Arrange your cellar to have an extra room

Arrange your cellar to have an extra room

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To gain square meters without moving, it is possible to use an attic, but also sometimes a cellar. It must still be made healthy and habitable. Then, the guest room, the library, the games room or the home cinema!

Be in tune with the legislation

Authorizations vary by region. Check with your town hall. Because if some ask you for a work permit or a building permit, others prohibit the development of basements when there is a health risk. In a building, you need the agreement of the condominium. In addition, when your project has materialized, call your insurer to let them know that your home now has one more room.

Clean up the place

Poisonous, damp walls… cleaning up the cellar is very important before starting the fitting out. If you suspect the presence of rats (holes in the walls, traces on your belongings), bring in a rat extermination specialist. If the cellar is damp, you will need to have your walls treated, again by contacting a specialized company. The humidity level, in the end, must not exceed 70%. Finally, think about ventilation! Have an extractor installed or, if possible, connect to the VMC in your home.

Drill openings

Even if you plan to make your cellar a very cozy space, you will feel better if a little daylight enters it. There are several solutions for this. Enlarge a basement window, if there is one (a mason can take care of it), install a window on the ceiling to benefit from the light on the ground floor, or a skylight if one of the walls of the cellar communicates with the south facade of the accommodation.

Insulate well

Good insulation is essential to create a comfortable living space. The walls must be insulated (using conventional or ecological insulation), taking care to avoid any thermal bridge, as well as the floor thanks to an insulating film placed under the dry concrete screed. It is only once your cellar is healthy and well insulated that you can take care of the electricity and plumbing, then the finishing touches. Think in particular of some lime-based paints, which let the walls breathe and can be well suited to a room in the basement.