Estimating Guides - Decra Roof Systems

Decra Classic Tile & Noxite Tile Estimating Guide

 

  1. The Tables below are for estimating purposes only. The figures quoted are based on nominal tile dimensions and are subject to normal manufacturing tolerances.
  2. Count all fractions of tiles as whole tiles.
  3. The table assume a simple mono-pitch or duo-pitch roof construction. More complicated roof structures will entail an additional wastage. We suggest an additional estimating figure of approx. 1.32 tiles x total linear metres of hips and valleys.

 

Rafter length to suit full
courses of tile including fascia*
Number of tile courses
required
Roof  length using 
barge  covers
Number of tiles 
required
0.330 1                              1.365                       1                        
0.695 2 2.625 2
1.065 3 3.885 3
1.435 4 5.145 4
1.805 5 6.405 5
2.175 6 7.665 6
2.545 7 8.925 7
2.915 8 10.185 8
3.285 9 11.445 9
3.655 10 12.705 10
4.025 11 13.965 11
4.395 12 15.225 12
4.765 13 16.485 13
5.135 14 17.745 14
5.505 15 19.005 15
5.875 16 20.265 16
6.245 17 21.525 17
6.615 18 22.785 18
6.985 19 24.045 19
7.355 20 25.305 20
7.725 21 26.565 21
8.095 22 27.825 22
8.465 23 29.085 23
8.835 24 30.345 24
9.205 25 31.605 25
9.575 26 32.865 26
9.945 27 34.125 27
10.315 28 35.385 28
10.685 29 36.645 29
11.055 30 37.905 30
11.425 31 39.165 31
11.795 32 40.425 32

 

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