Wool: Wool bedding offers great benefits. That’s because wool is hypoallergenic and dust mite resistant, fire resistant, durable, chemical free, and keeps you cozy warm at night. Wool-based flannel sheets may be hard to find, though.

For cotton sheets, the thread count refers to the number of horizontal and vertical threads per square inch. As a general rule of thumb, the higher the thread count, the tighter the weave, and the softer the fabric. A good set of sheets range from 200 to 400 thread count. Some brands boast thread counts of 1,000 or more. These sheets may be heavier and may take longer to soften over time. But first, you need to determine what type of walls are in your home. In most cases, you will find either cavity walls or solid walls. Fleece is soft, warm, and cozy, but fleece sheets may be too warm for some people. If you’re a hot sleeper who wants warm sheets, consider flannel sheets instead. Internal walls are areas that need insulation too. Most people choose to install rigid boards to the walls along with a vapour barrier and plasterboards. This process is also known as drylining.

Tencel/lyocell: As a regenerated cellulose fiber, these fabrics have a luxuriously silky feel that also feels cool to the touch with excellent moisture management capabilities. For external walls, you first need to fix a layer of insulation material to the wall. The next step is to cover it with cladding or cement. Bamboo sheets, or sheets made from bamboo fibers, are insulating and adjust to your body temperature to keep you cool in the summer and warm in the winter.

To make things easier you usually have either EPS (Expanded Polystyrene) at 90mm, Mineral wool at 110mm or PIR at 70mm on external walls. In most cases, mineral wool insulation or expanded polystyrene slabs are fixed to the wall, before being rendered to make it weather resistant. Obviously, it is best to insulate your internal walls during the construction phase for economical reasons. However, should you forget about it, you can always insulate your home’s existing walls at a later stage. But be very careful to avoid tearing off your drywall. Cotton: Cotton sheets are known for their crisp coolness, but they are also great at keeping you warm during cool nights. Look for heavier-weight cotton sheets with a thread count of 400 or higher. But the benefits to your quality of life will be felt straight away. Your home will be more resilient to changes in temperature and more energy efficient.

Wall Insulation: Buyer's guide

If your home has solid walls, you can insulate either outside or inside. You won’t lose space if you choose to insulate from outside but the overall cost will be higher. Again, installing or adding insulation to the external walls is usually not a DIY project.