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What separates radiated warmth from blown hot air, seen from the point of view of the body rather than the thermostat.
Olivier compares your ceiling to the sky, and explains why only a ceiling can give an even temperature.
When the ceiling cannot be used, a wall can carry the heating instead. How that is built, and what it changes.
A textile complex backed with aluminium: noise cut and heat returned within the same ten millimetres.
Twenty millimetres instead of ten centimetres of stud wall, for the rooms where there is no space to give away.
A mirror, a picture, a splashback, a wooden panel: any of them can heat, without looking any different.
Can you keep the mirror you have and add heating to it? The short answer, shown rather than explained.
Olivier explains the indicators that describe how an insulation product performs beyond the familiar R value.
The characteristics of R'BULL Pro 13 reviewed one by one: thickness, weight, fire behaviour, handling.
How to cool a home or a commercial space effectively, including where several floors have to hold the same temperature.
Which form of heating costs least to run, and how to bring a heating bill down when it has become a serious expense.
The question everyone asks first. It is less counter-intuitive than it sounds, once air and heat are separated.
How a 100% radiant heated stretch ceiling is built, using the same mechanism that makes an igloo habitable.
Nature is the model here. Clouds and the sun point to a way of heating that is remarkably efficient.
Is it worth asking for the thermal resistance of a thin insulation product? The answer is less obvious than it looks.
Why airtightness matters in an insulation layer, and how to achieve it. The body is the model: we ventilate through the nose, not the skin.
Emissivity and thermal resistance describe different phenomena. Which one matters depends on the product in front of you.
Composition, behaviour under heat, mechanical strength and installation: what defines a reflective thin insulation.
Thick and thin insulation do not work on the same phenomenon, which is why a single figure cannot separate them.
How connected thermostats changed the way heating is managed, and what that is worth in comfort and in running costs.
How a 100% radiant ceiling works, and what separates it from a heating film simply stuck to the back of mineral wool.
Ceilingo training for building professionals, covering insulation, heating, cooling and sound systems.
The ceiling is the largest heat exchange surface in a room, well ahead of the floor. That is why heating and cooling from above works so well.
Comfort standards have moved on. Comfort is no longer only something you feel, it is something you control.
What links heat, temperature and what we actually feel? Getting those three apart is what makes thermal comfort explicable.
What is known about the risk of burns from contact with electric heaters and other domestic heating appliances.
How the heating films are wired together, and why the type of connector used decides how long the job lasts.
An experiment on a scale model, with a 30 watt heating film, and what it tells you about a radiant ceiling.