

What Is Basement Window Enlargement?
Basement Window Enlargement is the term for expanding an existing window, typically in the downward direction while maintaining the width to avoid structural modifications. As many basement windows are positioned up in the ceiling joists, widening a window is not a​n option without dropping the height of the window below the ceiling joists. Hence, many homeowners opt to extend them downwards as dropping the height and structural modifications translate to higher costs.
When Do You Need Enlarge A Basement Window?
If there are occupants living in your basement, whether that be in a bedroom or basement apartment, Fire code requires that you have 1 additional means of escape, either through an Egress Window or Below Grade Door in the event main stairs are inaccessible during a fire. The most straightforward way of meeting this requirement is to enlarge an existing basement window to egress size.
Requirements aside, Enlarging an existing window does wonders to transform the space into a much brighter environment, enhancing the value of your property and increasing the resale value.
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Can My Existing Window Be Enlarged?
Most windows can be extended downwards so long as there is no obvious interference below the window on the inside, or if increasing the well size on the outside doesnt put it on the neighbouring property.
Why Choose Modpro for Basement Window Enlargement?
Modpro has the right tools, experience and expertise to enlarge your basement window per Ontario Building Code Requirements, safely and with quality. Don't leave this project to any contractor- leverage a specialist who does this type of work every day! Basement window cutting is a niche type of project with nuances which can be easily overlooked by a general contractor, exposing your home to structural deficiencies or water infiltration risk.
Window Enlargement FAQs
1. How much does enlarging a basment window cost?
A new basement window will generally cost between $2400 and $4000 to install, dependning on size of the window and if Modpro is finishing the inside of the window. Installing multiple windows does reduce the cost per window.
2. How long does it take?
The installation procees typically takes 2-4 days for 1 window, 3-5 days for 2 windows, depending on if Modpro is finishing the inside of the window. Minimal to no inside access is required on the first day.
3. Is the process disruptive?
The process involves digging, concrete cutting and carpentry tasks. Concrete cutting is done with a wet saw to control dust. 99% of the mess remains outside the house. Prepare for moderate noise on the concrete cutting day with brief instances of loud noise during the cutting itself. Dirt removal will occur a few days after the installation is done.