Types of thermal and acoustic insulation for homes

Discover the main thermal and acoustic insulation materials and systems to achieve more efficient, comfortable and sustainable homes.

Comfort inside a home does not depend only on the design or its facilities. A key aspect —and often underestimated— is thermal and acoustic insulation. A well-insulated house is not only more energy efficient, but also offers greater well-being, privacy and quality of life.

Below, we tell you about the main insulation materials and systems used today, their advantages and in which cases it is appropriate to use them.

At FILA we have been working for decades on constructive solutions that improve energy efficiency, both in traditional construction and in industrialized housing. This experience has allowed us to verify which materials work best for each situation.

1. Mineral wool (rock wool and glass wool)

Mineral wool is one of the most used insulations in homes due to its balance between thermal, acoustic performance and price.

Advantages:

• Excellent thermoacoustic performance.
• Fire resistant.
• Good durability over time.
• Allows the wall to breathe (prevents condensation).
• It is ideal for interior partitions, false ceilings and facade cladding.

2. Expanded polystyrene (EPS) and extruded polystyrene (XPS)

Both materials are frequently used in external insulation systems (SATE) or on roofs.

Features:

• Great thermal insulation capacity.
• Lightweight and easy to install.
• XPS stands out for being more resistant to moisture.
• If you are looking for energy efficiency and a good price, it is a very common option for new construction.

3. Sprayed polyurethane (PUR or PIR)

This insulation is applied in situ forming a continuous layer without joints, which reduces thermal bridges.

Strengths:

• Excellent watertightness.
• Very good thermal insulation with little thickness.
• Ideal for roofs, chambers and areas that are difficult to access.
• In projects where space efficiency is paramount, it is one of the most used materials.

4. Cellulose

Produced from treated recycled paper, blown cellulose is a sustainable, high-performance option.

Benefits:

• Very good thermal and acoustic insulation.
• Ecological material with a low environmental footprint.
• Good humidity regulation.
• Perfect for renovations and for those looking for more natural solutions.

5. Natural cork

Cork is an ecological insulator with excellent acoustic performance.

Outstanding advantages:

• Superior acoustic insulation to many synthetic materials.
• Good thermal performance.
• Renewable and biodegradable.
• Resistant to fungi and moisture.
• In addition to being functional, it offers a warm and pleasant aesthetic if used exposed.

Which system should you choose for your home?

There is no universal insulator, and the choice will depend on the climate, the type of building, the budget and the objectives of the project. However, if you are looking for an ideal balance between thermal efficiency, acoustic comfort and sustainability, blown cellulose presents itself as a prominent option:

• Ecological material, made from treated recycled paper.
• Excellent thermal and acoustic insulation.
• Helps regulate indoor humidity, creating a healthier environment.
• Perfect for renovations and homes that seek a more sustainable and environmentally friendly approach.

At FILA, our industrialized construction team analyzes each project to ensure that the choice of insulation provides comfort, efficiency and sustainability, and in many cases, cellulose becomes the preferred option to achieve a healthier and more efficient home.

Conclusion

Insulation is an investment that pays for itself over the years. A well-insulated home maintains temperature better, reduces energy bills, improves acoustic comfort and helps create healthier spaces. At FILA, with more than 75 years of experience and a clear commitment to high-performance construction systems, we consider that the thermal and acoustic envelope is an essential pillar for achieving efficient, comfortable and durable homes.

Types of thermal and acoustic insulation for homes

20.02.26

Discover the main thermal and acoustic insulation materials and systems to achieve more efficient, comfortable and sustainable homes.

Comfort inside a home does not depend only on the design or its facilities. A key aspect —and often underestimated— is thermal and acoustic insulation. A well-insulated house is not only more energy efficient, but also offers greater well-being, privacy and quality of life.

Below, we tell you about the main insulation materials and systems used today, their advantages and in which cases it is appropriate to use them.

At FILA we have been working for decades on constructive solutions that improve energy efficiency, both in traditional construction and in industrialized housing. This experience has allowed us to verify which materials work best for each situation.

1. Mineral wool (rock wool and glass wool)

Mineral wool is one of the most used insulations in homes due to its balance between thermal, acoustic performance and price.

Advantages:

• Excellent thermoacoustic performance.
• Fire resistant.
• Good durability over time.
• Allows the wall to breathe (prevents condensation).
• It is ideal for interior partitions, false ceilings and facade cladding.

2. Expanded polystyrene (EPS) and extruded polystyrene (XPS)

Both materials are frequently used in external insulation systems (SATE) or on roofs.

Features:

• Great thermal insulation capacity.
• Lightweight and easy to install.
• XPS stands out for being more resistant to moisture.
• If you are looking for energy efficiency and a good price, it is a very common option for new construction.

3. Sprayed polyurethane (PUR or PIR)

This insulation is applied in situ forming a continuous layer without joints, which reduces thermal bridges.

Strengths:

• Excellent watertightness.
• Very good thermal insulation with little thickness.
• Ideal for roofs, chambers and areas that are difficult to access.
• In projects where space efficiency is paramount, it is one of the most used materials.

4. Cellulose

Produced from treated recycled paper, blown cellulose is a sustainable, high-performance option.

Benefits:

• Very good thermal and acoustic insulation.
• Ecological material with a low environmental footprint.
• Good humidity regulation.
• Perfect for renovations and for those looking for more natural solutions.

5. Natural cork

Cork is an ecological insulator with excellent acoustic performance.

Outstanding advantages:

• Superior acoustic insulation to many synthetic materials.
• Good thermal performance.
• Renewable and biodegradable.
• Resistant to fungi and moisture.
• In addition to being functional, it offers a warm and pleasant aesthetic if used exposed.

Which system should you choose for your home?

There is no universal insulator, and the choice will depend on the climate, the type of building, the budget and the objectives of the project. However, if you are looking for an ideal balance between thermal efficiency, acoustic comfort and sustainability, blown cellulose presents itself as a prominent option:

• Ecological material, made from treated recycled paper.
• Excellent thermal and acoustic insulation.
• Helps regulate indoor humidity, creating a healthier environment.
• Perfect for renovations and homes that seek a more sustainable and environmentally friendly approach.

At FILA, our industrialized construction team analyzes each project to ensure that the choice of insulation provides comfort, efficiency and sustainability, and in many cases, cellulose becomes the preferred option to achieve a healthier and more efficient home.

Conclusion

Insulation is an investment that pays for itself over the years. A well-insulated home maintains temperature better, reduces energy bills, improves acoustic comfort and helps create healthier spaces. At FILA, with more than 75 years of experience and a clear commitment to high-performance construction systems, we consider that the thermal and acoustic envelope is an essential pillar for achieving efficient, comfortable and durable homes.