Gluing instead of drilling: Assembly without holes and dowels

Sticking instead of drilling leaves walls completely

Gluing instead of drilling: Assembly without holes and dowels: assembly

Gluing instead of drilling sounds seductive, drives up-and-coming home improvement but wrinkles on the forehead: Can this really hold?

A shelf, neatly pegged in a stable wall, is known to be able to record very heavy loads, from the conversation dictionary on the TV to the stereo.

Is that possible with glue?

Fundamentals of "Glue-on-Drill-Glue"

Assembly adhesives with "stick instead of drilling" function are mostly polymer adhesives. These are not unlike silicones in their application and need to be cured for contact with the humidity.Under the exclusion of air, such an adhesive can not bind accordingly.

Good to know, because many things (shower rod heads, mirrors, brackets, etc.) are definitely mounted with air and suction on tiles and smooth surfaces. The mounting adhesive remains at Luftabschluss day and sometimes for weeks as chewing gum-like, tough and above all unstable mass - this does not work.

Thus, a "glue-on-drill-glue" is actually a mounting glue and thus subject to certain restrictions in terms of handling, use and above all strength.

Assembly adhesive: area and layer thickness are crucial

Gluing instead of drilling: Assembly without holes and dowels: drilling

Small adhesion surface - little effect

Assembly glue, as we now just want to call the "glue-on-drill-glue" Above all, you need the following things for secure bonding: At least on one side a sucking surface, air supply and, above all, the largest possible adhesive surface.

This starts the problem: Few things that have to withstand high forces have a really large adhesive surface, e.g. Wall hooks, shelves or shower rods. This is where the application of assembly adhesives actually separates, especially if the contact surface should be very small.

The picture shows the attachment of a shower rod with mounting adhesive: Unfortunately, it must fail. The inner adhesive dots are not in contact with the outside air, the adhesive remains soft and can not cross-link. The adhesive surface on the outer ring of the shower rod holder, however, is much too small, especially since the surface is smooth on both sides. This connection will probably be solved.

Assembly adhesives thus require the largest possible adhesion surface. It is also the Layer thickness crucial: it should be as thin as possible, "a lot helps a lot" does not use anything here. The adhesive must be able to penetrate into the ground, network there and thus create stability. For porous and absorbent surfaces such as wood, this works fine, but on smooth surfaces such as tiles and glass, this is difficult.

Gluing instead of drilling: Assembly without holes and dowels: holes

The adhesive penetrates into the porous substrate and crosslinks there (enlarged view).

Therefore, the should Surfaces if possible absorbent on both sides his. Wood on plaster, wood on wallpaper, for example, are problem-free, glass on tile or plastic on tile are problematic - especially for small contact surfaces.

Peel off without damage

A popular argument for the alternative "gluing instead of drilling" is the allegedly damage-free redemption. For the interior of the wall, this may well be true: no hole is drilled, the masonry remains untouched and intact.

wallpaper and plaster, however, are definitely affected by assembly adhesive: Woodchip remains, well networked, sticking to the back of the glued object. Also plaster can be damaged: If it has been glued over a large area, it is now really expensive. Drills and dowels should therefore be preferred, especially with large adhesive surfaces. These can be closed with putty and paint and damage the wall at best low.

The conclusion

"Sticking instead of drilling" is possible, albeit to a limited extent: For small surfaces, hard and smooth surfaces as well as under exclusion of air can not work with the common products glued connection. In area applications of light objects (baseboards, wood panels, etc.), however, appropriate assembly adhesives can perform well. The drilling machine, dowel and screw will not replace the products on the market for the time being.

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