How to finish an Attic for Storage? Converting it Into a Room?

Are you ready to transform your whole unfinished attic into a usable living space?

No matter whether you are looking for an extra bedroom or a playroom, remodelling our DIY attic is the best option to add some space inside your house without investing extra money. Here we have a quick guide for you on how you can transform an attic space for storage or turned it into a complete finished room.

Major Things to Consider Before Finishing an Attic

You have to make sure that your attic is meeting the local building codes. And for that sake, you need to take into account the same building requirements similar to the rest of the rooms inside your home. To meet most of the building codes, you should:

  • Have a maximum of 7 feet of vertical clearance in the majority space of the room. It has to be a minimum 7 feet wide and around 70 square feet of space available.
  • It needs to be accessible through a full-size staircase.
  • Plus, it should have another exit for any emergency which can be in the form of a window as well.

Pro Tip: If the top ceiling of your attic under 7 feet tall, then you should hire a professional expert to build up a dormer for increasing the room height.

Pay Attention to Ventilation and Heating Needs

If your attic is not already having ductwork, then it is required to figure out if in case your current HVAC system will be able to support an additional room or not. Take proper guidance from an expert to check out the capacity of your current heating system or the cooling system. This will give you an idea about whether additional ductwork can be included inside your attic or not.

If you feel that having an HVAC capacity or ductwork is not in your budget requirements, then you do have some additional options for mini-split systems or baseboard heating. The use of rafter vents baffles installation will also help you to get an idea that air is fully moving behind the insulation which you have installed to finish the attic. If your attic is warm, then with the help of rafter vents it will keep the roof 100% cool.

Information about Cost to Finish an Attic

For an attic conversion, the average cost is around $49,438. The entire cost of the project will depend on different elements of your project such

The average cost of attic conversion is $49,438, according to Home Advisor. The cost of the project will depend on the elements your project includes:

Elements of an Attic Conversion


Vents & Installing Ducts $1,087
Latest HVAC System $3,942
Construction of Dormer $1,800
Including stairs $2,240
Electrical wiring $50-$100 per hour

A Quick Guide on How to Finish an Attic Storage

You need to be much in terms of your skills and capacity as you start working on your own. If you are performing it for the first time, then there is nothing wrong with hiring a professional expert.

Step No 1: Cleaning Your Attic

Once you start converting an attic, you have to first all clean that specific area and remove all sorts of junk or any building material which you no longer need. You just need to assume that you are adding new insulation just before installing the drywall and removing any old insulation. To remove it, you can use an industrial vacuum.

Cleaning Your Attic

Source: Budgetdumpster

Step no 2: Wiring of Attic for Electricity

Once you have brought up the attic to code, make sure you hire a certified electrician to determine all the basic code requirements for the wiring system. Professionals will help you to install all the electrical wires across the ceiling and walls. Doing it on your own will increase the risk of facing any sort of electrical wires.

Step no 3: Building a Subfloor

If all the joists are visible on the attic floor, you need to build a subfloor. You can start this process once the ventilation installation and electrical wiring is done. Adding insulation under the panelling of the subfloor will reduce the sound travelling from your attic through the floor.

To build a subfloor, you have to:

  • Snap a small chalk line that marks the centre of the joist towards its full length. The edge of your panels has to sit on the mark.
  • Now lay down the first panel all along with the attic longest wall ¼ of an inch from the wall.
  • The longest edge of the attic panel should run in a parallel direction towards the floor joists.
  • Now drill 2 ½ inch screws right into the floor joists after every 6 inches.
  • Do the installation of the next panel with an almost ¼ inch gap that is in between the existing panel. As you start installing the next row, avoid the placement of end seams on top of one another.
  • Repeat the whole process until the floor is not fully covered.
  • Caulk all the screw heads and seams
Building a Subfloor

Source: Budgetdumpster

Step no 4: Insulate the Attic

For any DIY project, the best and reliable insulation for the attic is the batt insulation with the vapour-retardant facing. This insulation is known to be best for finishing the attic area because it is easy to install and is also flexible. You can easily layer it for additional coverage.

To install the attic insulation you have to:

  • First of all, insert the insulation inside the cavity which is between the joists of the vapour barrier facing the room. Compress the insulation so it can avoid reducing the value of insulation.
  • Now staple the insulation right into the joists as it has been directed by the insulation experts/manufacturer.
  • Continue this process on the attic ceiling and walls.

Step No 5: Installing Drywall and Ceiling

Once you are done with the installation of insulation, now it’s a move towards the wall finishing. You can give your attic conversion a proper shape, by hanging drywall. You need to hang the drywall in a horizontal direction through the exposed drywall and later on secure it with the help of drywall screws. You can finish it by covering screws and seams with some drywall mud.

Step No 6: Pain Attic Walls and Ceiling

To give your attic a proper living space look, you have to paint the watch and drywalls. New drywall has to be primed before you start painting it. After the primer coating, make sure you add it with at least 2 coat of paint for a finished look. Always pick light paint colors for the attic room.

Step no 7: Selecting and Installing Attic Flooring

This is the last step of your DIY attic remodels finishing. In this step, you will choose and install the flooring for the room. Carpeting can be equally a good option as it reduces the sound and even adds extra insulation to your floor.

Last but nt least, dont forget about choosing the best attic ladder and taking proper measurements before installing the attic ladder.


Finally, you can enjoy your finished attic! Don’t forget to decorate it! Your attic should include finished floors, painted walls, and add it with some antique furniture to make the room the living space you need.

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