Loft Conversion Floor Strengthening

In this video i show how i cut my my joists make packer plates get the joists from the garden up int.

Loft conversion floor strengthening.

Even if the loft was previously used for light storage you will almost certainly have to strengthen the ceiling joists in the loft floor. The plan is just to put down some 18mm chipboard insulate the roof and board off the roof and eaves. In the case of 2x6 joists you can pair them up with additional 2x6 joists by nailing them together side by side. Sistering is the process of adding a new joist next to each existing joist.

It also provides protection against stress on the ceilings beneath. The new floor joists of your loft conversion will need to offer at least 30 minutes worth of fire protection which could mean replastering the ceilings in those first floor rooms below. This method ensures the thermal insulation level is maintained and your u value is not compromised. You can do this by adding larger and stronger timber floor joists between the existing ceiling joists.

This is part 2 in my series of loft conversion videos. The loft room will also have to be separated by a fire door either at the top or bottom of the new stairs. Joist cross bracing is used to elevate the floor above the existing insulation by 100mm.