ᐅ Extensive Green Roof Installation for DIY – Does Anyone Have Experience?

Created on: 6 Jun 2021 16:29
C
Climbee
Dear house-building community,

We want to extensively green our carport. It is basically already prepared with an EPDM membrane. This is something we plan to tackle sometime in the future. We have heard that it’s not very complicated, and since we are not under any time pressure, we want to do it ourselves—next year or the year after.

Now the information gathering begins, and I wanted to tap into the collective knowledge here.

Has anyone done this before? Which suppliers can you recommend? What should we definitely pay attention to? Etc.
Did you use seeds or plants? How long does it take until it actually looks good?

Looking forward to your feedback!
Musketier9 Jun 2021 13:08
No idea if this is comparable.
If it is, here’s a little observation that has been happening in front of my window for days now.

At my workplace, no one has taken care of a warehouse roof for 20 years.
After the drainage stopped working, everything had to be removed.
In about 50 man-hours, the large bushes and roots were cleared out, and for the past three days a team of five has been stripping off the top layers and vacuuming up the entire structure, including the root system.
So far, approximately 50% of the area has been completed (estimated size around 250m²-300m² (2700-3200 ft²)).

A roof like this also requires some maintenance, and you should regularly check what plants have taken hold and started growing there.
i_b_n_a_n9 Jun 2021 14:30
"Extensive (green roofing)" does not mean "no maintenance." It means checking and caring for it once a year.
xxsonicxx28 Mar 2023 12:03
I hope you don’t mind me joining this topic. If it’s not appropriate, please feel free to move it. Thanks.

Unfortunately, our construction company hasn’t managed to install a green roof on our garage in two years. The seeds were always sown during very hot weather, so nothing grew.

Now, over autumn and winter, a lot of moss (I assume that’s what it is) and weeds have appeared. See the pictures.

We would now like to do the greening ourselves.

Should the moss be completely removed beforehand, or can it be left as is?

Regarding Bauder, I noted: Should we just sow seeds or also plant sedum plants?

Green roof garden with moss, low plants, and gravel along the edge of a concrete border.

Green roof with moss and small sedum plants, edge with gravel and metal trim.

Rocky slope with gravel stones, moss, and yellow-brown grasses.

Green ground cover, moss, and gravel stones at the edge of a garden.


Oh, and we live in a rural area surrounded by fields, in case that matters.

Thanks in advance!
rick201831 Mar 2023 11:39
What do you have against the moss? It actually fulfills the exact functions that a green roof is supposed to have.
I would only remove the weeds and tree seeds.
W
WilderSueden
31 Mar 2023 11:42
I would remove the moss and also avoid using pure sedum. There are beautiful mixtures for green roofs with a variety of different plants. These usually require exposed soil during sowing. It can also be worthwhile to work with a mix of established plants and seeds.
G
guckuck2
31 Mar 2023 12:15
I wouldn’t change anything there. Who is even going to look at it? Better spend the money on plants that you can actually see.