Another Loft Floor Question

Hi,

I am planning to self convert our loft space into a bedroom and ensuite. However, the first thing I need to do is ensure I get the floor adequate for a habitable space. I know the best option is to contact a SE, but availability in my area is slim so want to try and gain an initial understanding.

The roof is a couple/collar style Rafter roof. The ceiling joists are not supported on any LB walls as the roof extends to the ground floor. The first floor has sloping stud walls.

The Joists and Rafters are both 147x47mm (6x2 I think that is?). They are connected together by nailed on wooden plates.

Room length (gable wall to gable wall) is 8.8m and the width of the hanging Joists are 3.4m wide. From existing board floor to centre Ridge is 2.3m.

Looking for the best way I can make this floor suitable. Presumably it would be some kind of support beam running each side from gable to gable under the eaves and hanging new joists (if needed) off the beams down inbetween the existing joists as to not lose too much headspace.

any advice or experience in this is appreciated. Please see attached pictures for reference.

 

Aside from the structural issues, I can't see how you could possibly get a practical habitable space in there.

 

He might be a Dwarf.

 

No, the first thing is where will the stairs go?

 

So the stairs, we were looking at putting over existing stairs (from inside storage cupboard) and coming up in centre of room top level with loft hatch. Then RHS would be storage and ensuite then LHS would be a bedroom. At shoulder height the room is 2.75m wide from rafter to opposing rafter. Then it would be 5.1m from gable to stairs.

 

I can't see how you will fit the stairs in. Have you allowed for the pitch, the head height, the landing and door and the big hole in the loft floor?

 

No-one on this forum would want to pour cold water on anyone's ideas, but - in the absence of a dormer - you would never get a workable loft conversion in that space.
For starters, you'd need a minimum 2m headroom over the stairs, which will impact on your remaining space. Your new floor would take up some headroom. And where would the bed go? How would you get round the bed to make it?

 

Where's your imagination Tony?

 

You could make a case for accepting 1.9m though I don't think that would still be of much help as it applies to the landing area as well.