Improving insulation in your home is not necessary, do you think? What if there were still improvements? From the attic to the windows, through the roof and walls, here are our 5 tips to better plug the holes.
Insulation often rhymes with the age of the house. To know if you need to better isolate yours, be aware that a house prior to 1980 is unlikely to have been properly insulated. Between 1980 and 1990, insulation became widespread, but the standards of the time are now largely outdated! It was not until 1990 that the walls and roofs began to be well isolated. But not all … Other details betray poor insulation, help you locate them and, above all, give you tips to improve the insulation of your home.
1. Roof insulation: up to 30% savings
According to current standards, a good insulation of the roof in an existing house must have a thickness of at least 18 to 20 cm. Other factors are also taken into account in order to benefit from insulation or renovation premiums in Wallonia, Brussels or Flanders .
If you have an under roof, it all depends on the thickness of the rafters. If they are at least 18 cm thick, it is very simple: intercalate glass or mineral wool between them – or complete if there are already 6 cm. If they are less thick, you can either reinforce them to the desired thickness or fill the available space with less thick insulation wool and cover the whole with polystyrene or polyurethane panels (see also our article ” 7 types of insulation for your roof “) And if you do not have an under roof and therefore no insulation, it is best to put one by the outside, first removing the tiles. The insulation can also be done from the outside, for example with panels.
2. Isolation of the attic: an alternative solution
Not to use them, they are finally forgotten and yet: the attic, even lost and difficult to access, must be isolated at the risk of generating a lot of waste. If your attic does not need to be heated, it is best to insulate them from the floor. Either directly on the concrete, spraying polyurethane foam over it for a homogeneous insulation; Or in a 20 cm space created above the concrete with wood panels, in which cellulose or glass wool or blown rock is blown. So many natural insulations with a close insulation coefficient. And their life span is about ten years.
3. Insulation of the walls: -20% on the heating bill
If your walls and windows overlooking the outside are cold or even frozen in winter and they are hot in the summer, no doubt, your home needs insulation. Even if the heating stops turning, your parts quickly become cold or the temperature is slow to rise when you increase the thermostat.
Walls are the second source of energy wastage, responsible for 20 to 25% of heat losses. If your home was built after 1950, there is certainly a gap between your exterior and interior walls. To know if this vacuum contains an insulator, it will have to be probed. It is better to call on a professional who will then insure your hollow walls.
This involves placing an insulating layer between the outer and inner walls. This is by far the most advantageous method because:
• it produces little or no nuisance during installation;
• it requires only one day of work on average;
• it does not require a building permit and offers an invisible result;
• it is cheap.
A hollow wall can be insulated either by injecting foam, flakes or granules.
However, it is necessary to have at least 5 cm of vacuum in order to be able to inject insulation into the thickness of the walls. If there is insufficient insulation, but there is not enough space, the solution to isolate from the outside remains. This requires a professional, A building permit … and multiply your insulation budget by 6 or 7. There is also the possibility of insulating from the inside, but you lose interior volume.
4. Window and chassis insulation for guaranteed comfort
If your windows are often covered with condensation on the inside and / or if your home does not yet have a double glazed frame, it is time to opt for high-performance glazing and change your chassis. Pay close attention to the coefficient of insulation of the profiles of your chassis: they can vary from single to double. You will find more tips in our article ” New windows: 5 criteria to choose them well “.
5. Avoid heat loss
They do not look like anything and yet, the small heat losses end up weighing heavily on the energy bill. They also feel comfortable.
Think of this small stream of air that bores you when you are comfortably installed in the living room … The cold air easily benefits from the lack of waterproofing of your doors and windows to slip inside. To find the air currents, test the spark plug. The flame begins to float like a flag when you approach it from a door or a window? This is an obvious sign. The gaps must be clogged.
Install door sills, make your windows insensitive to drafts with gaskets or foam insulation, place a flap to close the open fireplace and replace the old electrical outlets with waterproof enclosures To the air. You will feel the difference