Fiberglass under-roof insulation

Secure payment
Free shipping
14-day returns
Support 24/7

Sorry, there are no products in this collection.

Product collection detail

Transform your attic into a comfortable and eco-friendly living space with our collection of roof insulation glass wool. At Ombre Intérieur, we know that insulating your loft is key to reducing your energy bills while creating a warm and quiet atmosphere. Our selection of glass wool, specially designed for sloping roofs and inclined ceilings, combines thermal and acoustic performance for a cozy interior all year round. Whether you are renovating an old house or building a modern nest, these insulation solutions are essential for optimizing your roof space. Discover products that combine durability, ease of installation, and environmental respect for immediate comfort and a profitable investment.

Why choose our roof insulation glass wool?

Roof insulation is a major challenge for any interior decoration project. Glass wool, thanks to its fibrous structure, offers exceptional thermal resistance (expressed as R-value) and remarkable acoustic absorption. Our collection is designed to meet RT 2020 and RE 2020 standards, ensuring optimal energy performance. Explore products that adapt to all types of roof structures, whether traditional or industrial, and enjoy enhanced comfort without sacrificing aesthetics.

The concrete benefits of glass wool for your loft

  • Enhanced thermal insulation: Reduce heat loss in winter and keep cool in summer, with R-values ranging from 5 to 8 depending on thickness.
  • Acoustic comfort: Dampen external noises (rain, wind, traffic) and internal sounds (footsteps, conversations) for a peaceful space.
  • Ease of installation: Our rolls and panels are lightweight and flexible, easily cut to fit sloping roofs, with quick setup even for DIY enthusiasts.
  • Moisture resistance: Treated to resist condensation, it prevents mold and preserves indoor air quality.
  • Eco-friendly and durable: Made from sand and recycled glass, it is recyclable and contributes to a greener home.

How to choose the right roof insulation glass wool?

For effective insulation, several criteria must be considered. Density, thickness, and type of facing (vapor barrier or not) directly influence the result. Our collection offers solutions for all needs, whether you are insulating unused or converted lofts. Find the ideal product based on your budget and energy goals.

Key criteria for successful roof insulation

  • Thickness and thermal resistance (R-value): For optimal insulation, aim for an R ≥ 6 for converted lofts. Our products offer thicknesses from 200 to 300 mm.
  • Type of vapor barrier: An integrated vapor barrier (aluminum or kraft) is recommended to prevent condensation in sloping roofs. Choose according to the humidity in your region.
  • Dimensions and packaging: Rolls for large areas, panels for complex zones. Check the width (often 120 cm) for a perfect fit between rafters.
  • Fire rating: All our products are classified A1 or A2 (non-combustible), ensuring enhanced safety.

Installation tips for your roof insulation glass wool

Proper installation is crucial to maximize performance. Before starting, ensure your roof is waterproof and ventilation is adequate. For sloping roofs, fix the glass wool between the rafters, taking care not to compress it. Use a vapor barrier on the interior side to prevent moisture. Opt for complementary accessories such as under-roof membranes or adhesive tapes for a perfect finish. Our Ombre Intérieur team guides you with detailed technical sheets for each product.

Mistakes to avoid during roof insulation

  • Do not leave gaps between panels: thermal bridges reduce efficiency.
  • Forgetting the vapor barrier: this can lead to condensation and structural damage.
  • Compressing the glass wool: this reduces its insulating power. Respect the recommended thickness.
  • Neglecting ventilation: air circulation under the roof is essential to prevent moisture.

Why trust Ombre Intérieur for your insulation?

Since our founding, we have selected quality products for interior decoration and furnishing. Our roof insulation glass wool collection comes from recognized brands such as Isover, Knauf, or Rockwool, guaranteeing certified performance. We offer free delivery for orders over €100, to support your projects with no hidden costs. Explore our range and transform your loft into a cozy, economical, and environmentally friendly space.

Ready to improve your thermal and acoustic comfort? Discover our selection of roof insulation glass wool at ombreinterieur.fr and benefit from personalized advice for your project. Opt for insulation that combines performance and serenity, and turn your attic into a true haven of peace. Our customers also appreciate the Sous Verre 50X70 collection for its unique style. Our Customizable Natural Slate Glass Frame Round or Square Glossy or Matte for Interior Decoration pairs perfectly with this collection. To go further, discover how to clean wool throws without damaging them on our blog.

Frequently Asked Questions

What is the thermal performance of fiberglass insulation under roofing?
Roof insulation fiberglass offers excellent thermal performance thanks to its fibrous structure that traps air. Its thermal resistance (R-value) varies depending on thickness, but it significantly reduces heat loss through the roof, resulting in energy savings and increased comfort in both winter and summer.
How to install fiberglass insulation under the roof in a finished attic.
Installing fiberglass insulation under the roof in finished attics is typically done between the rafters or trusses, ensuring an air gap is left for ventilation. It is important to cut the panels or rolls to the exact dimensions and secure them firmly without compressing them, to preserve their insulating properties. A vapor barrier may be necessary on the interior side to prevent condensation.
Is fiberglass roof insulation effective for acoustic insulation?
Yes, fiberglass insulation under the roof is very effective for acoustic insulation, as its fibers absorb sound waves. It reduces airborne noise (such as rain or wind) and impact noise, creating a quieter indoor environment. For optimal performance, it is recommended to combine thermal insulation with sufficient thickness for acoustics.
What are the criteria for choosing a suitable glass wool insulation for my roof structure?
To choose a suitable glass wool insulation for your roof, consider the spacing of your rafters or trusses, the available thickness, and the roof pitch. Products are available in rolls or panels, with varying densities and R-values. Also ensure the product complies with current standards (RT 2020/RE 2020) and includes a vapor barrier if necessary.
Free ShippingMainland France
Secure PaymentCB, PayPal, Apple Pay
Satisfied or RefundedReturns within 14 days
Responsive Customer ServiceResponse within 24h