How To Grow Grass On A Flat Roof

Brush into place 3.

How to grow grass on a flat roof.

Draining and root stopping 1. 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. Protect your lawn use a wind blanket and cover the roof to protect your grass seeds. For new seeds a gentle approach is key.

We suggest placing plastic planting containers around the edges of the grass for shelter and as another means to weigh the grass down. Pour on the bags of gravel your looking to get just a single layer cover over the entire roof 2. Purchase an underlayment system from a green roof dealer. A simple drip irrigation system connected to your garden hose and a water timer is enough for your grass roof.

Now comes the growing medium which for a sedum roof should be at least 8cm 3in deep and for a roof of wildflowers herbs salad and strawberries at least 15cm 6in deep. Use a sprinkler or hand sprayer with a mist setting to avoid washing away soil and seed. Though i couldn t emulate the thrushes i could plant a sedum roof instead of grass. Soak the soil 4 to 6 inches deep immediately after seeding.

Spread 1 inch of gravel on top of the soil to improve drainage. Roll over the root membrane. Semi extensive green roofs take 12 18 months to establish during which time they will need maintenance. A properly watered lawn is crucial to growing grass.

Lattice fencing can also be used as a windbreak. Suitable waterproofing root barrier drainage and filter layers are necessary. 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. Hand weeding watering and feeding are all necessary and it may sometimes be necessary to replant areas that have failed.

Turf is also heavy and the garage roof s joists were not particularly robust. Next step is planting the grass seeds. Plant the grass seeds. Choose seeds that are the best suited for the area where you live.