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Loft Conversion

loft conversion with attic trusses

Anonymous user 15/03/2024 - 2.45 PM

Our house was built in 1994 and when we bought it a few years ago we noted that the attic space ~ 10m x 3.5 (accessed via Loft ladder for storage ) was fully boarded out with 2 Velux windows and fibre loft insulation in the gaps between the roof trusses against the felt and kept there with plastic sheeting. I would like to explore the options for converting to a habitable space but would like to understand the process for doing so. looking here most conversions are for conventional roof spaces so I would appreciate any advice that can be offered. Trusses - I believe they are called attic trusses, they seem more substantial than normal trusses have a room shape in them and at the highest point they are ~2m above floor level although only 40cm wide before they start to slope down they rise from the corner of the floor to ~1m before sloping to apex . Is this big enough for a habitable space? Staircase, there is room for another flight of stairs into the loft from the first floor landing (however 1 truss would need to be cut ~3M?) Flooring the whole floor has been laid with interlocked chipboard and nailed down, there is no insulation between this floor and the roof below. would this have to be removed to insulate / fire proof? would my first point of call be to an architect or structural engineer to look at the trusses as if I need beams there would not be enough height and as I would need to cut a truss to install a staircase will that affect structural integrity? Can a dormer be installed into attic trusses as it doesn't had a ridge support? There is a water tank on a platform and I had considered replacing my gravity system to a pressurised one but putting the tank in the attic, which job should be done first or at the same time? appreciate any thoughts whether this would be do-able at a reasonable cost and if so where to start?

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2 Answers

Bermuda Construction Ltd

Rating: 5 out of 5
Epsom
Hi, It’s always best to seek the advice of a structural engineer first, they can come to your property and tell you what is possible in regards to conversion. When converting to a habitable loft space, new floors and roof would be built supported by steel work, so unfortunately, the nice flooring the previous owners put in, would need to be replaced, with the necessary insulation and floor joists. A pressurised system would definitely be a sensible upgrade, this can all be done simultaneously with a full loft conversion. Also there is an option for the boiler to be put in the loft space, some people have a built in boiler cupboard in the new space. It seems like your property definitely has the potential! I wish you all the best with the renovations.
Answered15 January 2019
2

Anonymous user

Hi i would advise you to speak to a structual engineer first. Also would it be possible to find out who the truss manfacturer was? Sometimes they have a nylon tag which will tell you. They often can supply more technical info such as weight bearing, and a detailed drawing for cutting a truss to take a loft hatch.
Answered15 January 2019
1