Have you received an estimate on replacing your windows and thought you can cut some costs by installing the windows yourself? Well, replacing your windows is not rocket science, its so easy a caveman can do it...maybe not that easy. Joking aside, if you take your time and diligently learn the process of replacing windows you will be just fine.


Hurdles: Some Bumps you will have to Conquer


  1. Getting exact measurements → replacement windows and doors are custom made to fit over or in-place of your existing windows. So, it's imperative that you get the size right.

    • Existing wood windows: if you have existing wood windows, you have a pretty easy job ahead of you. All you need to do is remove the old inside stop and install the new vinyl window against the outside stop. You definitely want to buy a new inside stop to replace that old rotten one.
    • Existing windows are aluminum: if you are replacing your old aluminum windows make sure that you take off 1/8” to 1/4” off you existing window size. It is important that you give your new windows enough wiggle room just in case your existing windows are out of square.

*If you don't want to take on the responsibility of measuring your own windows for exact measurements here's what you can do. You can call up a local window company to come to your home and give you a free estimate. Make sure they give you the exact measurements and not rough. With these measurements, you can price shop and find the best deal on replacement windows and doors.

  1. If your windows are out of square: this means that your windows have shifted since their initial installation. When you replace a window that is out of square you need to make sure that you use shims in between your old and new window to ensure a square frame. If a window is out of square, it will not operate properly so make sure that you order the new window small enough to give yourself enough room to play with.

  2. Getting the necessary tools: In order to replace your windows you will need to buy a few things. Caulking, Low-Expansion foam, sealants, trim, shims, level, drill, and hammer. Make sure that you buy quality products.


So if you are the do it yourself type, windows are a perfect project for you. Take your time, do your research, and in the end you will save a few bucks and learn a new trade. If you don't want to take up the responsibility of installing your own windows, hire a contractor to do it for you. Buy the windows at wholesale prices from a window store. Make sure to purchase the best sealants and foam for your window project no matter whether you end up installing your windows yourself, or hiring a contractor.