Roof Insulation How It Works

Roof insulation is made of fluffy fibrous materials that are good at trapping air in it or at least slows down the air a lot.

Roof insulation how it works.

Loft insulation hot water tanks and hot water pipes. The way heat can be transferred in or out of a home. To understand how insulation works it helps to understand heat flow which involves three basic mechanisms conduction convection and radiation. Heat can pass through walls roofing windows and doors the floor and even through your framework.

The space between the roof and the ceiling is called the loft. Using different materials and insulation helps to control how much heat is allowed through. Roof insulation and ventilation have to work together to maintain airflow and keep moisture out of the attic. Heat insulation in buildings.

Before any work begins the condition of the roof itself should be assessed and any leaks damp problems or structural issues addressed. This air is a rally bad conductor and so reduces the amount of conduction going on. A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. Moisture build up can cause leaks and mold and mildew to grow.

Glass fibre works as an insulator by traping air. The ideal time to install insulation is when re roofing although above rafter insulation raises the height of the roof which. A radiant barrier works best when it is perpendicular to the radiant energy striking it. Glass fibre or other loft insulation materials are laid across the loft to reduce the rate of heat transfer out of the roof see the picture below.

So back to how insulation works. Your essential guide to insulating lofts and attic rooms. They are placed under the roof sheathing between rafters. Reflective insulation is particularly useful in hotter climates in the north of australia.

To properly ventilate an attic when it s insulated you will need to install rafter vents.