Adhesive as an alternative to drilling

Using Construction Adhesive

Even Mirrors Can Be Mounted With Construction Adhesive

Mirrors, towel hooks, shower racks – Bathroom furnishings that we don't want to miss. If only the bore hole problem did not exist! In rental flats in particular, every bore hole in the wall and tile is accompanied by the nagging thought of having to fill and smooth over the holes when we move out again.

And even if we own the house, we instinctively hesitate to drill into the freshly installed tile backsplash, because there is risk of a tile cracking. Are there alternatives? Here you can learn how it is done and what you have to keep in mind.

Selecting the Right Adhesive

When you are looking for the right adhesive, the product name and description of the manufacturer quickly provides information on whether it is appropriate for your purpose. Make sure that the adhesive is suitable for your surface. Depending on whether the surface is smooth or absorbent, or on whether you need to be able to remove the adhesive again at a later date, different adhesives are recommended. The following basic adhesive types can be distinguished:

  •     Polyurethane construction adhesive
  •     Hybrid polymer construction adhesive
  •     Dispersion and water-based construction adhesive

Comparison of Construction Adhesives

  Polyurethane / PU construction adhesive Hybrid polymer construction adhesive Dispersion and water-based construction adhesive
PRO For interior and exterior use For interior and exterior use Does not give off vapours, solvent-free
  Good water resistance Ideal for smooth surfaces Ideal for polystyrene
  Cures quickly Suitable for wet surfaces Can be washed off and removed with water
  Very strong adhesive No shrinkage Good overpaintability
CONTRA Pressing in place and fixing necessary Needs contact with ambient air to cure Needs contact with air to cure
  Expands when it cures   Significant shrinkage when it dries
  Low UV stability   Not water-resistant
      Needs at least one absorbent contact surface

Correctly Applying the Construction Adhesive


Clean the surface before applying the adhesive. Both contact surfaces have to be free of dust, dirt and grease. Use water and dishwashing liquid, or a solvent-free cleaning agent. 

To easily apply the construction adhesive, you need a powerful caulking gun, for example the MG 550. Place the cartridge in the gun, open the tip with a cartridge knife – and then you are ready to start.

Applying the Adhesive

Depending on the size of the surface that is to be glued, we recommend different application methods. If the surface is small and will not carry a large load afterwards, for example a towel holder, applying dots of adhesive is adequate.

Mirrors, baseboards or small shelves need more adhesive strength. Evenly apply the adhesive in several wavy or vertical lines across the entire surface. In bathrooms and outdoors, avoid horizontal ridges of adhesive where water can collect.

Tip: Tip: Place a small wooden stick into the lines of adhesive as a spacer. This ensures rear ventilation while the adhesive is drying. It also makes it easier to remove the object later, as you can easily get into the area underneath the object with a scraper.

MG 550 Caulking Gun

The strong and versatile gun

Drying time and load-bearing capacity:

After approx. 24 hours, your adhesive should have hardened completely. Note the individual manufacturer's specifications on the product. Here you can also find out whether you should fix, weigh down or support the glued object.

For such cases, universal wedges or the practical EHZ PRO and EHZ Easy one-hand clamps work very well.

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