The Content Of The Article:

The vapor barrier is an effective installation to prevent walls and materials from deteriorating due to water condensation, which is very important in a kitchen. Moisture can lead to mold, fungi and the proliferation of insects. Its usefulness is indisputable, but what does a kitchen vapor barrier look like and where and how does it install it?

Utility of a kitchen vapor barrier

Condensation is very strong in a kitchen. It comes mainly from the cooking of food and it is materialized by droplets of water on the walls. The presence of humidity in a room is the ideal terrain for the proliferation of molds, fungi and other bacteria. In addition, some harmful insects, such as cockroaches, for example, breed more quickly in a humid environment. This is obviously not compatible in a kitchen in which the hygiene must be irreproachable.

We also install a vapor barrier in the bathrooms, wet rooms, attics or even covered pools.

Laying a kitchen vapor barrier

The vapor barrier must be installed by a professional kitchen designer to ensure maximum sealing.

The vapor barrier is simply a layer that acts as insulation, in addition to the existing insulation. The films are placed successively by gluing or welding to ensure the continuity of the insulating material. The vapor barrier is always placed inside, always on the heated side of the walls, between the coating (paint, tiles...) and the existing insulation. It is therefore wise to place it before creating a kitchen or during renovation of a kitchen.

Warning! The vapor barrier is not enough

The vapor barrier alone is not enough! It must be associated with a good ventilation as VMC (controlled mechanical ventilation) or kitchen hood to optimize the evacuation of moisture and the renewal of air.

The kitchen vapor barrier may consist of:

  • aluminum foil, the most common material
  • Polyethylene
  • of polyester
  • PVC wallpaper

How to choose a kitchen vapor barrier?

In professional jargon, the water resistance of the vapor barrier is expressed in "Sd", a coefficient that evaluates its performance. The higher the coefficient "Sd", the more the vapor barrier is waterproof.

The materials are often sold in the form of rolls and the price of a vapor barrier is calculated per m². Its price varies according to the dimensions, the chosen material and its coefficient "Sd". Before'buy a vapor barrier, it is necessary to calculate the rate of hygrometry (humidity of the air) and the possibilities of installation.


Video Instruction: Vapor Barriers: Need one or not?