Glasswool Insulation
Glasswool Insulation – Reliable, Cost-Effective Performance for NZ Homes
Glasswool insulation is one of New Zealand’s most trusted and widely used insulation products, offering excellent thermal performance at an affordable price. Made from spun glass fibres bonded together to form a soft, durable insulation blanket, glasswool is ideal for ceilings, walls, and underfloors. It significantly reduces heat loss, improves comfort, and delivers long-term energy efficiency. When installed correctly, glasswool insulation typically lasts 50 years or more, maintaining its thermal performance and R-value throughout the life of the home.
Health Benefits
Modern glasswool is engineered to be softer, safer, and lower in dust than older-style fibreglass products. Many brands are low-irritant and low-VOC, helping support healthier indoor air. Glasswool is naturally resistant to mould, moisture, and pests, reducing the risks associated with damp, cold homes.
Sustainability
Most glasswool insulation contains 50–80% recycled glass, helping reduce waste and support sustainable manufacturing. Its long lifespan and stable performance mean fewer replacements, creating a smaller environmental footprint over time. Glasswool also helps homes use less energy, reducing carbon emissions year-round.
Technical Performance
Glasswool delivers excellent thermal resistance and effective acoustic absorption. It is lightweight, flexible, easy to install, and provides consistent coverage. It does not absorb moisture, slump, or break down, ensuring reliable performance and improved comfort in all New Zealand climate zones.
