How To Grow Grass On A Flat Roof

Roll over the root membrane.

How to grow grass on a flat roof. Next step is planting the grass seeds. We suggest placing plastic planting containers around the edges of the grass for shelter and as another means to weigh the grass down. Though i couldn t emulate the thrushes i could plant a sedum roof instead of grass. On a visit to ben law s woodland workshop one spring i was impressed by the yellow flowering sedum cascading down the roof and the nest of baby thrushes in the eaves.

Soak the soil 4 to 6 inches deep immediately after seeding. Brush into place 3. Semi extensive green roofs take 12 18 months to establish during which time they will need maintenance. Turf is also heavy and the garage roof s joists were not particularly robust.

Use topsoil on your roof and you could easily. Lattice fencing can also be used as a windbreak. Protect your lawn use a wind blanket and cover the roof to protect your grass seeds. Use a sprinkler or hand sprayer with a mist setting to avoid washing away soil and seed.

Hand weeding watering and feeding are all necessary and it may sometimes be necessary to replant areas that have failed. A properly watered lawn is crucial to growing grass. Spread 1 inch of gravel on top of the soil to improve drainage. For new seeds a gentle approach is key.

An all purpose soil less peat free potting mix is fine for growing herbs and other edibles but mix in plenty of perlite to both improve drainage and save on weight. Plant the grass seeds. Purchase an underlayment system from a green roof dealer. Pour on the bags of gravel your looking to get just a single layer cover over the entire roof 2.

Growing grass on your rooftop requires at least 6 inches of growing medium held in place with a border made of wood or other lightweight material. Roof gardens can be windy places we sand the grass with kiln sand once it is installed remembering to place more around the edges to prevent flapping from the wind. Draining and root stopping 1. Suitable waterproofing root barrier drainage and filter layers are necessary.