How to know if your roof needs renovating?

What is a roof renovation?

A roof renovation is the complete set of works aimed at restoring, repairing, or replacing the roofing of a building to ensure its durability, watertightness, and thermal insulation. This is a crucial intervention to preserve the structural integrity and value of any property.

5 signs your roof needs renovating

Your roof is your home's first line of defence against the weather. A roof in poor condition can lead to costly damage if not addressed quickly. Here are the 5 signs to watch for.

1. Broken or missing tiles or slates

Cracked, displaced or missing tiles or slates expose the roof structure to moisture. After every storm, visually inspect your roof or call a professional.

2. Moss or vegetation growth

Moss retains moisture and accelerates material degradation. A preventive treatment every 3-5 years helps avoid premature complete replacement.

3. Damp patches on ceilings

Brown stains or rings on your ceiling are the classic sign of water infiltration. Don't wait to act: water infiltrating the roof structure can lead to serious structural damage.

4. Visible roof sag

A sagging roof indicates a structural problem with the framework. This is an emergency: contact a qualified professional immediately.

5. Roof over 25 years old

Natural slates last 75-100 years, tiles 30-50 years, and zinc 80-100 years. But a roof over 25 years old deserves a full inspection even in the absence of visible signs.

Roofing materials comparison

Material	Lifespan	Indicative price/m²	Maintenance
Natural slate	75-100 years	€150-300	Low
Terra cotta tile	30-50 years	€80-180	Medium
Zinc	80-100 years	€120-250	Low

FDM ENERGIE offers a complete free and no-obligation diagnostic. Contact us to schedule a visit in Paris or Île-de-France.