Loft Conversion Floor Joists Size

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

Loft conversion floor joists size.

This is part 2 in my series of loft conversion videos. When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started. Spacer noggins solid struts are installed between joists to reduce joist deflection vibration improve floor rigidity and performance. But larger is not always better when builders are constructing a home or adding a room addition.

The extra two inches of vertical distance when a floor is framed with 2 x 10 joists rather than 2 x 12s can be quite important for example. I do not plan on ever using it as a habitable space so do not want to spend unnecessary funds on it. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. Joist span and spacing is set by your local building code.

New floor joists are measured and trimmed to size then dropped into the joist hangers and secured in position. Joist size for loft storage i would like to use the loft space for storage and lay loft flooring however i am unsure if the existing joists would support the weight. 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. These tables can help calculate whether floor joists are strong enough to support themselves and the load they carry without the help of any walls underneath.

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