Insulating A Skillion Roof

Modern lean to style extensions on existing homes low profile roof design and restricted roof cavities.

Insulating a skillion roof.

The amount of insulation able to be installed is dependent on the rafter depth as there must be a 25 mm gap between the insulation and the underside of the flexible roof underlay. Insulating narrow roof spaces is easy with expol s range of ceiling insulation boards. A cathedral or barn style roof has open rafters which form the ceiling and offer the potential for adding loft space. The roof space is generally inaccessible with little natural ventilation and the small roof space can accelerate problems with moisture.

How you insulate your roof space depends on how you wish to use the roof space. An alternative way to insulate a skillion roof is to install a foam backed sheet material over the existing interior lining. Skillion roof insulation from earthwool glasswool 50 year warranty branz appraised no added formaldehyde ecose technology. Each roof style has some different insulating challenges.

A good time to insulate walls is during recladding or replastering. Walls and skillion roofs are the hardest to insulate after construction as the internal or external lining must be removed. To solve the problem architects and builders turn to expol s rigid foam insulation boards for easy installation and the highest standard of thermal. Expol polystyrene roof insulation is made from high performance expanded polystyrene eps and are easy to install in narrow skillion roof spaces.

Retrofitting insulation into a skillion roof has some challenges and it depends on the type of skillion roof you have. Check with your local building information centre. You can fit insulation into the gap between the rafters and then line the ceiling with wall board attached to the rafters. In skillion roofs the roof cladding and ceiling run parallel typically within 300 mm of each other.

Narrow roof spaces like skillion roofs are often the most difficult part of a building to insulate. A roof is like a hat. Pink batts skillion roof is designed to be used in skillion roof constructions while still achieving the minimum 25mm clearance between the roof underlay and insulation in.