The use of roof insulation has been made compulsory for all new homes in South Africa. The SANS legislation is out as a result of our energy crisis. In order to be compliant with the building laws, you need to install the appropriate thickness of ceiling insulation.
When you think about it, insulation can be one of the best investments for your home. Roof insulation will help you decrease those high, unwanted electricity bills from Eskom. The purpose of installing ceiling insulation is to reduce the heat flow that takes place in and out your home.
Roof insulation in summer
In the summertime, ceiling insulation products will decrease the use of cooling devices in your home. Basically, it blocks the heat that comes in through your ceiling and warms up the inside of your house. This can be unbearable during the hot summer months. Your roof is like a giant oven inside during summer. The last thing you want is that heat coming inside your home. If you are running an aircon in a well-insulated home, it will cool the place down really fast in comparison to an un-insulated home. Also, with no heat coming in through the ceiling, it will stay cool inside for much longer periods of time. Take a look at some of the advantages of aerolite.
Ceiling insulation in winter
In the wintertime, roof insulation works the opposite way. Hot air rises, so all the warm air you generate inside you home escapes through the ceiling. Once you have a well-insulated ceiling, the warm air generated will stop leaking out and stay in the areas that give you a comfortable living environment. You also won’t need to run the heating systems all night. Insulating materials retain the heat inside your home for much longer periods of time. This in turn reduces your power consumption and saves you money in the long run. Some of the advantages of isotherm.
Roof insulation becomes the barrier
Once you home is properly insulated, ceiling insulation become the heat flow barrier between your roof and the inside of your home. Usually, the heat would only have to pass through the thin rhino board ceiling. Using a product like think pink aerolite will stop the heat coming through the ceiling.
With an insulating product installed, it has a much tougher time penetrating into your home. You can reduce up to 80% heat flow with the best roof insulation products.
Its best to get it professionally installed, but here is the diy guide for self install.
How much cooler will ceiling insulation make my home?
Every home is slightly different. It does depend on a few factors. For example, which way your house faces. Homes that don’t get a lot of sunlight in through the windows will always be cooler in summer. Additionally they will be colder in winter too.
On average you should get around a 4 -5 degree difference in temperature. Your heating and cooling systems will not be used as much because the insulating material like isotherm will be keeping the temperature more consistent indoors. You can actually run heating and cooling device on much lower setting after installation. This will save you a huge amount of money in the long run.
Correct roof insulation thickness for your climatic region
What you need to look out for is R-value. When choosing a roof insulation product for your ceiling in South Africa. Make sure the thickness and R-value match the SANS building regulations climatic regions. These regulation have been put in place to help you reduce power consumption and save energy.
Never choose a 40mm or 50mm product. You will be wasting your hard earned money on a product that won’t work well with the South Africa climate. A well-insulated home will recover the cost of insulation in approximately 2 to 3 years.
Johannesburg, Pretoria and Western Cape need a minimum of 135mm to be compliant. Durban and the greater KZN need a minimum of 100mm. If you can afford it then go as thick as possible.