Flat Roof Insulation Uk

With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.

Flat roof insulation uk.

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 flat roof should preferably be insulated from above. The insulation is placed underneath the roof covering and the roof construction. In most cases there will not be a loft in a building that features flat roofing.

This method is especially applied to existing flat roofs which are restricted to a certain height. Our insulation solutions for flat roof applications provide both excellent fire and acoustic performance in addition to high levels of thermal performance. This may help with condensation but causes such a loss of heat that it has been banned in scotland. 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.

When an insulated roof is built from new the insulation layer can be included at different levels within the structure. Loading and impact resistance is also required with compressive strength being an important consideration when selecting flat roof insulation solutions. This is best done when the roof covering needs replacing anyway. A lower u value indicates better insulation properties hence u value requirements usually specify a maximum value.

All our boards are backed up by rigorous quality assurance and plain english technical support. A cold roof has some disadvantages which is why people often choose a warm roof. A cold flat roof is insulated from the inside. Laying flat roof insulation as a rule any roof with a pitch below 10 is classified as a flat roof.

This means there is a vapour control layer in the ceiling and cross ventilation at the eaves or the top of the walls. Tackle heat loss where it matters most up to 25 of a buildings heat loss is through the roof. 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.

A flat roof should have a layer of insulation built into the structure at some level.