Plastic planters, along with fibreglass imitations, weigh much less than concrete, stone or terracotta containers.Īvoid placing pots in the centre of a roof terrace and don’t have too many (fewer containers look better). If weight is an issue, there are obvious things you can do. In order to be certain, consult a structural engineer who will calculate what you can – but more importantly what you can’t do – on an older-style roof garden. How much weight it can take is debatable, and it’s likely you won’t find the information on the title deeds.
When it comes to older properties, chances are the space was originally intended to be somewhere to hang out the washing, or access the roof. Roof gardens and terraces, however, are a very different matter.ĭiscovering the load-bearing capacity of a purpose-built roof garden is easy – you simply need to look at the title deeds. With tiny balconies tacked onto the sides of flats or townhouses you won’t need to worry, as they will have been specifically designed to take the weight of a few pots, containers and a bistro dining set.
Weight is the most important practical consideration when planning roof garden ideas. Most importantly, don’t put yourself at risk by teetering over high edges to fix screening – call in a specialist builder or a rope access company to tackle it for you. Don’t site it across prevailing winds unless there are a few holes in it, otherwise turbulence will smack over the top and down on you with great force. Glass is commonly used as a balustrade and wind buffer on roof terraces as it provides uninterrupted views. Instead, choose permeable trelliswork, hit-and-miss cedar battens arranged horizontally, or perforated sailcloth that filters the wind so only a subtle breeze is felt on the leeward (downwind) side.
Unless there is protection from surrounding buildings, solid windbreaks aren’t a good idea as they block out the view, plus the wind stress on fixings is high. Many plants can cope with it, but you might need some shelter if you want to enjoy the space all year round. Wind is a common problem on roof gardens.
0 kommentar(er)
