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Estimating Table 

Eaves

Length in mm(Le) Number of tilesRequired (Ne) Number of RidgeTiles Required RafterLength in mm (Lr) 320mm batterncentres (Nr) 345mm batterncentres (Nr)

1832 6 5 2000 7 6

2132 7 5 2200 7 7

2432 8 6 2300 8 7

2732 9 7 2400 8 7

3032 10 7 2500 8 8

3332 11 8 2600 9 8

3632 12 8 2700 9 8

3932 13 9 28000 9 9

4232 14 10 2900 9 9

4532 15 10 1000 10 9

4832 16 11 3100 10 9

5132 17 12 3200 10 19

5432 18 12 3300 11 18

5732 19 13 3400 11 10

6032 20 14 3500 11 11

6332 21 14 3600 12 11

6932 22 15 3700 12 11

7232 23 16 3800 12 11

7532 24 16 3900 13 12

7832 25 17 4000 13 12

8132 26 18 4100 13 12

8432 27 18 4200 13 13

8732 28 19 4300 14 13

9032 29 20 4400 14 13

9332 30 21 4500 14 13

9632 31 22 4600 15 14

9932 32 22 4700 15 14

10232 33 23 4800 15 14

10532 34 24 4900 16 15

10832 35 24 5000 16 15

11132 36 25 5100 17 15

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