Flat Roof Insulation U Values

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Flat roof insulation u values.

Rocksilk krimpact flat roof slab thickness mm 150mm concrete 40mm screed 13mm plaster. Providing you with instant calculations all day everyday with step by step options and hints and tips along the way the no jargon u value calculator takes you through your construction build up until each element is included. Our u value calculator is a free online tool which will help calculate the required thickness of insulation to achieve the desired u value. Work through your own construction detail to get an early indication of the u value that this might achieve.

Store u values in member project folders for future reference. The easiest way of getting a u value calculation is by using our free online u value calculator. Column b is for other extensions upgraded existing thermal elements non exempt conservatories and conversion of unheated buildings. The calculator can be used to calculate u values for floor wall pitched roof and flat roof insulation applications.

The saint gobain insulation uk online u value calculator covers a variety of different insulation applications. The saint gobain insulation uk u value calculator gives you instant access to calculating a proposed insulation thickness and product options or giving an indicative calculation on a proposed construction detail. Free online u value calculator. 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.

Specify your desired u value before immediately calculating the required insulation thickness and product selection. Easy to access calculations. Our insulation solutions for flat roof applications provide both excellent fire and acoustic performance in addition to high levels of thermal performance. These can be supported with a detailed report.

The lower the u value the slower the rate of heat flow and the better the insulating quality. Typical u values using rocksilk krimpact flat roof slab with single ply membrane. Regardless ashrae s new above deck roof insulation standard is a good place to start as it jumped 33 percent from r 15 to r 20 in five of six climatic regions. Column a is for extensions where the existing dwelling s walls and roof u values are worse than 0 70 w m k in the walls and worse than 0 25 w m k in the ceiling.

A u value of 0 55 w m k is used for cavity insulation and 0 30 w m k for internal or external wall insulation.