For New Lawns, spread good clean topsoil to a depth of 15cm (6”). Break up any clumps and rake level. For repairing old lawns, mow grass close to the soil surface. Rake vigorously to remove clippings and accumulated thatch. Add top soil to fill in any low spots then rake smooth. Grass seed can be applied in spring when the soil warms and again from mid August to late September. Note that cold soil can greatly extend the normal germination time. Sow grass seed at a rate of 500 g per 25 sq. M (1 lb/250 sq. ft.) Apply twice at half rate over the area in a criss-cross pattern. Rake the soil and seed lightly to cover. Roll once with a roller at half capacity if the soil is light. Water with a fine spray for two or three weeks to keep the seed moist. Mow for the first time when seedlings reach 8cm (3“) height.