Once your asphalt material is laid down, follow the best practices below to ensure it is compacted properly.
3 factors that affect your screed depth
Most common screed error: dropping the match height lower than the main screed
The match height adjusts the extension up or down in relation to the main screed. It needs to be adjusted in order to get the perfect mat. However, if you drop it lower than the main screed, you will get material starvation on your main screed. Soon after you will see shadowing or tearing behind your main screed and the screed will start to dive because it doesn't have any material to ride on.
To avoid this from happening, you should set the extension match height to the point where you start to see a small line coming off the corner of your main screed. Once you have that, you can leave it there, because this will typically roll out easily. However, if you want that perfect look, bump your match height down slightly to remove your line. Don't go too far, however, or you will have the same problem stated above.