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Do you have any more details on this?
There's a couple of options that I'm looking at, but it's basically
- Double layer of pond liner
- Water drainage / storage sheet
- Filter / protection fleece
- Expanded clay aggregate
- Probably a mix of basic compost & Innes No. 3
- A mix of established plants & some seeds
There's will be cutouts for any excess water, and guttering to channel it away.
I should probably do some maths on the weight, and ability of the roof / walls to support the weight.
The rafters / studs are 2x4s on 360mm centers, and the roof has a span of 1440mm. Back of the envelope calculations, finger in the air & wishful thinking suggests that I should be OK by an order of magnitude.
As to how long it will last - the roof, or the whole thing? Quite a while, I hope...
- Double layer of pond liner
NotThamesWater-
I should probably do some maths on the weight, and ability of the roof / walls to support the weight.
Bok bok bok BWAAAAAAAAAAAAARK, Bok bok
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Cheers. I recently redid out shed roof, so that will be fine for a good while, but we've got a flat roof outhouse that if it ever needs doing I'd like a living roof. And/or if we ever get an extension I'd like one there too.
Definitely be curious to know what the final m² cost of the roof is.
As to how long it will last - the roof, or the whole thing?
The roof.
@Silly_Savage - that's a good link.
Dammit
hugo7
Do you have any more details on this? It's something that really appeals to me.
So would be interested to understand how you're going to deal with the weight, moisture, etc. And what the life expectancy is.