Reinforcing Floor Joists For Loft Conversion

The loft room will also have to be separated by a fire door either at the top or bottom of the new stairs.

Reinforcing floor joists for loft conversion.

There is a 1 2 plywood sub floor on top of the joists. A new floor system is installed using a frame trimmer joists to support the floor joists that span the width of the loft. Clear the joist spaces. Clearing the loft area of all debris insulation struts and temporary boards to expose the ceiling boards.

6 loft conv rev 2 2007 support to loadbearing elements transferred from the roof partitions and the new floor. I want to finish this space with drywall walls and ceiling and also a drywall ceiling in the garage under the joists. I suspect that the depth of the loft floor rafters are only 90mm. A basic floor system is installed in about 10 stages from preparation to boarding the floor.

3 3 in the majority of instances the existing ceiling joist member will be inadequate for the imposed loadings from the new floor construction. So i m moving into a new property soon and i m looking at making use of the loft as it s a pretty decent size and i need a place for a workshop activities room. The joists span 20 and are 16 on center. How to reinforce an attic floor with sister joists.

Loft conversions can i just lay loft boards down on my joists or will i need reinforcement on the joists. Each joist is connected by a vertical 2x4 to the roof rafter above it positioned about 4 from the wall. This means that new floor joists are fitted alongside them slightly raised above the ceiling plasterboard to avoid contact with it. Pull out all insulation and any debris from all of the joist spaces so you can see the full length of each joist including where it meets the exterior walls.