flat roof with a lantern for the bigger light value ,all really depends on which direction the room is facing ,cost wise depends on materials there are upvc triple domes on the market that are just as competitive than 2-3 velux and of course the fitting labour wise is less expensive

Hello There,

Both options are quite straight forward and not too expensive, we are specialists in Orangeries and also build Tiled Sunrooms.

ORANGERY

The roof for the Orangery must be made with the correct structural integrity ie 8 x 2 Joists with heavy duty joist hangers, doubled up and coach bolted, timber ferrings then OSB Board with Firestone Rubber or GRP Finish.
Topped of with a Double Hipped Edwardian Atrium. If this is Built with 50% Brickwork 50% Windows and the Roof is 75% translucent it wont require building regs

TILED ROOF

Depending on the Conservatory projection you would use 8 x 2 or 6 x 2 timbers in a Traditional Build Lean-to roof configuration. If you wanted an Edwardian Style Roof, this would require Structural Calculations and Pre-made Trusses
Velux's as required. Building Notice would be required for this

However always put in a Provisional Development Enquiry into planning just to protect yourself

Good Luck

Vince Lowes
Ambassador Building and Construction/ DSW(NE)LTD

mme, to start with you would need building regulations on a tiled roof and that would have to include all the existing, footings,insulaion, floor construction, it is very difficult to make the existing build comply so an orangery is the way forward, you will need steel to sit the glass on to make sure it does not move.