DIY Options


Professional or DIY installation options are available. Installation machines can be rented from the Thermguard factory in Spartan, Kempton Park. For more information on our DIY rental and purchase options, or to place an order, please contact us on 011 018 7800 or info@thermguard.co.za.


Installation of Thermguard insulation is quick and efficient. A team of two can easily install 300m2 in one day. We will show you how to operate the installation machine when it is collected. A typical installation video can be viewed below.

General: only two people are needed to install Thermguard – one to operate the machine and one to direct the hose. Downlights must be covered with downlight covers before installation commences. Dust masks should be worn.

Thermguard is installed by emptying bags of insulation into a machine which aerates and blows the insulation through a hose and into the ceiling void where it can be installed to any thickness.

Unlike rolls of insulation, Thermguard does not need to be carried into the ceiling, measured and cut exactly to size before being placed. Simply open the bag, pour into the machine and install to the desired thickness.

Thermguard is non-toxic & non-irritant which means it can safely be spread or moved by hand should maintenance be required.

Installation Machine
Before Installation
After Installation

Coverage: The recommended thickness will vary depending on the area you live in. In Johannesburg, the recommended insulation thickness is 135mm, while Pretoria is 115mm. The table below sets out the number of bags which are required to insulate various ceiling areas at different thicknesses.

Table: bags per house

House size 20m2 50m2 100m2 150m2
Thickness (mm) 100 115 135 100 115 135 100 115 135 100 115 135
Coverage (m2/bag) 5.4 4.5 3.8 5.4 4.5 3.8 5.4 4.5 3.8 5.4 4.5 3.8
Bags required for job* 4 5 6 10 12 14 19 22 27 28 34 36
House size 20m2
Thickness (mm) 100 115 135
Coverage (m2/bag) 5.4 4.5 3.8
Bags required for job* 4 5 6
House size 50m2
Thickness (mm) 100 115 135
Coverage (m2/bag) 5.4 4.5 3.8
Bags required for job* 10 12 14
House size 100m2
Thickness (mm) 100 115 135
Coverage (m2/bag) 5.4 4.5 3.8
Bags required for job* 19 22 27
House size 150m2
Thickness (mm) 100 115 135
Coverage (m2/bag) 5.4 4.5 3.8
Bags required for job* 28 34 36

*Calculation: house size ÷ coverage = bags required (round up to nearest whole number)

Note: we recommend taking a few extra bags in case you accidentally install a thicker layer than intended. Unused bags may be returned if they are in the original condition.


The installation machine weighs approximately 60kg and each bag of insulation weighs 14kg. A Ford Ranger double cab with the tailgate down can transport a maximum of 25 bags together with the machine and hose. Rope is needed to secure the bags and machine. Using a trailer makes collection a lot easier.


Full payment must be made upfront. Payment is to be made by way of cash or EFT.

Card facilities are not available.

COST (All prices quoted exclude VAT)

  • Cost per 14kg bag: R195.00 ex-factory
  • Delivery within Gauteng: R10 per bag (min. load quantity of 100 bags, maximum load of 300 bags)


  • R5,000.00 refundable deposit
  • R350 per day (Compact Agitator, Econo Blower, 20m Hose)
  • (Note: that if 20 or more bags are purchased, machine rental is free for 24 hours)
  • Downlight covers and specific spares are available from the Thermguard factory.
  • Water pipes in the ceiling space should be insulated to prevent freezing.
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