Therefore, the tapered insulation starts on a dead level surface with a low point that is in a drain line. The slope goes from that point to a high point either at the roof perimeter or at a point between two drain lines.

What is tapered insulation?

What is tapered insulation? Tapered insulation is a type of roof insulation that is tapered towards one end creating a very gradual, but imperceptible gradient. This is a fantastic and effective way to create falls for your flat roof.

Is tapered insulation more expensive?

Finally, tapered insulation is a more cost-effective choice in most cases because you won't need a structural fall. This reduces the overall cost of the roof if you install the insulation along with a roof replacement (or a new build), and it reduces labour costs at the same time.