Expose roof on pitched single storey room

[Gotaquestion]

Hi,

I would welcome some advise on the general feasibility for an idea I have.
House is 6 yrs old. Has single storey room with pitched slate tile roof over kitchen and garage (kitchen and garage side by side).

I would like to knock through from kitchen to garage and use this as one room. As garage is within main house walls are brick / breezeblock and insulated. Floor levels are the same.

I can't add windows on garage wall as this faces onto neighbours property. I don't know but would hope I could fit velux windows in the ceiling to provide light.

The roof is trussed so ideally I would like to remove the truss and ceiling to maximise the light but suspect this will kill the project due to cost.

So - my question is can this be done cost effectively without removing roof and starting again - and if so how ? (purlins / steel work ? )

As a guide the combined room size with pitched roof is approx 22ft wide (and 14ft long over garage , down to 8ft over kitchen).

If it can't then I presume I could fit velux and retain ceiling and plaster board from ceiling up to roof - but I am struggling to visualise how this would work with windows from both sides of the pitched roof ?

Thanks in advance

 

[RedHerring2]

Have a think about sun tunnels or light tunnels:
http://www.velux.co.uk/Private/Products/Sun_Tunnel

 

[Gotaquestion]

Thanks but not would like to see the sky so looking for a window.