Flat roof balcony

[bb48]

I wish to convert my asphalted flat roof into a family balcony. The flat roof is above a shop and I live on the first floor to the rear of the shop.

I have heard that promenade tiles are used for this purpose. My questions are:

1. Would I need permission from the landlord/freeholder below? Does the council have to be informed?

2. Is it a job for an average but keen diyer?

3. How do I find out if it is safe to lay these tiles on the asphalt roof? The asphalt roof appears to be in a fairly good nick.

4. The finishing of the edges: I am considering laying the tiles to about 30cm away from all four edges, including the drain running along our flat. I would be interested in the ways of finishing the edges and the open drain.

Finally, please advise who sells these tiles or the alternatives to the tiles.

 

[breezer]

you should find out if it can take the weight first

 

[bb48]

you should find out if it can take the weight first

I will approach the freeholder seeking, his approval and if available, a copy of the original specifications on the structure of the flat roof support.

Assuming it can take the weight (the weight of the tiles, and an absolute maximum weight of six averagely weighted people, totalling 400kg approx. in an area of 6m x 5m, I need to know where I could buy these materials from in London.

Are there any alternatives to promenade tiles?