Living under the roof is interesting with good planning. For finished attics, observe the applicable fire protection ordinances, the thermal insulation according to relevant local and regional ordinances, and noise protection.

However, it is also important to consider in advance what the purpose of the finished attic will be and what criteria it must fulfill. If you want to finish the attic later, you should still provide connections for electricity, water and sewer and plan the position of the steps.

Before you start building, talk to an expert. The roof framework should be checked for freedom from pests and a suitable roof design must be selected. In addition, you need to clarify the statics regarding the installation of heavy separating walls.

Additional tips

Building materials

For finishing an attic, gypsum board or fiber cement plates (fire protection, heat storage, mass per unit area).

• Advantage of gypsum board: ready for painting or wallpaper immediately upon installation.
• Modern or rustic effects are possible with wood paneling.
• Caution: Normal paneling does not offer the fire protection of gypsum board; it must either be significantly thicker or be applied to gypsum board.
• We recommend that you let experts compute and specify the materials for thermal insulation and noise insulation.
• Plan venetian blinds or roller shutters for sun protection (see section Sun protection) 
• With a well-planned arrangement of windows, air can circulate well.
• Caution: Wood in the attic (beams, rafters and any type of slats) must be impregnated.
• Plan adequately large ventilation cross-sections. This improves room climate in the summer.

Thermal insulation

About 20 - 30 % of heat loss escapes via the roof. Therefore thick insulation pays off here.  Recommended overall insulation thickness: at least 24 - 30 cm. The material is inserted between slats and cross pieces. These are the most common forms of insulation:

Heavy-duty roof insulation without back ventilation (insulation is inserted between slats and cross pieces without back ventilation)

Heavy-duty roof insulation with back ventilation (space remains between the insulating material and the roof tiles for back ventilation)

Tip: If you are building your house and think that you might one day utilize the loft area, then provide the attic walls with outside insulation and build the inside with heavy building materials.

Air tightness

Possible air leaks can occur especially at the junction of the roof and the wall. Leaks can cause significant energy losses and uncomfortable drafts. Exiting air can cause condensation and the moisture can damage insulation and the complete structure (see section Air-tightness).