Buildernew walls and partitions
Any new wall reduces the useful area of the apartment declared in the documents. This effect is especially noticeable in new buildings, which are rented out without partitions, so that the owners themselves decide how many separate rooms they will have. Even if you build a plasterboard partition, the thickness of which is 12.5 mm as standard, you should take into account the thickness of the metal profile frame.
Let’s take the simplest structure – a metal frame with heat and sound insulation inside in the form of mineral wool, sheathed with plasterboard on both sides. The thickness of such a wall is 12.5 + 12.5 + 100 (profile) = 125 mm or 12.5 cm.A little, we agree, but if there are several such partitions, the effect of reducing the area will be noticeable.
The thickness of the tongue-and-groove plates is at least 80 mm, and they do not need plaster for leveling. The standard thickness of aerated concrete blocks for partitions is 100 and 150 mm. The thickness of the masonry in half a brick is 120 mm. It is without soundproofing and fine finishing.
Wall alignment, plaster
In case of leveling the walls, a layer of plaster will take 3-4 cm from each side of the wall. The more noticeable the flaws on the wall surface, the thicker the layer of plaster will have to be applied to get rid of them. In old houses and apartments, new plaster is very often applied on top of the old one, because you don’t want to strip the walls to the ground. Here’s another minus of at least 1-2 cm on each side of the wall, even taking into account the fact that the new layer will be thinner on the old plaster. Plasterboard wall cladding in order to level the surface – minus 12.5 mm + mortar or frame thickness, that is, there is no way to save space, there is just less work with plaster.
Sewer riser sheathing, ohheating, water supply, gas pipes
Many homeowners decide to hide ugly and spoiling risers, gas and water pipes. Most often this is done by arranging a drywall box on a profile frame. Moreover, in some cases, pipes can go along the entire wall, especially in the kitchen, respectively, it is completely sheathed. Of course, niches and shelves can be equipped in such a box, however, in general, the usable area can immediately decrease by half a meter due to the plating of the riser in the bathroom, for example.
Soundproofing and internalwall insulation
There are many materials for noise insulation. On average, the thickness of the sound insulating structure is from 7 to 12 cm, taking into account the sheathing and finishing. Let’s take the maximum thickness of soundproofing at 12 cm, imagine that it goes around the entire perimeter of a small bedroom with an area of 10 “squares”. Loss of usable space can reach 1 m2.
Internal wall insulation can also be carried out using various materials, of different thicknesses – from ultra-thin, recently appeared liquid thermal insulation with a thickness of 1 mm to the usual mineral wool, EPS and expanded polystyrene, the thickness of which can be 50-130 mm.
Finish orfabric, wall panels, the presence of many decorative elements
It seems that such finishing work cannot significantly affect the usable area of an apartment or house. However, tile + adhesive + bathroom waterproofing = 12-15 mm thick. Wall panels also come in various thicknesses, which can be approximately 10–30 mm. Therefore, all these finishing materials also affect the final area of the apartment and house..
Let us state: experts have calculated that as a result of overhaul of a three-room standard apartment with an area of 80 “squares”, one can lose 1-3 m2 area. In a new building, where all partitions will be erected and finishing “from scratch” will be carried out, as a result, you can be left without even 5-10 “squares”.