Damaged, leaking, or non-compliant basement window? We replace the existing window unit within your current rough opening — clean removal, proper sealing, quality finish. OBC compliant where required. Durham Region & East GTA.
Basement window replacement is the most straightforward of the three egress window services Modpro offers. We remove the existing window unit and install a new one within the same rough opening — no changes to the foundation wall, no new concrete cutting. Clean removal, properly sealed and flashed, finished inside and out.
Replacement is the right call when your basement window is cracked, leaking, or simply dated — and the existing rough opening either already meets OBC compliance or the space isn't used as a sleeping room. Not sure which service applies to your situation? This page explains the difference clearly.
Basement window replacement means swapping the window unit — the frame and glass — within your existing rough opening in the foundation wall. The concrete opening stays exactly as it is. No new cuts, no structural changes, no additional excavation.
This is a fundamentally different scope than our other two services. Egress window installation creates a new opening where none existed. Basement window enlargement expands an existing opening to meet egress code dimensions. Replacement does neither — it's a like-for-like swap of the window unit itself.
The distinction matters because the right service depends on your situation: why the window needs attention, whether the existing opening meets egress code, and what the space is used for. If your window just needs a new unit in the same opening, replacement is the most cost efficient path.
Replacement makes sense in any of these situations — and in all cases, the existing rough opening stays as it is.
Cracked glass, a failed seal, a damaged frame, or persistent moisture infiltration around the window unit — all are signs the window needs replacing. A leaking basement window can cause significant water damage to your foundation wall and interior if left unaddressed.
Older single-pane or poorly sealed basement windows are a significant source of heat loss, particularly in Durham Region winters. Replacing a dated window unit with a new energy-efficient casement or hopper window improves thermal performance and reduces drafts.
Homeowners in Durham Region replacing windows in basement units — Oshawa, Whitby, Ajax, Pickering — often want clean, functional windows that improve tenant appeal without a major renovation. If the existing opening already meets OBC egress code, replacement is all that's needed.
Everything from removing the old window unit to the finished interior trim — handled by one crew, no subcontractors.
We remove the existing window frame and glass cleanly from the rough opening, clearing out old caulking, fasteners, and any deteriorated framing material around the opening.
Before the new window is installed, we prep the rough opening — clean the surface, repair the surrounding concrete, and apply appropriate sealants to the foundation wall to protect against water infiltration.
We supply and install the replacement window unit — typically a slider, sized to fit the existing rough opening. For egress-compliant openings, we install an OBC-compliant window unit. Properly set, sealed, and flashed against the foundation wall exterior.
Exterior caulking and finishing are completed as part of our scope — the window is properly integrated with the foundation wall exterior, protecting the seal from weather exposure and preventing future water infiltration.
Interior window trim is installed or reinstalled to complete the job. You get a clean, finished result on both sides — your basement looks like the new window has always been there.
Firm quote within 24 hours. Inclusions and exclusions clearly stated.
Quick, clean, and typically done in 1–2 days. Here's what to expect.
Send us a few photos of your existing window and rough opening. In most cases, we can provide a firm, itemized quote within 24 hours without a site visit. We'll confirm whether a straight replacement is appropriate or whether you might need an enlargement instead.
Once you approve the quote, we book a date. We'll advise on whether a permit is needed for your project — in many cases, a like-for-like replacement within an existing opening does not require a building permit, but this varies by municipality in Durham Region.
Old window out, rough opening prepped and sealed, new window in, exterior flashed, interior trimmed. One crew, 1–2 days, done cleanly. We leave your basement looking better than we found it — not like a job site.
Firm quote within 24 hours. Most replacements quoted by photo.
Firm quote within 24 hours. Inclusions and exclusions clearly stated.
Because replacement doesn't involve cutting a new opening in your foundation wall, excavation, drainage & dirt removal - it's the lowest-cost option of the three services Modpro offers. You're paying for window supply, removal, proper sealing, and finish.
Cost varies depending on the window type, size, condition of the existing rough opening, and the level of interior finishing required. We'll give you a firm, itemized quote — not a ballpark range — within 24 hours of receiving your photos.
Real, verified Google reviews from Durham Region homeowners. Every rating comes straight from our Google Business Profile.
"We recently hired Modpro Egress Solutions for a window project and couldn't be happier with the results. From the initial quote to the final installation, everything was handled professionally. They explained the process clearly, showed up on time, and completed the job within the timeline they promised. Kirk and his team were respectful of our home, kept the work area clean, and the quality of the installation is outstanding."
"Egress window creation, installation, and clean up in basement. On time, excellent communication, reasonable pricing, prompt, professional, and full clean up. Supporting small business in the area, would both use again and recommend without reservations."
Firm price within 24 hours. No site visit needed in most cases.
Common questions from Durham Region homeowners considering a basement window replacement.
Basement window replacement is typically the most affordable of the three egress window services Modpro offers, since no new foundation cut is required. Cost varies depending on the window type, size, and whether any exterior or interior finishing work is needed beyond the window swap. We provide a firm, itemized quote within 24 hours — typically based on photos of your existing window. Contact us directly for an accurate price for your specific project in Durham Region.
A like-for-like window replacement within an existing rough opening often does not require a building permit, since no structural changes are being made to the foundation wall. However, if the replacement involves any change to the opening size — even minor adjustments — a permit may be required. Requirements also vary by municipality in Durham Region. We advise all clients on whether their specific project triggers a permit requirement during the quoting stage.
Yes — a like-for-like replacement keeps the existing rough opening size and simply swaps the window unit. If the existing opening already meets egress code dimensions and the window just needs to be replaced (due to damage, age, or failed seal), no enlargement is necessary. If the existing opening doesn't meet egress code, we'll let you know during the quoting process and can explain your options — replacement in the same opening, or enlargement to meet OBC requirements. This being said in rare circumstances, changing a slider to a hopper could meet egress requirements.
Most basement window replacements are completed in 1–2 days. Timelines can vary: in some cases the old window is removed first to expose the rough opening size, then temporarily covered while we order a window to fit exactly. If the rough opening size is obvious, the window can be ordered in advance of removing the old window. Installation of the window itself takes a day, with interior finishing adding to that only where drywalling is required.
Basement Window replacements are typically slider type. In some cases a hopper type could be utilized to maximize glass area.
Free Quote — No Obligation
Send a few photos of your existing window and we'll get back to you within 24 hours with a clear, itemized price. Most replacements are done in 1–2 days, with minimal disruption.
Prefer to talk? Call or text the team at (289)-212-8431