1. Energy Conservation in the roof structure

2. Energy conservation Conservation of energy within a roof structure can be at two different positions i.e. Ceiling level or Rafter level Insulation is placed in between ceiling joist on top of the plasterboard. The insulation placed at this position is usually fibre glass which is between 150mm and 200mm thick. If the ceiling joists are only 100mm deep place 100mm between the ceiling joists and place a further 100mm over the ceiling joists at an angle of 90 degrees to the first layer of insulation.

3. Energy conservation Insulation can also be placed in between the rafters if there is still space for a 50mm air gap between the top of the insulation and the underside of the roofing felt. Alternatively rigid sheet insulation can be fixed to the underside of the rafters with plasterboard secured to the underside. The rigid insulation could also be nailed to the top of the rafters and counter battened for the roofing tiles. 50mm air gap between insulation and underside of felt. Rigid sheet insulation Rafters

4. Types of Insulation Fibreglass Insulation Rigid sheet Insulation with foil backing