry management) inside a basement
• Keeping edges clean so the next trades can frame and finish without rework

This job also included a full-height door opening, so accuracy and clean corners mattered.

Our work

• Marked and verified the cut lines for both basement windows and the door opening
• Cut the openings using a hydraulic wall saw with a 24” blade and continuous water feed (wet sawing)
• Kept the work controlled and predictable, with the cut pieces staged safely for the next step of removal/handling (as shown in the photos)

Total cutting time: 4 hours.

Result

Two basement windows were enlarged from 24” × 12” to 36” × 36”, and a 7’ × 3’ door opening was cut cleanly through the foundation wall. The work went smoothly, stayed on plan, and the client signed off satisfied.

When the goal is a livable basement, basement window cutting is one of the fastest ways to change the space—if it’s executed cleanly and to layout.