Pergolas and covered patios engineered for snow and wind

Size, roof and attachment decide it. Toronto, for example, requires a permit for an accessory structure larger than 10 m², and for one attached to the house regardless of size. Rules for open pergolas vary between municipalities, and zoning limits on height and setbacks apply either way. Our team confirms what your municipality requires and, if a permit applies, prepares the drawings and submits them.

Yes, if the house can carry it. The roof ties into the wall or roof edge, so we check what the connection bears on, how the new roof sheds water and how it’s flashed against the siding or brick. Sometimes a freestanding frame next to the house is the better design, especially where the wall can’t take the load. Our engineers make that call before you commit.

Most louvred systems come with a snow load rating from the manufacturer. We compare that rating with the design snow load the Ontario Building Code sets for your location, then choose the model, post spacing and beam size to meet it. If a model falls short, the design changes: closer posts, a stronger system or a different roof. In winter, follow the maker’s instructions for louvre position.

Your zoning by-law decides. It sets setbacks from the lot lines and maximum height, and the rules differ between Toronto, Vaughan, Mississauga and other municipalities. If the design you want doesn’t fit, you can apply to the Committee of Adjustment for a minor variance; Mississauga’s, for example, hears requests for setbacks, height and accessory buildings. We check the by-law for your lot before we draw anything.

Yes, and it’s best planned into the structure. Wiring runs through posts and beams before the finishes go on, so nothing is surface-mounted later. A Licensed Electrical Contractor files a notification with the Electrical Safety Authority, and the wiring is inspected before it’s covered. Heaters also need clearances from the roof set by their manufacturer, which we design around.