Insulation anchoring

In the case of anchoring of the thermal insulation system it is necessary to build according to project documentation. The number, type and length of the expander anchors depend on the properties of the substrate and must be determined by static calculation based on the tested load capacity of the expander anchors.

Mechanical anchorages are recommended after a construction break of min. 24 hours after the insulating boards are glued on. Exceptions are the Baumit StarTrack adhesive anchors, which fit before joining the thermal insulation boards.

The number of anchors must be determined by static calculation. The recommended minimum number of anchors is 6 pieces per 1 m2.The diagram of the anchor spacing depends on the number of anchors and the type of insulators. For basic anchor layout schemes, can be found in the technical details in the anchor section.

New building, un-plastered masonry

Required anchor length = d1 + d2 + 10 mm (thickness of adhesive mortar) d1 –the minimum anchor length in mm is stated on the anchor or in the technical sheet of the anchor

Reconstruction

Required length of the anchor = d1 + d2 + d3 + 20 mm (thickness of adhesive mortar)

d1 - minimum anchor length in mm is stated on the anchor or in the technical sheet of the anchor

d2 - thickness of the insulator in mm

d3 - the actual maximum thickness of the masonry plaster

• The drilling hole for anchor installation is made perpendicular to the surface of the substrate.
• The bit diameter must correspond to the diameter of the anchor.
• Mineral wool thermal insulation boards (MW) must first be punctured by a drill and then drill the hole.
• Holes without impact must be drilled into highly porous building materials (eg aerated concrete) and hollow building materials. In the case of concrete or full bricks, a drill with a hammer.
• The hole for the anchor must be mined by min. 10 mm deeper, respectively. 25 mm for countersunk anchor mounting, such as the actual anchoring depth of the anchor, unless otherwise stated in the manufacturer's technical documentation.
• Anchors must be installed at a distance of min. 100 mm from the edges of the walls, ceilings, window and door openings or expansion joints.
• After installation, the plate of the spacer may not disturb the flatness of the thermal insulating, reinforcement layer. The anchor plate should not be installed more than 10 mm in thermal insulation (not applicable for countersunk anchor assembly).
• An anchor which is badly attached (not firmly anchored to the substrate) or damaged, must be replaced by a new splinter armature that is adjacent to it.
  
• If possible, a badly installed anchor should be removed, if not, the anchor should be adjusted so as not to disturb the flatness of the thermal insulation system. The hole formed in the thermal insulation plates after the anchor is removed must be filled with heat insulating material.