U values

Kippure

I need a chart that shows the u values of all building materials .

Where do i find them. Any links to this information.

Cheers

sas

Kippure wrote: »

I need a chart that shows the u values of all building materials .

Where do i find them. Any links to this information.

Cheers

Building materials don't have u-values. They have thermal conductivities.

U-value is calculated based on the thermal conductivity and the thickness of the material. This calculation also incorporates any cold bridging as necessary.

You are highly unlikely to find any single chart with the thermal conductivity of all building materials.

sinnerboy

http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,19069,en.pdf

( well a starting point anyway )

Jimbo

The thermal conductivity of alot of materials are listed on Technical Huidance Document L - Page 36

link: http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,19069,en.pdf

Kippure

Nice one:)

sydthebeat

if you are calculating u values, you must also include the conventions for calculating u values...

http://www.bre.co.uk/filelibrary/rpts/uvalue/BR_443_%282006_Edition%29.pdf