Should You Or Not Worry About Insulation Thickness?
We insulate our homes to keep the heat inside. Proper insulation helps us to keep the heat inside without escaping to the outside. It’s not a piece of cake, though. Before we talk about Insulation Thickness, let’s get to know about the ways of heat transfer. The heat is the transfer of energy from molecule to molecule. Energy cannot be created or destroyed – we learned it in school. Can you remember it?
What is exactly happening to the heat in your home? And what would happen if you insulate your home without considering Insulation Thickness? OK, let’s get to know what takes place in the summer. Summer is the hottest season you come across in a year. In some parts of the world, people die due to excessive summer heat. Heatstroke is the most dangerous side effect of excessive summer heat. Heat every time moves from hot place to a colder one. So, in the summer, the outside temperature is higher than the inside temperature. Which means through every gap and hole in your home, outside heat enters your home. Not only from holes and gaps, heat can enter through the walls, floor, and the ceiling too. Now, what does that mean? Well, you must insulate all these areas to keep the heat inside and to preventing outside heat entering your house.
So, what’s with the Insulation Thickness. OK, now we must talk about R-value. “The R-value is a measure of thermal resistance, or the ability of heat to transfer from hot to cold, through materials (such as insulation) and assemblies of materials (such as walls and floors.)” That is what Wikipedia says about the R-value. It’s a complete definition, and that is why I included it here. There is a relationship between the R-value and Insulation Thickness. Every country has set recommendations on the right Insulation Thickness. Over the past few decades, recommended values have been changed considerably. So, doubling the thickness will double the R-value. I know what you are thinking right now. What if I add 10 layers of insulation? Will the R-value will be increased by 10 times? No, it won’t happen. After a certain limit, the rate of increase of R-value with respect to increasing of Insulation Thickness is almost negligible. Which means adding 10 layers of insulation will just waste your money. Well, it can have negative effects on insulation.
Speak to an insulation professional in your area and find out the recommended Insulation Thickness in there. The recommended thickness in the UK is different to what in Australia. In extremely cold countries like Canada, recommended values are much higher. Anyway, depending on the type of insulation, required thickness may vary. For example, a new type of insulation is taking over the market now. We call it the Foilboard which comes as a rigid board with a thickness of just a few centimeters. But its R-value is relatively higher than other batt and bulk insulation types.
Some final words: Right Insulation Thickness is a thing to consider when insulating your home. Your home may be under-insulated if there’s not enough insulation. If you live in an old house, then it is safe to assume it.