New Window Installation · Guelph
New Window Openings and Installation in Guelph
A new opening is a structural job that happens to have a window in it. The header carries the wall above, the City requires a permit, and the window is the easy part.
The City of Guelph lists installing new or enlarging existing windows and doors as work that needs a building permit, and it is on the list because the wall above an opening has to be carried by something. Cutting an opening without a properly sized header, or widening one and leaving the original header in place, is how cracked drywall, sagging floors and doors that will not close start. The permit process is the City checking that the header is sized for the span and the load, and the installer's job is to make the drawings and the inspection part of the schedule rather than a surprise.
Where new openings come up in Guelph
- Additions. A rear or side addition on an older house in the Ward or off Woolwich Street usually means new openings in new framing and sometimes a new opening punched through the original masonry wall to connect the two. The masonry opening is the hard part and the one the inspector cares most about.
- Basement bedrooms. Ontario's Building Code requires a bedroom to have a window that can serve as an exit, and basement windows on most 1990s and 2000s houses in the south end were not sized for that. Enlarging a basement opening means cutting the foundation wall and usually adding a window well, and it needs the permit.
- Enlarging for light. Turning a small kitchen window into a wide one, or adding a window to a blank wall, is a header job in a framed wall and a lintel job in a brick one.
- Window to door. Dropping a window opening to the floor for a patio door is an enlargement and is treated as one.
Framed wall versus masonry wall
In a framed wall the work is predictable: temporary support, remove the studs, install the new header and jack studs, frame the rough opening, then flash, set and seal the window. In a brick veneer wall the brick above the opening needs a steel lintel and the cut edges need to be finished so the veneer looks intentional. In a solid limestone or double-brick wall, which is what a lot of pre-1920 Guelph houses have, the opening is a masonry job first and the weight above has to be shored while the lintel goes in. That is slower, dustier and more expensive, and it is the kind of work where the quote should say who is doing the masonry and who is doing the window.
Heritage properties
On a designated property, or inside the Brooklyn and College Hill Heritage Conservation District, a new opening on a visible elevation is exactly the kind of alteration a heritage permit is for, and the City's application guide lists additions and window alterations as examples. That approval comes before the building permit and both come before the order. On a rear elevation of a non-designated house in the same neighbourhood none of this applies, which is why the address gets checked first.
What the quote should cover
Drawings for the permit, the structural work, the window, exterior finishing to match the existing wall, interior finishing back to paint-ready, and the inspection. A quote that covers only the window is not a quote for this job.
Frequently asked questions
Do I really need a permit to make a window bigger?
In Guelph, yes. The City's list of residential work requiring a permit includes installing new or enlarging existing windows and doors. The reason is the header above the opening. We include the permit in the schedule rather than treating it as optional.
Can you add an egress window to my basement?
Yes. It usually means cutting the foundation wall, installing a larger window and a window well, and sometimes changing the grade outside. It needs a permit, and the size the window has to be is set by Ontario's Building Code, which the permit drawings address. The quote comes after we have seen the wall and the outside grade.
How long does a permit take?
That is the City's to answer and it varies with the season and the complexity of the drawings. What we control is submitting complete drawings the first time. Ask about current timing when you call Building Services, and plan on the window order going in once the permit is issued.
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