Flat Roof Insulation Uk

A cold flat roof is insulated from the inside.

Flat roof insulation uk. A flat roof should preferably be insulated from above. A layer of rigid insulation board can be added either on top of the roof s weatherproof layer or directly on top of the timber roof surface with a new weatherproof layer on top of the insulation. Ecotherm offers a comprehensive quality range of rigid flat roof insulation products. Tackle heat loss where it matters most up to 25 of a buildings heat loss is through the roof.

Laying flat roof insulation as a rule any roof with a pitch below 10 is classified as a flat roof. Loading and impact resistance is also required with compressive strength being an important consideration when selecting flat roof insulation solutions. All our boards are backed up by rigorous quality assurance and plain english technical support. This means there is a vapour control layer in the ceiling and cross ventilation at the eaves or the top of the walls.

Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation. A lower u value indicates better insulation properties hence u value requirements usually specify a maximum value. The insulation is placed underneath the roof covering and the roof construction. This is best done when the roof covering needs replacing anyway.

This may help with condensation but causes such a loss of heat that it has been banned in scotland. In most cases there will not be a loft in a building that features flat roofing. This means that your approach to insulation will differ from a standard pitched roof. U value of a flat roof to comply with part l of the building regulations 2010 all roofs to rooms except those in unheated buildings should be thermally insulated to a maximum u value of of 0 18 w m k.

A cold roof has some disadvantages which is why people often choose a warm roof. Cold flat roof insulation lots of traditional flat roofs are of the cold roof construction type. Flat roof insulation flat roofs are a less common sight in the uk owing to their typically higher maintenance requirements when compared to other forms of roof construction although they can be a versatile form of roof construction. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.

When an insulated roof is built from new the insulation layer can be included at different levels within the structure.