Which wallpaper adhesive should you choose for the right surface?

There are different types of wallpaper paste available, but it’s crucial to select the right paste that matches both the wallpaper type and the surface. It’s advisable to seek guidance from a local wallpaper specialist or DIY centre. The Decorazzi EcoMural wallpaper is classified under the ‘heavy vinyl wallpaper’ adhesive category.

SPECIFICATION (general) WALLPAPER PASTE:

  • Use: interior walls
  • Average yield: approx. 6 m²/kg
  • Surfaces: plaster, gypsum board, stone, concrete, cement, wood
  • Minimum application temperature: 10 °C
  • Maximum application temperature: 30 °C

Always check the current specifications on the packaging.

Which wallpaper adhesive matches which type of surface?

1. Absorbent substrates
When working with absorbent surfaces, such as a porous wall, it is important to pre-treat it with a primer or sealer. Allow 8 hours drying time, then use an adhesive suitable for “lightly absorbent substrates.”

2. Lightly absorbent substrates
On lightly absorbent surfaces, the best choice is a ready-mixed adhesive specifically for heavy vinyl wallpaper. Recommended products include:

  • Perfax wall adhesive “Vinyl & Textile”
  • Flexxs‑Medium
  • Bison Wand & Klaar wallpaper adhesive Vinyl/paper
  • Vescom 2500

3. Closed, non‑absorbent substrates
For closed substrates such as lacquered surfaces, external wall paint, or metal, select an adhesive designed for heavy vinyl on sealed surfaces. These adhesives are very strong and prevent splatters on the wallpaper. If any adhesive contacts the wallpaper, remove it immediately with lukewarm water. Recommended products include:

  • Vescom 3000
  • Flexxs‑High

How to determine the water absorption of a wall

You can easily test the absorbency of your wall by wiping it with a damp sponge:

  • Does the wall absorb the water quickly and completely? Then it’s an “absorbent substrate,” and it must be primed or sealed first. This is always necessary on newly plastered walls. After about 8 hours, you can begin wallpapering using adhesive for “lightly absorbent substrates.”

  • Does the wall become only slightly damp? In that case, opt for wallpaper paste suitable for “lightly absorbent substrates.” This also applies to walls painted with matt emulsion.

  • Does water flow off in thin runs? This indicates a sealed, non‑absorbent substrate, for which you need paste specifically formulated for sealed surfaces. Always follow the directions on the packaging.