Roof Insulation Comparisons

What is the best roof insulation? A comparison

Besides the consistent R-Values unique to loose-fill roof insulation, one of the main advantages over roll type ceiling insulations is that loose fill provides a true 100% cover and as a result, yes, 100% seamless. 


This seamless blanket prevents heat gains and losses from occurring through gaps, obstacles and similarly hard to reach places. These inefficiencies would no doubt reduce your home insulations effectiveness by up to 30%, which is quite common with blankets/roll type insulation old or new. Why waste the money on a product that doesnt do its job perfectly?


Weight is an extremly important factor to consider with bulk insulations. Cellulose fibre insulation is around 3.78kg per m2 @ 135mm thick, whilst Thermo-floc® is only 1.8kg per m2 @ 150mm thick and maintains its loft for much longer versus cellulose that will settle 20-25% of the installed thickness within a relatively short period of time. Due to the breakdown of cellulose and its unfortunate ability to absorb water from the atmosphere, this most likely causes it to settle much more rapidly than mineral based insulations that dont absorb moisture.

Loose-fill Insulation

Roll / Blanket

Thermal Image Performance

To better illustrate the inferior insulating qualities of blanket roof insulation both new and old, we have put together a collection of thermal images showing you the real world performance compared to loose-fill insulation. It is very difficult to photograph a ceiling on our thermal camera once we have insulated with Thermo-Floc® loose-fill insulation as there are no hotspots to contrast in the image due to its seamless coverage, this means its extremely efficient as an insulator. All surfaces are uniform in temperatures. You will notice the massive gaps with blankets and polyester as the glowing orange areas, this indicate no insulation in those areas, thus allowing heat or cold to enter your home interior.