Welcome to Thermguard – South Africa’s original cellulose fibre insulation, since 1984. Four times denser than glass fibre, it fills every gap your roof has, cutting your energy bill in winter and summer alike.
Free assessment. Professional installation. Product guarantee. Get your quote today.
Thermguard has been helping South African homes and businesses stay more comfortable since 1984. As the country’s original cellulose fibre insulation, our proven blown-in roof insulation solution helps retain up to 91% of indoor heat during winter while blocking up to 88% of summer heat from entering through the ceiling.
Made from 80% recycled newsprint, Thermguard spreads into gaps and hard-to-reach spaces for consistent thermal coverage. Installed through a nationwide network of approved contractors, it improves year-round comfort, reduces reliance on heaters and air-conditioners, and supports lower energy use.
My Experience with Thermguard and Willie Hood
2 years ago
I am extremely impressed with their professionalism! With previous experience the staff slacks and do as they please if the owner is not present, but definately not the case here!
He even vacuumed!
Thank you for your excellent, stress free service, friendly staff and the most affordable rates.
2 years ago
Great service and a fantastic product. I can highly recommend Jason and his team!
2 years ago
Excellent product that works extremely well, especially in summer. Highly professional service, definitely recommended!
Discover how Thermguard cellulose fibre insulation improves comfort, energy efficiency and protection throughout your home or building.
Thermguard helps retain up to 91% of indoor heat during winter and block up to 88% of summer heat entering through the ceiling. The result is a more stable indoor temperature and greater year-round comfort.
Read more about thermal performance →
By reducing heat loss and heat gain, Thermguard lowers the need for heaters and air-conditioners. This can reduce electricity consumption and help control ongoing energy costs.
Read more about energy savings →
Made from 80% recycled newsprint using a low-energy manufacturing process, Thermguard gives discarded material a valuable second life while supporting more energy-efficient buildings.
Read more about our green process →
Thermguard is blown into the ceiling void, allowing the loose cellulose fibres to spread into gaps, corners and hard-to-reach spaces that rigid or rolled insulation may leave exposed.
Read more about blown-in insulation →
Thermguard’s dense cellulose fibre structure helps reduce sound travelling through the roof space and between rooms, improving both thermal and acoustic comfort.
Read more →
Here are some of our previous projects
We start with a free assessment of your home or business. Our approved installers will inspect your ceiling, identify heat loss areas and recommend the right coverage — with a clear, fixed-price quote and no obligations.
Once you’re happy with your quote, we schedule your installation and prepare the right quantity of Thermguard cellulose fibre for your space, ensuring optimal density and coverage.
Our two-person certified teams install efficiently — covering up to 300m² in a single day. Downlighters are safely covered, hard-to-reach nooks and crannies are filled, and insulation is blown to the exact thickness your space needs.
Once installed, our team checks coverage throughout the ceiling void to make sure there are no gaps — because insulation is only as good as its installation.
Your installation is complete, and you’re covered by Thermguard’s product guarantee — so you can start enjoying a more comfortable, energy-efficient home with total peace of mind.
Our approved contractors can advise you on the right Thermguard insulation solution for your home, office or commercial property. Contact us to discuss your ceiling, installation requirements and expected thermal benefits.
Pieter Versfeld
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Our team is ready to help with questions about Thermguard, ceiling insulation, installation or quotations.
Thermguard is South Africa’s original cellulose fibre insulation, helping homes, offices and commercial buildings stay warmer in winter and cooler in summer since 1984.
Made from 80% recycled newsprint, Thermguard is blown into the ceiling to fill gaps and hard-to-reach spaces for consistent thermal coverage. Through our nationwide network of approved contractors, we provide a proven, energy-efficient insulation solution across South Africa.
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