raising the roof on a house
Discussion
just a few quick questions...
how expensive is it to raise the roof by 18-24 inches?
house isnt very big. will get dimensions if needed.
this would enable a room to be put in the roof space.
there is no room to extend outwards so the only possibility is up!
how easy is it to abtain planning permission??
it wont be over looking anybody.
ball park figures would be good
any pointers/advice greatfully appreciated
thanks,
nick.
how expensive is it to raise the roof by 18-24 inches?
house isnt very big. will get dimensions if needed.
this would enable a room to be put in the roof space.
there is no room to extend outwards so the only possibility is up!
how easy is it to abtain planning permission??
it wont be over looking anybody.
ball park figures would be good
any pointers/advice greatfully appreciated
thanks,
nick.
clarkmagpie said:
just a few quick questions...
how expensive is it to raise the roof by 18-24 inches?
house isnt very big. will get dimensions if needed.
this would enable a room to be put in the roof space.
there is no room to extend outwards so the only possibility is up!
how easy is it to abtain planning permission??
it wont be over looking anybody.
ball park figures would be good
any pointers/advice greatfully appreciated
thanks,
nick.
Might be easier to build a complete new roof with the room incorporated? Use the old tiles.how expensive is it to raise the roof by 18-24 inches?
house isnt very big. will get dimensions if needed.
this would enable a room to be put in the roof space.
there is no room to extend outwards so the only possibility is up!
how easy is it to abtain planning permission??
it wont be over looking anybody.
ball park figures would be good
any pointers/advice greatfully appreciated
thanks,
nick.
It sounds like you mean a design such as a modern town house, where the loft space is usually 1 or 2 bedrooms, but the house is only a couple of feet taller than traditional designs.
To achieve that, the wall plate (that the roof trusses sit on) is built a couple of feet higher than normal, and the trusses are manufactured to sit on the plate (where that would traditionally be cieling/loft height), but with a two feet hanging drop, at which height becomes the new ceiling/loft room floor. So basically, instead of trianglular trusses, they are made with an extra suspended rectangle on the bottom.
In your case, it sounds like a very big job, because the loft floor (bottom joist of trusses, or small joists if it's a cut-roof) will need to be replaced.
So the structual work entails removing the roof, including loft floor/first floor cieling, building up the two skins of the external walls approx two feet to form raised wall plates, including building in new larger joists where the existing loft floor was, then cutting in new rafters with some complicated bracing to the joists to prevent the walls spreading under load, and building up the gable ends. Or it may be specified that you will need to use new tusses, with a hanging floor design as described above.
As for cost, well now's the time to get some quotes, there's many carpenters looking for work. On a small property I would think in the region of 15-20k allowing for deflated prices due to builders hungry for the work.
To achieve that, the wall plate (that the roof trusses sit on) is built a couple of feet higher than normal, and the trusses are manufactured to sit on the plate (where that would traditionally be cieling/loft height), but with a two feet hanging drop, at which height becomes the new ceiling/loft room floor. So basically, instead of trianglular trusses, they are made with an extra suspended rectangle on the bottom.
In your case, it sounds like a very big job, because the loft floor (bottom joist of trusses, or small joists if it's a cut-roof) will need to be replaced.
So the structual work entails removing the roof, including loft floor/first floor cieling, building up the two skins of the external walls approx two feet to form raised wall plates, including building in new larger joists where the existing loft floor was, then cutting in new rafters with some complicated bracing to the joists to prevent the walls spreading under load, and building up the gable ends. Or it may be specified that you will need to use new tusses, with a hanging floor design as described above.
As for cost, well now's the time to get some quotes, there's many carpenters looking for work. On a small property I would think in the region of 15-20k allowing for deflated prices due to builders hungry for the work.
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