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Question DetailsAsked on 2/19/2018

Adding windows to a townhome

I am looking to add 5-7 windows in the side of my house, with vinyl siding. I would like a tentative quote for such a job (1 or more on floor 4, 2 or more on floors 2 and 3).

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You could certainly ask a few well-rated and reviewed Window contractors (your Search the List category) to come out and discusss your options - I would make clear you are looking at options first off so hold off on a firm bid until you have the desired scope of work tied down, then contact them for a firm bid on what you decide on.

You can find a fair number of previous questions with answers on windows issue and ballpark costs for windows, in the Home > Window and Doors link, under Browse Projects, at lower left.

Bear in mind, adding that many windows your percentage of wall taken up by windows will likely go up quite a bit, so consider the need for reflective coatings on the glass (if in high A/C use area), U/V coatings to protect flooring and furniture from sun fading in any sun-exposed face, and whether you need double or triple-pane windows and the energy rating they should be so you do not end up with a possible excess heating or cooling bill as a result.

Normally, a window or few on a house face does not cause excessive change in HVAC bill because the much less energy efficient window area is a small percentage of the total wall area - but move toward a "glasswall" situation and it can all of a sudden become a major monthly cost for the heating/cooling bill. I have seen people put in essentially full coverage glass (except for a foot or less framing between each window) in just one wall and have their heating/cooling bill (or sometimes both) go up by 25-50%. Two houses I can think of which put in full south-facing glass on a prow-brow living room not only had its heating bill go up by over 50% in the winter (so over $150 increase),but also had to put in air conditioning (in an area where A/C is an oddity) because of the extreme solar heating in the summer.

Other considerations in choosing window type/sizes - privacy considerations, if you have kids/grandkids risk of breakage if you go with large picture size windows or ones set low to the floor, possible security risks especially with ground floor windows if applicable in your area, and of course howmny need to be openable (lower efficency and a bit more cost) and how many can just be fixed units.

And related to your window planning and also your budgeting for costs - consider, from privacy and energy efficiency and sun damage standpoints, curtains/drapes including possibly insulated floor-contact drapes/curtains, which can make a BIG difference in areas with serious cold. (Technically can help too in hot climates, but less so because the heat rises and escapes at the curtain rod, plus insulated drapes (made with foam layer) degrade quite rapidly in strong sun exposure - so white blinds are a better choice usually in hot exposures.

Answered 2 years ago by LCD

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