Your exterior walls have direct contact with the outdoor air and poor insulation installation can allow for unregulated heat transfer. Your interior walls are just as important to maintain to reduce noise from room to room and regulate the temperature through each space.
It is true that draughts are more noticeable when they are coming through windows and doors. However, these points of entry actually account for very little of the surface area of your home's exterior. As most of this surface is taken up by the walls and the roof, it is here that most of the heat is lost.
Typically, the best place to start is in the attic. In the winter, the greatest heat loss is usually to the attic – and it's not all about insulation. Although cellulose insulation far outperforms all other attic insulation on the market, it plays a very important part in keeping heat in the home.
What causes cold walls? Poor insulation is the main reason why walls feel cold, especially in older properties with solid walls. Roughly 35% of heat loss is through walls and gaps, in and around windows and doors. Walls transfer heat and the warmth from your home will escape outside if your walls are poorly insulated.
Roughly 35% of all heat loss in a home occurs through the walls. This loss generally occurs through conduction or physical contact since a home's walls are in physical contact with the colder temperatures outside. The heat energy inside your house is primarily transferred by conduction through the walls.
Did you know you 25%-35% of your home's heat loss and gain happens through the ceiling? Compare that to 15%-25% through the walls. According to these statistics, insulating your ceiling will make more of an impact than your walls, so you should make it your priority.
Cold exterior walls can be a common issue in many homes, especially during winter months. This phenomenon is often caused by insufficient insulation, air leaks, or moisture issues.
By far, the most effective solution is an insulated exterior wall coating – again using SprayCork. A practical alternative, the coating is applied to the outside of a cold wall and effectively retains heat without the need for adjustments to existing fittings.
Tips for Sealing Air Leaks
Caulk and weatherstrip doors and windows that leak air. Caulk and seal air leaks where plumbing, ducting, or electrical wiring comes through walls, floors, ceilings, and soffits over cabinets. Install foam gaskets behind outlet and switch plates on walls.
This problem often points to inadequate circulation of warm air. It could be due to blocked vents, a failing HVAC fan, or issues with the furnace itself. Ensure that furniture or drapes are not blocking your vents.
About 35% of the heat will escape through the walls and through gaps, in and around windows and doors, and about 10% of heat will disappear through the floor. Taking action to make sure your home is energy efficient has many benefits.
In large empty spaces such as wall cavities, heat can be lost across the air space by convection and radiation. Insulation divides the air space into many small pockets of still air, inhibiting heat transfer by convection. At the same time, the insulation material reduces radiation across the space.
Heat loss through walls can be reduced using cavity wall insulation. This involves blowing insulating material into the gap between the brick and the inside wall. Insulating materials are bad conductors and so this reduces the heat loss by conduction.
Use a flashlight: One of the simplest ways to find a draft is to turn out the lights and shine a flashlight around the area where you suspect the draft is. Position someone else on the other side and, if they see any light shining through, this is likely the source of the draft.
There are two main types: thermal leak detectors and ultrasonic leak detectors. Thermal leak detectors work by detecting temperature differences in the air. Ultrasonic leak detectors work by detecting sound waves that are produced by air leaks.
Fix any cracks or openings in the walls. Then, examine your windows and doors. Weatherstripping can be a simple solution to help reduce drafts. For window frames, seal up smaller holes up to 1/2 inch with caulk and use spray foam on holes that are between 1/2 inch to 3 inches wide.
Let's liven up the whole room by hanging a stunning tapestry on the wall. If you hang it on an outer wall you'll gain instant insulation—even a nice blanket or secondhand rug can add pizzazz and warmth to your living space. You can further insulate a room by strategically placing a bookcase along an outside wall.
The cheapest way to insulate internal walls is by using materials like insulated plasterboard or thermal lining paper, which are affordable, easy to install, and help reduce labour costs.