Instructions for the loft conversion

Living space is becoming increasingly attractive, but at the same time is also expensive and limited. Therefore, many homeowners tend to loft conversion. If the roof is only adapted to the extent of insulation specified by the Energy Saving Ordinance, the loft conversion is a typical job for experienced DIY enthusiasts. That is why you will also receive extensive instructions for attic conversion here.

The loft conversion in comparison

Living space is becoming scarcer and therefore more expensive. At the same time, there is a trend towards more living space. In addition, the development means that more and more often several generations of families live under one roof. For the housing extension, there are various options to choose from.

  • Keller Construction
  • house cultivation
  • Attic

Kellerausbau and new construction (extension)

The basement is usually very expensive, because he designed as a conventional cellar brings many disadvantages. Thus, many of these disadvantages must be neutralized structurally, since for rooms designated as living space tougher rules apply. So the basement is very expensive. It is similar in house cultivation. In principle, a complete new building must be designed, and valuable green spaces are sealed.

The loft conversion

In the loft conversion, the expansion costs are on the other hand in a bearable framework. In addition, the associated construction measures lead to a strong energy savings, because the roof is to insulate according to the Energy Saving Ordinance. For the actual loft conversion then only suitable material is needed, which is usually the equally favorable plasterboard.

The roof insulation

The insulation of the roof is still the biggest challenge. The easiest way is the loft conversion but with a roof, because the roof construction is as follows.

  • roof
  • insulation
  • vapor barrier
  • Plasterboard or other panels for interior work

The difficulty with a cold roof, however, is that the insulation structure must be permeable, because the moisture is transported away via the roof ventilation under the roof. If you meet the requirements, you should therefore perform the roof insulation as a warm roof. In addition, the warm roof is also standard for new buildings.

Step-by-step instructions for attic conversion

  • Plasterboard
  • possibly battens for slatting
  • Drywall screws
  • Plasterboard spatula
  • Silicone for expansion joints
  • Electrical installation materials
  • edgings
  • joint reinforcement
  • Cordless Screwdriver
  • drilling machine
  • Circular hole drill
  • Saw or cutter knife
  • Iron profile for cutting / sawing
  • Trowel or trowel for filling

1. Preparatory work

At first, the roof insulation was already on. Make sure that the insulation according to your roof (hot or cold roof) is provided with vapor barrier or vapor barrier. Of course, the planned installation of roof windows and dormer windows should have been done before.

If the insulation is not yet strong enough (18 to 20 cm is standard), you can rafter with battens and reinforce the insulation accordingly. Then follows the vapor barrier or vapor barrier.

2. The loft conversion with plasterboard

Now you can start with the removal of the plasterboard. In the plasterboard joints are incorporated. If you had to cut off the side with the joint, you must chamfer the cut edge. Then mount them in abutment with the previously installed plasterboard panel. Outside (on wall connections, etc.) you get an expansion joint of about 1 cm.

To set out sockets and switches, measure the gypsum boards and cut out the circular holes with the circular hole saw on the drill. Make sure that the underlying insulation is protected and there are no sound or thermal bridges.

3. The filling and sanding of the new attic

Now the plates must be filled with each other. For this purpose, the professional distinguishes four different quality levels, which you achieve by alternately filling and grinding. In wide joints insert a reinforcement, which is filled in. This will prevent cracks occurring later in the joint. Depending on the desired quality level, you now have to alternately grind and spatulate differently.

Tips & Tricks

For a long time, plasterboard has not only been more in sheet form. They are also available as panels with a composite system, similar to tongue and groove. Although you need significantly more plasterboard panels, however, each subsequent plasterboard element is additionally stabilized by the connecting groove.

If you still need to insulate your roof or install a dormer window, see [Dormer installation] or [Damming the roof structure] for instructions and guides.

Video Board: TeleBeam Loft Conversion - The Process