Learn About Bay Window Installation Costs


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Bay Window Installation Cost

Bay window installation costs can run anywhere from $300 to $1,500, depending on the type of installation needed and the complexity of the job. In most cases, installation of a bay window will be done by a two or three person install team. They must safely remove the old unit and then properly install the new bay window, which is typically heavy and cumbersome. Explore more on bay window prices.

Insert Installation

Insert or pocket installation is the easiest and simplest approach to installing a bay window. With insert installation, the old bay is removed and the new bay window unit is inserted into the very same opening. This is only possible if the old unit and new unit are nearly identical in size and shape. It also means that the existing frame and sill are in good shape and no repair or replacement needs to be done. Once the new bay window unit is inserted, levelled, shimmed and secured in place, the inside and outside must be properly caulked and sealed to insure that the unit is both watertight and airtight.

-- Insert Installation: $300 to $600 --

Standard Installation

Standard replacement requires more work to be done to the opening, altering the size or shape in order to better accomodate the new bay window. Some repair or replacement of the wood used for the frame may have to be done in order to create a strong and stable framework to support the new bay window. From here, the new bay window unit is inserted, levelled, shimmed and secured in place. The installers must then caulk and seal the unit, both inside and outside, to insure that the unit is both watertight and airtight.

-- Standard Installation: $600 to $1000 --

Full Frame Installation

Full frame installation typically involves significant repair work to the sills and frame. Usually it means ripping everything down to the rough opening and then putting in a new frame that will properly support the new bay window. It will also typically include a bottom sill pan for water protection and flashing around the sides and along the header for even more water protection. Once everything is ready, the bay is inserted into the new opening, levelled, shimmed and properly sealed just as it is with an insert or standard install. The downside to full frame installation is obviously the high cost. The upside to this rather extensive process is the piece of mind that comes with knowing that the new bay window and the walls around will be protected from water damage for the next 20 years.

-- Full Frame Installation: $1,000 to $1,500 --

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