Insulation is a crucial component of any energy-efficient building, playing a vital role in maintaining indoor comfort and reducing energy consumption. Among the many insulation options available, insulation rolls remain one of the most popular choices thanks to their ease of installation, affordability, and effectiveness.

In this guide, we explore the main types of insulation rolls available in the UK, including the most sustainable modern option: recycled PET polyester eco-friendly insulation rolls from Green Loft.

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1. Fibreglass Insulation Rolls

Fibreglass insulation is one of the most widely used insulation materials. It is made from fine glass fibres and is available in rolls and batts. It offers decent thermal and acoustic performance and is commonly used in lofts, walls, and floors.

✅ Fibreglass Insulation Roll Benefits

• Cost-effective

• Easy to install

• Good thermal performance

• Widely available

❌ Fibreglass Insulation Roll Disadvantages

• Can irritate skin, eyes, and lungs

• Fibres can become airborne

• May settle over time, reducing effectiveness

• Not environmentally friendly

• Disposal and manufacturing have a high environmental impact

While fibreglass remains popular, many homeowners now seek itch-free and environmentally responsible alternatives.

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2. Mineral Wool Insulation Rolls

Mineral wool (also known as rock wool or slag wool) is made from melted stone or industrial waste products. It offers a higher density and better fire resistance than fibreglass, making it ideal for soundproofing and safety-critical areas.

✅ Mineral Wool Insulation Roll Benefits

• Higher R-value (better insulation than fibreglass)

• Excellent fire resistance

• Strong soundproofing qualities

❌ Mineral Wool Insulation Roll Disadvantages

• More expensive than fibreglass

• Heavier and harder to install

• Can still irritate skin and lungs

• Higher embodied carbon than eco materials

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3. Cellulose Insulation Rolls

Cellulose insulation is made from recycled paper products, primarily newspaper, and treated with fire retardants. It is a popular eco-friendly option for thermal insulation.

✅ Cellulose Insulation Roll Benefits

• Made from recycled materials

• High thermal performance

• Good for reducing air leaks

• Fire-retardant treated

❌ Cellulose Insulation Roll Disadvantages

• Can absorb moisture

• Risk of mould if ventilation is poor

• Can settle over time

• Messier to install than roll insulation

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4. Recycled PET Polyester ECO Itch-Free Insulation Rolls (Best Eco-Friendly Choice)

This is where Green Loft leads the way. Recycled PET polyester insulation is made from repurposed plastic bottles, transforming waste into high-performance, sustainable insulation.

Unlike fibreglass or mineral wool, eco polyester insulation is completely itch-free, hypoallergenic, and safe to handle. It’s growing rapidly in popularity among environmentally conscious UK homeowners.

✅ Recycled PET Polyester Insulation Roll Benefits

• Made from recycled plastic (PET bottles)

• 100% itch-free and non-irritating

• Safe for skin, lungs, pets, and children

• Resistant to mould, mildew, and pests

• Excellent thermal and acoustic performance

• Long-lasting and durable

• Low environmental impact

• Ideal for lofts, walls, and floors

❌ Recycled PET Polyester Insulation Roll Disadvantages

• Higher upfront cost than fibreglass

• Slightly lower availability than traditional materials

At Green Loft, our recycled polyester eco insulation rolls offer one of the best balances of performance, safety, and sustainability available in the UK today.

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5. Spray Foam Insulation (Alternative Option)

Although not supplied as traditional rolls, spray foam insulation expands to fill cavities and create an airtight seal. It’s available in open-cell and closed-cell forms.

✅ Spray Foam Insulation Benefits

• Creates an airtight seal

• High thermal efficiency

• Moisture resistant (closed-cell)

❌ Spray Foam Insulation Disadvantages

• Expensive

• Requires professional installation

• Contains chemicals that may affect indoor air quality

• Difficult to remove once installed

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Which Insulation Roll Is Best for UK Homes?

The best insulation roll depends on your priorities:

For homeowners seeking eco-friendly, safe, durable, and high-performance loft insulation, Green Loft’s recycled polyester insulation rolls are the clear winner.

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Final Thoughts: The Smart Eco-Friendly Choice

Choosing the right insulation roll affects:
✔ Your energy bills
✔ Indoor comfort
✔ Air quality
✔ Noise levels
✔ Environmental impact
✔ Long-term property value

While traditional options still have their place, recycled PET polyester eco insulation rolls from Green Loft represent the future of home insulation — offering outstanding performance without the health or environmental drawbacks of older materials.

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💚 Ready to upgrade your loft with eco-friendly insulation?
Explore Green Loft’s recycled polyester itch-free insulation rolls, available in over 30 sizes with fast UK delivery.