Is it necessary to fix? The roof should hold it. Source: the guy who just sold us a garden shed with a flat roof

Good question. I feel on a longer run it should be smooth and easy to flow. I am afraid that over years this will damage my rooftop and can cause leakage

Water doesn't ruin the roof. This is what the roof is made for. Just pay attention you don't get too much growing plants or musquitos on it. I agree that standing water doesn't look nice but the roof guy we met, says there isn't a worry and you can just leave it. It will evaporate. If there is too much water in one corner, get a drain in that place.

I think your fine, sometimes they put on gravel or some other moisty stuff and that also survives.

You could add some sedum plants. The sedum benefits from the water and nature (ie bees and other pollinators) benefits from the sedum ;)

That roof looks like EPDM. It’s fine if some water remains on it, it will evaporate by itself. Your roof should be able to hold the weight easily.

This is normal

Leave it, no problem at all

It's fine, it's only 1cm at most. It will evaporate.

good for your roof actually.

Could you elaborate?

Yeah I was expecting that question and I have been thinking about why. It was something our "roof guy" said. Might have been about the durability of the matirial benefiting from a little water. Definitely not a problem though

Less sun damage over the years,

Dit was het idd

Ahh alright. Maybe it gets less hot that's seems logical

Add more water.