The installation of the anchors represents a fundamental operation so that the fixing can exhibit the expected seal . But what are the fundamental operations to always perform during laying?

The installation of chemical anchors is more delicate than that of mechanical anchors, in this mini guide we will give you general information but remember to always read the instructions of the product before using it, to make sure you perform a professional installation !

In the case of particular products or materials, for example in the case of drilling a hole with a diamond crown or deep installations of bars with improved adhesion, consult the catalog pages and the ETA document.

Installation of chemical anchors in solid masonry : here’s how
Drill the solid material with rotopercussion, respecting the diameter of the drill bit specified in the technical data sheets ; drilling in rotation only in the case of low density solid masonry;
Carefully clean the hole by performing ,

in the case of products equipped with ETA, for bars with a diameter of less than 20 mm and a hole depth of less than 240 mm, 4 blowers with air pump, 4 brushed with a pipe cleaner (after checking the state of wear with appropriate template), 4 blowers with air pump ; for bars with a diameter greater than 20 mm or a hole depth greater than 240 mm, clean in the same way using the compressed air pump with a minimum pressure of 6 bar;

If necessary, mark the bar at the expected anchoring depth;
Mount the static mixer on the cartridge and the cartridge in the appropriate extrusion gun;

Check that the temperature is above + 5 ° C, unless otherwise specified;

Extrude the anchor discarding the first portion of product not yet perfectly mixed, approximately 10 cm of product or in any case until the color is uniform;

Extrude the product into the hole starting from the bottom of the hole, leaving the nozzle always immersed in the extruded resin. It is sufficient to extrude 2/3 of the hole volume. For deep holes use extensions;

Insert the threaded rod with slight rotations ;
Correct installation is indicated by the leakage of resin from the hole . If not, extract the bar and extrude additional resin and reinsert the rotating bar. clean the resin on the surface;

Respect the hardening times according to the type of chemical anchor and the temperature; do not touch the bar until the resin has completely hardened;
Tighten the element to be fixed with a torque wrench to the prescribed tightening torque.

For fixing wooden beams on concrete (cracked and non-cracked) we recommend the use of the anchor W-SA TC . This allows to make “invisible” anchors as it is possible to hide the anchor point by means of wooden caps, unlike a traditional mechanical anchor in which the head or nut remains visible.

Furthermore, if the traditional anchor is stressed only in the head with this Würth anchor the stress is distributed along the entire length.

Among the joints for wooden beams : anchoring shoes, anchors for wooden beams, corner fixing plates, corner plates for fixing on concrete, double-reinforced corner joints for load-bearing elements.

The Sendzimir galvanization is the most galvanizing used for joints, plates and brackets. It is a type of hot-dip galvanizing that offers cathodic protection, which protects against corrosion even if for any reason (bumps, scratches) the coating is damaged (healing effect).

In the construction of the roof an important phase is the laying of the sheets . The main function of the breathable sheets and of the brakes when the steam passes is to prevent the formation of harmful condensation inside the insulating package : limiting the quantity of steam that passes through the insulating package (brakes) and promoting their rapid expulsion towards the outside (breathable).

By correctly applying the stratigraphy from the inside to the outside in the roof construction, you will have the security of not having any condensation in the insulating package which will remain dry, efficient and long-lasting. The Wütop program is dedicated to roof protection products and includes sheets: