Over a period of time lawns suffer an increased buildup of organic matter adding to the thatch layer. This can be caused by grass clippings, rotting stems and shoots, in fact any dead or decaying organic matter.

If this build up is allowed to continue without any removal program such as scarifying or verticutting, the thatch build up will become too excessive and have an adverse affect on the health of the lawn. Shallow rooting, moss and dry patch are among many side effects of a heavy thatch infested lawn.

Immediately after scarification has been carried out is the ideal time to undertake aeration, over seeding, and top dressing as it has created the perfect seed bed.