How to Reduce Your Energy Bill Through Thermal Insulation

Why Is Insulation the Most Profitable Investment in Building?

Studies from the International Energy Agency show that a well-insulated building consumes on average 40 to 60% less energy than an equivalent uninsulated building.

Priority Areas for Heat Loss Treatment

• Roof and attic: 25–30% — heat rises, so this is the absolute priority
• Walls: 20–25% — particularly north- and east-facing facades
• Floors: 7–10% — especially crawl spaces and ground floors on bare earth
• Windows and doors: 10–15% — single glazing performs very poorly

Step 1: Insulate the Attic First

Attic insulation consistently offers the best cost/benefit ratio. A 200mm Rebrick textile insulation roll in double cross-layer (R = 5.5 m²·K/W) can alone reduce total building heat losses by 15 to 20%.

Calculate Your Potential Savings

For a 120 m² house consuming 15,000 kWh/year, complete insulation can save:

• Roof alone: ~2,000 kWh/year
• Roof + walls: ~5,000 kWh/year
• Complete renovation: ~7,500 kWh/year

Conclusion

Reducing your energy bill starts with properly insulating your building. Rebrick insulants offer the ideal combination of thermal performance, environmental respect, and ease of installation. Request your free thermal assessment from our team.