You’ve probably have heard this term many times: thermal envelope. What is a thermal envelope? Don’t worry its not a letter you get from your bill collector! In fact every single house has a thermal envelope and this thermal envelope in a few words is the boundary between the inside living space or conditioned space and the outside environment.
A thermal envelope is a very important key element in order to have a well energized home or a low energy home. The thermal envelope is everything in a house that helps shield the habitable space from the outdoors. Some of the key parts include outer walls, the foundation, roof, doors, windows etc. What purpose or what roles does a thermal envelope have in my home you wonder? Well that is a very good question and one you should have the answer to. A thermal envelope helps prevent any heat transfer from the inside of your home to the outside of it. This is especially important during the winter or in the summer time. In other words a thermal envelope is there to prevent warm air from inside your house produced by heaters to leave your home and cool air from leaving during the hot days.
In order for your home to have the maximum energy efficiency and comfort, this thermal envelope has to be a prime factor to be taken into account before anything else. The effectiveness of your home’s thermal envelope depends on various factors:
1) the insulation in the walls, ceilings, basement etc.
2) moisture and condensation that may affect insulation performance
3) the rate of exchange inside and outside air
It is possible to improve the efficiency of your home’s thermal envelope with a simple step:
Proper Insulation. When you have a properly insulated home your home’s thermal envelope will have the maximum energy efficiency and you will even have lower energy bills, that’s a plus!
There are many insulation options in the market but it is vital to look at each of these options efficiency to insulate properly. One of the key factors to achieving this will be to look at the R-value, and insulation is all about the R-value. This R-value is simply the material’s resistance to heat traveling through it, the higher the R-value the better because this will guarantee the resistance there is and the more energy efficient the material chosen may be.
There are many insulation options such as fiberglass, cellulose spray foam etc. That is why the R-value of each of these materials is important. The greater the insulation level present in a home the better performance there will in regards to energy and comfort. Once this achieved
your home’s thermal envelope will be in great shape.