www.erfurt.com: Tips & tricks

Have questions about our products, their use, or any general questions about personal wall-design? You can find the answers to the most frequently asked questions (FAQs) right here. Just in case your question isn’t answered here, we’ll be glad to answer it by e-mail.

How can I wallpaper an archway?: First, hang the stretches of wallpaper beside and above the archway with ca. 2-3 cm overlap. Then, cut several slits into the overlapping paper, fold over and adhere in the archway. Finally, adhere the cut-out soffit-strip into the soffit. It is recommended that when using heavier wall coverings or patterned papers, to use corner-molding that can be fit easily onto rounded surfaces.

Expert: ERFURT-Customer service
Which ERFURT wallpapers may be used in rooms with high moisture?: All ERFURT wallpapers may be used in any room of your home. In the bathroom, the water should not be allowed to spray onto the wallpaper (directly inside the shower) or the paste will loosen. Water splashed from the tiles or onto the ceiling will not loosen the wallpaper.

Expert: ERFURT-Customer service
How can I inspect the base surface?: Inspect base surface for
Testing methods
Characteristics
Remedy
Alkalinity
Moisten with distilled water and place a strip of indicator paper on surface
If the pH level is greater than 8, the base surface is alkaline
Allow to dry
Efflorescence
Visible to naked eye
White salts are often visible
Determine cause and remove. Allow to dry using ventilation and heat. Brush away dried salt granules
Moisture
Visible to naked eye
Visibly moist surfaces or appearance of discolourations or water rings
Determine cause and remove. Allow to dry using ventilation and heat
Surface strength
Rub with hand
Scratch with a hard, sharp object
Dusty or chalky grit
Wash surfaces thoroughly with water
Fungal decay
Visible to naked eye
Dark fouling
Determine cause and remove, may need to remove and treat chemically
Cracks
Visible to naked eye
–
Depending on type of crack, spakle entire surface, then reinforce with crack covering or elastic fabric
Absorbency
Moisten with water
Too absorbent:
turns dark quickly
Not absorbent enough:
Water forms beads
Too absorbent:
apply primer
Not absorbent enough:
sand or apply primer
Sinter layers
Scratch or sand layer, then moisten with water
In case of dry base surface: glossy surface and minimal absorbency. After water test, scratched area turns darker
Sand away sinter layers

Expert: ERFURT-Customer service

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Inspect base surface for	Testing methods	Characteristics	Remedy
Alkalinity	Moisten with distilled water and place a strip of indicator paper on surface	If the pH level is greater than 8, the base surface is alkaline	Allow to dry
Efflorescence	Visible to naked eye	White salts are often visible	Determine cause and remove. Allow to dry using ventilation and heat. Brush away dried salt granules
Moisture	Visible to naked eye	Visibly moist surfaces or appearance of discolourations or water rings	Determine cause and remove. Allow to dry using ventilation and heat
Surface strength	Rub with hand Scratch with a hard, sharp object	Dusty or chalky grit	Wash surfaces thoroughly with water
Fungal decay	Visible to naked eye	Dark fouling	Determine cause and remove, may need to remove and treat chemically
Cracks	Visible to naked eye	–	Depending on type of crack, spakle entire surface, then reinforce with crack covering or elastic fabric
Absorbency	Moisten with water	Too absorbent: turns dark quickly Not absorbent enough: Water forms beads	Too absorbent: apply primer Not absorbent enough: sand or apply primer
Sinter layers	Scratch or sand layer, then moisten with water	In case of dry base surface: glossy surface and minimal absorbency. After water test, scratched area turns darker	Sand away sinter layers