Making the insulation of a roof from outside Retrouvez l'article original Faire l'isolation d'une toiture par l'extérieur - Isolation - Bricolage - Pratique sur Pratique.fr

If you want to keep the volume of your attic, you can make a roof insulation from the outside. Provide insulation from the outside is a big task, but can make significant savings.A rather do on sunny days!



The principle of external insulation

The insulation of a roof from the inside is done by applying an insulation under the rafters of the frame, inside the attic. The external insulation is done by placing sheets of insulation to the rafters under the roof covering (tiles, slates ...). This system has the advantage of not taking up space in the attic and then to leave their land as possible.

In which case implementing external insulation?

The insulation of a roof from outside is advised in case of a construction or major renovation. It should then start by removing the cover of the roof, clean and treat the rafters and replace those damaged. The installation of insulation is then.

Roof insulation: materials and process

Connection panels

The external insulation can be made with extruded polystyrene panels or panels lined with glass wool . The method most often used for insulating a roof is Sarking which to choose:
- The thickness of the insulation based on thermal performance sought;
- The size and type of insulation;
- Finishing the interior face.

The insulation of a roof can be done by projecting the bulk of cellulose or hemp from the rafters on a film Dust. A rain screen, then double battens are then laid.