Patent ID: 8590236

Claim:
A single shaped insulating board for attachment to building studs, having a vertical cross section, a horizontal cross section, a front surface and a substantially flat back surface, wherein the back surface forms a drainage panel, said drainage panel comprising a multitude of drainage areas, each drainage area being formed by vertical drainage ridges and drainage grooves, and each drainage area being separated from each other by an inner stud ridge, said vertical ridges and grooves running from an upper end of the back surface to a lower end of the back surface, and said inner stud ridges locating from each other at distance such that a multiplication of the distance equals to a distance between the building studs, whereby each building stud coincides with one inner stud ridge, and the front surface comprising markings for attachments on the building studs, said markings coinciding with those stud ridges on the back surface that coincide with the building studs; wherein a height of the drainage ridges when measured as a distance from a bottom of a drainage groove to a top of an adjacent drainage ridge is smaller than a height of the inner stud ridges when measured as a distance from a bottom of a drainage groove to a top of an adjacent inner stud ridge; and wherein the front surface is formed of horizontally aligned ridges having a short face and a long face, the short face of one ridge being joined in an angle to the long face of an adjacent ridge, whereby the vertical cross section has a substantially saw tooth like edge toward the front surface and a flat edge toward the back surface.