I think the newly added value "plants" is badly chosen - it's impossible to tell from the value itself that it is supposed to represent a "roof" (I'm also not sure whether it can actually be called that) as shown in the picture. --Tordanik 14:51, 16 June 2013 (UTC)
- That is not a roof at all.
- But what about a green roof, (live) sod roof, living roof or, roof garden? —Michael Z. 2014-10-09 21:26 z
Default roof material
- I don't think there is a standardized default material at the moment. My own implementation prioritizes the roof:material on the individual building:part, then falls back to that of the enclosing building, and ultimately defaults to a tiled roof. A case could be made to make the default dependent on the building material, or even the country/region instead. --Tordanik 17:41, 31 December 2014 (UTC)
Plastic (PE or similar) roofs are common to cover garden huts etc. here. I will add roof:material=plastic for this, it is already used 142x. It looks similar to roof:material=eternit, but it's usually partly transparent.
I also want to add a similar one to plastic and bitumen, but made of asphalt. This is similar to tar_paper, but it is usually corrugated, stronger and doesn't need the underside covered continuously (sorry, I couldn't find the English word). It is clearly distinct from tar paper. I propose material=asphalt, it has 90 uses in taginfo. --V0174 (talk) 11:46, 3 December 2016 (UTC)
I too am considering that tar_paper is perhaps too all-encompassing. In simple terms, in the UK a bituminous fibre-based sheet is placed on the roof before the tiles or slates go on (tar_paper) but when the bitumen-impregnated fibre sheet is used as the actual exterior roof material it is reinforced with the addition of asphalt and an aggregate layer, having a rough, hard-wearing texture and is known colloquially in the UK as roofing felt. Perhaps the addition of roof:material=roofing_felt (or similar distinctive tag) would allow for clear identification between the two materials? Whilst tar_paper does indeed cover it there is a significant distinction between sheeting intended to form an impermeable membrane beneath slates/tiles, etc. and sheeting designed to form the roof layer exposed to the sky.
https://en.wikipedia.org/wiki/Tar_paper https://en.wikipedia.org/wiki/Asphalt_roll_roofing (what in the UK is commonly colloquially referred to as "roofing felt")
Edit: A further thought occurs that, when roofing felt is applied it is usually over wooden boards or the like so presumably the correct tagging would be something like roof:material=wood, roof:surface=roofing_felt/tar_paper...?
An asphalt shingle is a type of wall or roof shingle that uses asphalt for waterproofing. It is one of the most widely used roofing covers in North America.