The best time for maintenance of gravel roads is in the spring when winter road treatment has ended and frost has left the soil.
It is important to make sure that the ditches by the road are sufficiently deep so that the water does not remain on the roadway, but runs down into the ditches. There is a significant difference between crushed rock products and natural gravel. Crushed rock has more splintery particles that bind the material together better. If you use natural gravel products the particles in the material are more circular, this leads to a poorer result from a compaction standpoint and the material does not remain on the roadway but rolls out to the edges.
The size of our material is usually specified in millimeters. This means for example that macadam 11/16 is a crushed rock material where most particles are
between 11 and 16 mm
If you intend to bind the road with salt this should be done immediately after
the new wearing course has been applied. NCC Ballast has the possibility of arranging levelling and salting.