Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?

Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?

Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?

Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?

Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?

Hi, residential existing buildings in France (H3) take major renovations (walls, ceilings, floors, airtightness, MV) do they have to fulfill some minimum requirements (U values, or total heating demand)? Can you provide me these values with a reference?