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Calculate the number of rolls of wallpaper needed to paper.

As a general rule a standard roll of wallpaper speed boat measures 0.53 m by 10.05 m long.
The rule of how to calculate the wallpaper roll:



1. In principle, you have to calculate the perimeter of the room to be papered subtracting the windows and doors. In the same way you have to calculate the wall height by adding 10 cm to cut each strip.


2. Once the perimeter has been calculated, you can determine the exact number of panels needed. For this, divide the circumference by the width of cloth (0.53 m). Consider only the integers. Increase by 1 the remaining decimal.

3. After this, take the long roll (10 meters) and divide by the height (do not forget to add 10 cm). Finally, and for the number of rolls needed, divide the number of panels between the number of panels that make up a roll.

the case of a wallpaper without case
1. Calculation
perimeter P = Perimeter
P = (L + l) x 2 - (width of doors & windows)
2. Calculation of the number of panels needed
P / 0.53 = x: No need
cloth 3. Number of rolls needed
10.05 / h = n ° of cloths per roll
x / y = # of rolls needed

Example:
for a room with two walls of 3.50 meters and two walls of 4.10 meters and a height of 2.95 meters, 0.80 meters door and a window width of 1.25 meters wide. Measure the perimeter
(3.50 +4,10) x 2 = 15.20 meters
Deduction of openings: 15.20 m - (0.80 +1.25) = 13.15 meters. Number needed
netting 13.15 m 0.53 = 25 height
cloths each strip of paper: 2.95 m + 0.10 m = 3.05 meters. Number
cloths on a roll: 10: 3.05 = 3
number of rolls needed: 25: 3 = 8.33 rounded to 9 rolls.
if frames precea additional 1 or 2 rolls


Estimate the number of rolls in the case of a paper wall and jumped straight case:

case of a straight case wallpaper
P = (L + l) x 2
P / 0.53 = x: No cloth needed
10.05 / (h + case) = y: No cloth achievable with a roll
words x / y = number of rolls needed

case of a married wallpaper jumped
P = ( L + l) x 2
P / 0.53 = x: No need
cloth 10.05 / (h + case) = y: No cloths per roll achievable
2
Soit x / y = number of rolls needed

wallpaper rolls are more currents of 10.05 m long by 0.53 cm wide and with a case of 53 cm (repeat drawings every 53 cm)
Imagine simply that this placing tiles 53 cm x 53 cm!
have to count the number of tiles that will have to use in the following cases:
- all traces of a slab cut can not be reused
- on a roll of 10.05 m there are 18 tiles of 53 cm
whole - in If a wall of 2.50 m high, used 2.5 / 0.53 = 4.7 tiles which is the same 5 tiles
A roll of 10.05 m can be placed 18 / 5 = 3.6 panels ( or soladamente 3 if you do not want a horizontal case)

No horizontal case

With horizontal case

Example:
For a room of 15 m in circumference that paper we accepting a horizontal case:
- the number of panels is 15 m, 0.53 m (width of cloth) = 29 panels
- the number of tiles is 29 (cloth) x 5 (tiles and cloth) = 145 tiles
- as there are 18 tiles per roll, we have to buy rolls 145/18, rounded to the nearest whole number for a total of 9 rolls.