to work out the shade cloth needed to get to 50% shade when using polycarbonate with a 20% rating as a start :-Originally Posted by andy
no shade = X,lets say 100
we are wanting to get 100 / 2 = 50
100 - 20% = 80
shade cloth comes in 25-30%,50% and 70-75%
25% of 80 = 20
30% of 80 = 26
50% of 80 = 40
75% of 80 = 60
so 80 - ? = 50
so 80 - 30 =50
from above it can be seen that there is no shade cloth that has the percentage that we require.
I would personally go to the 50% in this case as it is better to have slightly less light than what would be the ideal of 50%,which would give us 60% shading where as 30% would give us 46% shading