Lean-To Roof - Window Well or Not?

Hi, I checked the current draft plans from our architect and the cill will be raised to 97cm, so should be within the 110cm escape height assuming the window frame thickness is similar to what we have today.

Do you have a rough feel for how much different we are talking in cost between the two options please - hundreds / thousands etc?

The general view from friends and family is also in favour of the window well so it is really now hinging on cost, and how much further it would push the velux windows down the roof.

Thanks,
Pete
 
Doubtful anyone here could give you a price difference on the two methods, though Nosey is probably right in that the cut-outs would be more expensive, but by how much.....?
Best course might be to get the plans submitted to Planning as they are (without cut-outs?) and in the meantime, perhaps sound out your chosen builders on what the cost difference would be.
In practice, it won't make any difference one way or the other in terms of the Planning Permission.
 
If they are lead lined then the extra cost will be four figures.
Regular flattie with felt then the difference could be in the hundreds.
Your internals will look better with a ceiling right the way across in line with the window trough bottoms.
Shove the Velux further down, nay bother.

New window, masonry, window board and plastering - £800 to £1000.

Roof construction with troughs, trimming timbers, ply, flattie, flat roof insulation, verges, lead flashings, false ceiling etc - £2000 and way beyond if troughs are entirely in lead.
 
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That's monstrous either way.

I'd use a flat roof or a false-pitched roof and one or two lanterns.
 
We did look at doing that but our attached neighbour is already planning on doing a mirror image (with window well) over their kitchen and dining room so we wanted to keep it similar, they already have permitted development approval. Also if we put in the flat roof with lanterns it will likely end up in the shadow of their pitched roof for some of the afternoon.
 
You could have a raised tie mono truss here depending how high the ceiling needs to be raised above wallplate. If you did it with trusses the manufacturer could supply two truss types one with the top cut off which will automatically create your flat areas below windows.

This method would be straight forward as the trusses could drop onto hangers built into the existing masonry. The only hand cut areas would be where the roof lights are but if you went for 550 wide they wouldn't even need trimming.
 
Krangers said:
You could have a raised tie mono truss here depending how high the ceiling needs to be raised above wallplate. If you did it with trusses the manufacturer could supply two truss types one with the top cut off which will automatically create your flat areas below windows.

This method would be straight forward as the trusses could drop onto hangers built into the existing masonry. The only hand cut areas would be where the roof lights are but if you went for 550 wide they wouldn't even need trimming.
Click to expand...
How does a truss roof system work when the OP's proposing a vaulted fella....? I doubt it would be any less work than a regular cut roof. In fact, I'd say it would be more fuss.
 
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