All Ceiling Insulation products in South Africa must be SABS tested. These tests are to ensure the Ceiling Insulation products are manufactured to the correct specifications. In years gone by, it was mostly stock market listed companies that manufactured Ceiling Insulation.
In the last few years, everyone is trying a new recipe. Unfortunately, this can end up in disaster for homeowners who are not aware of the problems installing Roof Insulation that will give no benefit or could be a fire hazard.
There are many types of Ceiling Insulation on the market worldwide. This can become quite confusing as some manufacturers have no idea about the risks of making insulation that is not up to spec. TIASA must also test all Insulation products to check for the appropriate fire rating.
Glass fibre Ceiling Insulation products are still regarded as one of the best Roof Insulation products because glass fibre products are compression packed making transporting more economical.
Fire rating is one of the main significant factors that separate most insulation products. This is where Aerolite is head and shoulders above the rest. With a Fire Rating, A/A 1/1this insulation will not burn. Aerolite is specified for hospitals because of this unique factor. Most ceiling space insulation products have Fire Ratings B/B 1/2; this means they will not sustain a flame. However, the insulation will merrily burn if there is a flame.
Glass fibre insulation products are mostly used in Europe and the UK. The Aerolite has one of the highest R-values in the country. The Think Pink Aerolite 135mm has an installed R-value 3.78.
There are several polyester insulation products on the market in SA. However, most of them are not worth a mention. The Isotherm Polyester Ceiling Insulation is one of the best. This insulation is also a SANS complaint on the 145mm Isotherm.
The Isotherm 145mm Insulation is SANS compliant, achieving an R-value 3.76 when installed. This Ceiling Insulation is also SABS approved.
The Isotherm Fire Rating, unfortunately, is B/B 1/2. This insulation will not burn; however, the insulation will continue to burn with the flame if there is a flame. Polyester insulation products are great to touch and feel; however; the fire rating concerns some homeowners.
Cellulose insulation is the one insulation type that we will not install. Unfortunately, there is no exact science in this type of insulation, in my opinion. The Cellulose insulation is sprayed or pumped into the roof space, and the installer must try and guess what the thickness is by sight. This does not make sense to get the correct depth.
One of the worst problems with this insulation is water. When this type of insulation gets wet, it will absorb the water until the inevitable ceiling collapse. We have a massive vacuum machine for the removal of this insulation product. The last problem is when the product ages it loses its fire retardency. This becomes a big problem as the paper will now burn or continue to smoulder.