There are two different ways to install a durable Garage Dormer. The first way is to use two-by-four lumber to frame the dormer. Cut two pieces of lumber to the exact length of the garage’s roof and screw them together. Ensure that the gap between the two vertical measurements is the same width as the window. Screw the lumber to the frame and the roof beams on either side. Next, screw the windows into place.

Once you’ve completed the rafters, it’s time to install the gable end studs. You’ll want to match the studs to the rest of the house’s exterior. If possible, you can even have a dormer installed in your garage. Remember, dormers are more costly than regular windows, so you’ll want to consider other remodeling projects before making this big decision.
Another way to save money on dormer installation is to purchase a prefabricated dormer. These structures can be purchased at home improvement stores and cost about $8,000 to $14,000 (including labor). However, dormers don’t add extra square footage and won’t give you any ROI. You can also opt for a cheaper alternative, a fake dormer. However, these dormers don’t have the same aesthetic value as real ones.
Garage dormer installation can be a straightforward project if you follow the proper steps despite its appearance. When deciding on a dormer style, you should determine if your roof is stable and can handle the additional water. Also, you should ensure that your gutters can take the extra water. Also, consider whether the dormer will have a roof downspout to carry water away from the walls. A downspout can also prevent water from entering the attic.
Before starting your dormer project, you need to purchase a set of essential carpentry tools. These tools include a reciprocating saw, framing square, and a hammer—a 2-ft. Extension ladder and scaffolding will come in handy. You’ll also need a personal fall-arrest system – a full-body harness and lanyard. Then, you’re ready to get started on the dormer construction!
You will also need to acquire a building permit if you plan to install a garage dormer. You can get a license from your local building authority for $390 to $1,930. The cost will vary depending on the size of the dormer and the location of the roof, but you should make sure to contact the local planning authority to learn if you’ll need to obtain a permit first. A full-scale drawing will help you get an idea of the size and slope of the roof.
The next step is to choose the style of your garage dormer. Ideally, your dormer will complement the existing dormers in your home. If you’re planning to install multiple garage dormers, you should select the size and style that match. To help you choose the right type for your garage, some builders can advise you on different options. You can discuss these options with your contractor. A garage dormer can add valuable square footage to your home.
There are also gable dormers and flat roof dormers. Both options provide excellent ventilation for the garage, adding an upscale look. If your garage has a flat roof, you can choose a hipped dormer. This dormer style is less common than the flat roof variety, but they are also popular in hurricane-prone regions. They’re also more expensive to install than the other types, but they will add a new room to your home.
Another style is a shed roof dormer. These dormers are commonly flat and sloped. Because they’re not steeply pitched, they don’t shed water. However, you can mitigate leakage risks with an excellent flat roof membrane. Regardless of which type of garage dormer you choose, there are certain factors you must consider before installing one. For example, the type of roofing material you use will determine the cost of your project.