Green Roofing Maintenance on Flat Roofs

Green Roofing Maintenance on Flat Roofs

Living roofs are gaining more popularity due to their increased durability and positive impact on the environment with cost-effectiveness. When correctly constructed, there is a low maintenance need for green roofs. It means green roof benefits can be enjoyed with no huge spending of money and time for their keep up.

However, maintenance tasks for a green roof require a thriving living roof. Below are the main requirements for maintenance of the living roof to ensure a healthy and lush looking without any damage.

Steps For Green Roof Maintenance

Although maintenance is free for a widespread green roof, there is always a need for minor care for your roof garden. It included weed removal carried through wind and fertilizer application during different times within a year.

Special care by flat roofing companies should be given during such maintenance that avoids plants from damaging by walking on them. They need to be strong enough for this compensation. Another point’s needs for care of biodiverse and Sedum roof are:

1. Inspect The Roof Twice A Year

Sedum-based roofs must be checked twice yearly for seeds and weeds brought via wind and manually removed such unwanted vegetation. The preferable season is autumn and spring. Chemical pesticides are not recommended to be used for biodiversity enhancement.

Additionally, check the proper functioning of the drainage system. Also, remove any blown leaves that get into drains and gutters. Moreover, the inspection number depends on greenery within your roof vicinity.

2. Check Weeds Growth:

To keep green roofs growing and healthy, weed out unwanted plants regularly. If weeds are left unchecked, as in a regular garden, problems can be caused by the fast overcrowding of plants.

Weeds grown on living roofs are commonly classified as moss, grass, and tree seedlings. Sedum is recognized for quickly spreading, meaning weeds often don’t have a chance of growing or holding; thus, weeding the required amount would be less.

3. Fertilize Your Living Roof

The green roof needs to be fertilized twice a year. And best fertilizing period is early September and late April. Fertilization takes place for strong and healthy planting to ensure a homogeneous nutrient supply.

4. Check Intrusion Of Unwanted Plants On The Living Roof

Encroachment of plants on green rood at places where their growth is not needed, like gutters, chimneys, pebbles, and drain pipes. After all, it’s normal since plants act as a wild entities. But with no intervention, such plant encroachment is harmful to roof maintenance, causing blockages and leaks in your home’s drainage system. Plant encroachment on the green roof must be checked every 2 or 3 months, and necessary to move plants when required.

5. Relocation Of Encroached Plants

Unwanted plant encroachment can be prevented by keeping an eagle on vegetation at unwanted places once you see the growth of sedum weed or another type of plant in areas not needed. Then immediately remove them and shift them to refill such places upon green roofs lacking vegetation.

Sedum is the most common green roof plant due to its growth flexibility in various areas. Thus, plants need to easily re-adapt quickly to newer spaces. It means plants only relocated and not just removed from green roofs.

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6. Irrigate Living Roof Regularly

Well-rooted Sedum requires no extra water. However, just in the case of extreme dry situations, there is a need to water your living roof. Apply an irrigation system when recommended based on the climate zone where your green roof is located. After every two weeks, water your living roof without rain.

It is problematic for roofs to have wildflowers as they start stressing if they remain without rain for two weeks and would die by the second weekend. Major signs are dropping flowers, wilting leaves, and soft texture, which can be spotted easily. Try to soak them in the evening with constant checking after a day in this case.


Regular care is required for living walls, living roofs, and roof and podium gardens to meet divergent roof needs from installation. Such treatment is necessary to keep the living roof free from weed growth, stunning, and for residential safety with waterproofing, drainage, and irrigation at their peak.

The above-provided information will be the best guideline to sustain your living roof. However, it’s important to keep an eye on maintenance needs while purchasing green rood since all roofs vary based on upkeep requirements. In addition, always ask for professional advice before buying your living roof.