Does your roof have the potential to be a terrace?
Lisa Andrews of Urban Roof Gardens offers this advice: ‘A ten-ace is potentially viable if you have an existing outside space that can be reinforced to be load-bearing, a window that can be changed for a door and new access can be created.’
What if your roof isn’t flat?
A flat roof will be cheaper and easier to work with, but even if your roof is pitched there are options. An external wall can be Built up to create a flat surface or you could jet an ‘inverted dormer’ -that’s where they chop a chunk out of the roof.
How big will it be?
According to Andrews, ‘the amount of space often depends on privacy issues (such as a terrace overlooking a neighbour’s property). If so, the boundary line is often brought back. Screening is also often suggested in the form of opaque-glass panels.’ And the hatch or stairs on to the roof will eat up some of the space.
How much will it cost?
A basic roof terrace may cost upwards of £7,500, but it’s possible to spend up lo £45,000. Andrews reckons in the long term it will pay for itself, if not make you a profit; properties with a roof terrace are worth between 10 and 25 percent more after the work is done. Remember to save some of the budget for furniture and accessories.
Before you start…
Find out from your architect whether you will need planning permission, then con¬tact the local planning authority to make an application. Even if what you’re planning doesn’t require permission, always tell your neighbours what you are intend¬ing to do -it’s a goodwill gesture that will make them less likely to complain. Companies such as Urban Roof Gardens after a full service, from design and con¬struction to planting .The other option is to
contact an architect who can take care of the planning permission and hiring builders. Try and use someone who has successfully worked in the area as they will have already dealt with the local council. The RIBA (www.architecture.com) offers a client advisory service to help you find someone suitable.
Now accessorise
Andrews says: ‘Great fun can be had with the addition of illuminated lightweight outsize planters and shade sails for ultra-sunny terraces. There is a wide choice of fire pits which will warm you as the day-time temperatures fall and grill your sup¬per at the same time.’
The main things to think about are:
Planting Go for plastic pots and mix normal compost with a product such as perlite or hydroleca to minimise the weight on the roof while still retaining water well. These are available from all good garden centres.
Bear in mind the aspect of the terrace-sheltered terraces can have some success with Mediterranean plants such as olives and even oranges; for windy, exposed terraces, grasses and bamboo cope well.
Furniture Go for lightweight pieces that are easy to maintain and if they’re flat-pack, assemble them on the terrace.
Lighting This is the key to creating atmosphere after dark and should be thought about during the design process. A couple of waterproof power sockets might be useful for additional appliances. Circuit breakers and lighting specifically designed for the outdoors will prevent any shocks.
Useful contacts
Urban Roof Gardens 42 The Grove, W5 (0800 652 8848/
www.urbanroofgardens.com
Time Out, April 18th-24 2007