Roof Insulation How It Works

Using different materials and insulation helps to control how much heat is allowed through.

Roof insulation how it works.

A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. Reflective insulation is particularly useful in hotter climates in the north of australia. Loft insulation hot water tanks and hot water pipes. The space between the roof and the ceiling is called the loft.

How does loft insulation work. To understand how insulation works it helps to understand heat flow which involves three basic mechanisms conduction convection and radiation. So back to how insulation works. To properly ventilate an attic when it s insulated you will need to install rafter vents.

Heat insulation in buildings. The way heat can be transferred in or out of a home. The hot roof material then radiates its gained heat energy onto the cooler attic surfaces including the air ducts and the attic floor. Your essential guide to insulating lofts and attic rooms.

Conduction is the way heat moves through materials such as when a spoon placed in a hot cup of coffee conducts heat through its handle to your hand. Heat can pass through walls roofing windows and doors the floor and even through your framework. The ideal time to install insulation is when re roofing although above rafter insulation raises the height of the roof which. This air is a rally bad conductor and so reduces the amount of conduction going on.

Roof insulation and ventilation have to work together to maintain airflow and keep moisture out of the attic. They are placed under the roof sheathing between rafters. Glass fibre works as an insulator by traping air. Moisture build up can cause leaks and mold and mildew to grow.

A radiant barrier works best when it is perpendicular to the radiant energy striking it.