Quantity determination for paint & wallpaper

Hello everyone.

We are about to buy a house.

All wall wallpapers and wooden panels are to be removed, and a woodchip or textured wallpaper is to be applied. It is a residential house with about 135 m², the basement is about 75 m², which would also need to undergo the above-mentioned renovation.

Now to my questions:

How many liters of paint should I >>> approximately <<< calculate?
How many rolls of wallpaper should I >>> approximately <<< calculate?
Is there a calculation formula?

Can anyone help me?

Thanks in advance!!!

Hi,

Paint is relatively simple. The containers state how many m² you can paint with them. However, I would add at least 10% to the calculated m² – I never managed with the quantities and needed a bit more.

Wallpaper is a bit more difficult because you have fixed widths of the strips.
If you have Excel, I can send you a file. Otherwise, as an example without considering windows/doors:

Room height 2.60
Room length 5.20
Room width 4.00

Roll length 10.05
Roll width 0.53

Number of strips: (Room length x 2 + Room width x 2) / Roll width
This must be ROUNDED UP = 35 strips

Number of rolls: Number of strips / ((Roll length / Room height) ROUNDED DOWN)
This must then again be ROUNDED UP = 12 rolls

I hope this is somewhat understandable :)

135 sqm and 75 sqm, do you mean the living area or the wallpaper-painting surface? :)