About DUKO

DUKO (Dampspærre- og Undertagsklassifikationsordning ApS) is an independent Web-based information scheme whose purpose is to help developers and consultants choose the correct underlay.

DUKO provides an overview and makes it easier to find the underlay that suits your roof and building.
DUKO divides underlay products into different exposure classes and requires suppliers to submit documentation of the properties of their products. 
DUKO helps ensure correct installation, also by requiring manufacturers to prepare detailed instructions in how to use the different underlay products correctly.
c/o Fonden BYG-ERFA
Ny Kongensgade 13
DK-1472 København K
Phone +45 26 73 04 97