Average cost of adding a bonus room above a garage for all the reasons mentioned above the cost of finishing a bonus room above your garage can vary.
How to finish attic space above garage.
To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes.
Most codes require a specified minimum amount of headroom and it s tough to meet this requirement when insulating a finished attic especially since most codes require insulation equal to r 38 or more.
I have a 2 car garage about 20 by 20 in size.
The first thing you need is access to the attic.
Planning to build an attic storage bonus room above it the space above garage measures about 18 by 20 with minimum hight of 6 feet and an access can be build from 2nd floor hallway bedroom.
Many of our neighbors homes had their above the garage area finished from the get go but for some reason ours only got framing and hvac which we kept turned off in there to avoid heating cooling a room with no insulation.
According to salter spiral stair the approximate cost of finishing the bonus room over your garage is approximately 35 per square foot.
Using the measurements from your loft ladder kit you should cut a square out of your garage roof.
We knew this room would someday become a great bonus space for us.
This will give you access to your attic storage.
Then you can add the attic hatch frame kit.
Finishing your attic can add space and utility and increase the value of your home as long as it s done properly.