The number of kg per m3 for a comfortable sofa bed should be at least 30. This data corresponds to the density of the foam in your sofa, an essential criterion for assessing its comfort. Density is the strength of the material and is what determines whether the user will "sink" into the sofa or not. It thus defines the support provided.
Kg per m3: the density of your comfortable convertible sofa
For a sofa bed , as for a traditional mattress, we talk about density to characterize the comfort of the seat and the bed. The higher the density, the firmer the support. Be careful, however, because the density of the seat and the backrest can be different. And for good reason, the seat supports a greater weight than the backrest of your sofa bed: to ensure your comfort, this density must therefore be higher than that of the backrest. A good seat density is generally around 30 to 35 kg per m3, while for the back, 20 to 25 kg per m3 is a more than sufficient value.
The density of a sofa: don't forget the bedding
When considering the density of a sofa bed , it is also important to consider the density of the sleeping mattress. Depending on the structure, the mattress can be completely separate from the sofa seat. This is the case with the Rapido system , for example: you have a real mattress in addition to your sofa seat and backrest. For a mattress, a good density generally corresponds to 50kg per m3 .
But this also depends on the user's weight: the higher it is, the higher the density must be to provide good support. For other models, the bed and seat of the convertible sofa are a single element. This is the case, for example, with the clic clac or the bz. This means that the density of your seat will be the same as that of the mattress.
Does this change for a large sofa? No, the logic is exactly the same for a comfortable convertible corner sofa.
- The minimum recommended density for a comfortable sofa bed is 30 kg/m3, which directly influences comfort and support.
- The density of the seat should be higher than that of the backrest, with ideal values of 30 to 35 kg/m3 for the seat and 20 to 25 kg/m3 for the backrest.
- For the sleeping mattress, a density of around 50 kg/m3 is recommended, but it should be adjusted according to the user's weight.
- In some models, such as the clic-clac or the bz, the seat and the sleeping mattress share the same density, while other systems, such as the rapido, have a separate mattress.
- The same density logic applies to convertible corner sofas, with no variation in comfort criteria.
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