Attic insulation: our advice

Winter is approaching and it is time to look into insulating your home. Indeed, with poor insulation, the well-being of the occupants will be spoiled with an additional increase in the energy bill in perspective. In addition, 30% of economic losses are due to an uninsulated roof. It is therefore more than important to undertake development work to conserve heat in winter.

Everything you need to know before insulating the attic

You should know that a bad roof does not allow you to preserve energy comfort and make energy savings. It is therefore necessary, if this has not been done, to plan an investment to insulate the attic space under the roof. Insulation is also necessary in order to obtain significant thermal performance. That being said, you must be aware of the regulatory provisions in force, particularly since the changes of January 1, 2018 on:

  • existing residential or non-residential buildings;
  • the thermal characteristics and energy performance of existing buildings;
  • applications to new constructions less than 50 m or extensions of small areas (individual or collective houses);
  • exceptions to buildings over 1000 m built after 1948;
  • the increase in thermal performance requirements for opaque walls (in contact with the outside);
  • the regulation of ventilation according to the parameters of the occupancy of premises in tertiary buildings;
  • the requirements on the solar factor in the event of replacement of solar protection (replacement of bays or curtain facades for tertiary buildings).

Help with insulating lost attics

Financial assistance for insulating unused attics exists for households depending on their income. Above all, in order to better reinforce the insulation of the house, you should know that a house built before 1980 is unlikely to have been correctly insulated. Between 1980 and 1990, insulation became widespread, but the standards of the time are now largely outdated. It was only from 1990 that walls and roofs began to be well insulated, but not all. Other details can help detect poor insulation.

To carry out the work, it is necessary to think about the programattic insulation €1 as part of the Energy Solidarity Program. In practice, the modalities are as follows:

  • Beneficiaries must have an individual house and be owners;
  • They must have uninsulated attics or insulation of more than 15 years;
  • Assistance for insulation at €1 only for unconvertible attics, not used as housing;
  • Valid for low-income households, therefore eligibility based on the occupants’ reference tax income;
  • Aid of a symbolic €1 to insulate 70 m of attic space;
  • Add €10, per additional meter.

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