Reasons to Install Underfloor Insulation

Even if your thermometer showed a comfortable reading last winter, you may not have felt particularly warm during the coldest months. The reason for this could be that heat was escaping through gaps in your flooring or through the floor itself.
Heat can escape through completely sealed floors
Most building materials do not have particularly high insulating properties, so even if you’ve sealed all the gaps in your floor, warmth is still able to escape, making you feel colder in winter. This becomes particularly noticeable in winter when bare feet and bare ankles feel it the most. Putting down extra rugs may not be an option for asthma sufferers or people with allergies, but installing insulation in your underfloor space benefits everyone.
Installing underfloor insulation for added savings
If you already have an adequate level of insulation in your ceiling, you are most likely enjoying significant savings on your energy bills every year. Uninsulated ceilings account for up to 35% of heat loss during winter and up to 35% of heat gains during summer. However, what many people don’t realise is that up to 20% of heat can be lost through the floors of uninsulated homes, and even more if not all gaps are sealed properly. In fact, it’s not uncommon for homeowners to report that they earn back the initial investment of installing underfloor insulation already within the first few years.
Safety first when installing underfloor insulation
While installing insulation might not seem to be the most dangerous of tasks, it does present its own set of hazards. The area under your house may contain all kinds of rubble from the time of initial construction including bricks, pieces of pipe, sharp nails and broken glass. Depending on your location, you may well be paying a surprise visit to snakes or spiders, which have potentially been living there undisturbed for years. If access to your underfloor space is very low and you are required to crawl in or even lie on your back, take extra care to avoid injury. Use safety glasses, light up the area you are working in, watch out for electrical wiring and don’t rush when moving around.
Foilboard Green Rigid Insulation Panels
- Wall options from R0.26 to R1.3 to match your comfort target
- Combined thermal break, vapour barrier and reflective insulation in one
Polyester Underfloor Insulation Rolls
- No special clothing, gloves or mask needed to install, according to the safety data sheet
- Underfloor options from R2 to R4
Foamex StyroTherm Extruded Polystyrene Sheets (XPS Insulation)
- Underfloor options from R0.81 to R2.15
- Rigid, moisture-resistant board that suits tight spaces
Find the right insulation for your job, or get a trade quote.

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