Attic Insulation Costs: Prices, Quotes, and Key Factors Explained

Investing in attic insulation is a wise choice for energy efficiency. A poorly insulated attic can lose up to 30% of your home's heat through the roof. Whether insulating a converted or lost attic, you'll enjoy substantial long-term savings and enhanced comfort. As experienced home improvement experts, we'll guide you on securing effective insulation without overspending.

What Budget to Expect for Professional Attic Insulation

Insulation costs differ for lost and converted attics. For lost attics, expect 20 to 60 euros per square meter, including materials and labor—the simplicity of the work keeps prices lower. Converted attics range from 40 to 70 euros per square meter for insulation installation alone; add costs for fittings and finishes. Exterior insulation averages 100 euros per square meter due to extensive roof work.

Your choice of insulation material drives the biggest variation, from 5 to 90 euros per square meter.

• Glass wool, the most budget-friendly, costs 5 to 15 euros per square meter.
• Rock wool ranges from 7 to 20 euros per square meter.
• Cellulose wadding: 20 to 40 euros per square meter.
• Sheep's wool: around 25 to 30 euros per square meter.
• Hemp wool: 25 to 35 euros per square meter.
• Linen: 30 to 35 euros per square meter.
• Wood fiber: 35 to 40 euros per square meter.
• Polyurethane: 55 to 65 euros per square meter.
• Cork, highly effective but premium: 80 to 90 euros per square meter.

Comparative Table of Insulation Material Costs

Factors Influencing Professional Attic Insulation Budgets

Professional installation costs depend on several key factors:

• The attic type (converted or lost);
• Accessibility and roof pitch challenges;
• Chosen material and insulation method (interior or exterior);
• Local labor rates and region.

Budget 30 to 50 euros per hour, or higher for complex access. This investment ensures durable, high-quality results from certified pros.