The undercut anchor consists of an anchor sleeve with matching hex bolt with locking ratchets (screw).
Drill hole, anchor sleeve and screw length must be matched to the desired insertion depth and the bracket of choice. Only the use of matching parts will make the assembly quick, simple and safe.
Insert the at the base compressed anchor sleeve, together with the required bracket, into the undercut hole.
Screw in the screw, exerting gentle pressure on the bracket (in order to fix the anchor). The locking ratchets of the screw will cut into the bracket, securing the screw.
The anchor sleeve is expanded to its original dimensions by inserting the scew to a controlled depth, making it sit snugly against the panel in the undercut area of the drill hole. After the assembly, the anchor will sit in the undercut hole free of expansion pressure (i.e. the bracket can still be rotated with a certain amount of physical effort).
KEIL undercut anchors are monitored externally.
Sophisticated and approved by building authorities
Undercut attachments for façade panels in ventilated rainscreens are nowadays stateof-the-art. The Deutsches Institut für Bautechnik (DIBt; German institute for building technique) drew up an approval concept for this purpose. Please find our current overview of relevant documents on planning permissions under approvals.
General building approvals General building approvals will be granted for construction products and techniques within the scope of state regulation for which there are no generally acknowledged technical regulations, especially DIN norms, or which differ from them in a significant way. They are reliable verifications of applicability of construction products resp. of types of construction in regard to constructional requirements of buildings.
European Technical Assessments European Technical Assessments (ETA) will be issued for construction products in the scope of the EU Construction Products Regulation. They evaluate the performance of a construction product.