Replacing Floor Joists With Concrete Slab

Replace a timber floor with a concrete slab just put the joists back on the jarrah sill looks pretty dry and solid.

Replacing floor joists with concrete slab. Remove floor joists aluminum tape bottom sides of stud wall s sill fill the voids with mortar in block s big long lag bolts go back to 3 step your dry block areas crawlspace gravel fill up slab. Install it flat on the slab surface with the outside edge aligned against the side wall or the edge of the floor line. Secure each length to the slab with concrete nails spaced approximately 80 cm 32 inches apart and 20 to 30 cm 8 to 12 inches from each end. Then use pry bars and your reciprocating saw to pry and cut the floor joist away from the subfloor.

This will create a weak spot. These will be the end sill plates that support the ends of the floor joists. Install it flat on the slab surface with the outside edge aligned against the side wall or the edge of the floor line. Iggy apr 2 16 at 8 31.

Secure each length to the slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end. A few points ground floor slabs are only suitable for load bearing ground not suitable for shrinkable clay soils and or nearby trees lay hardcore blinding dpm concrete insulation pipes screed ditra mat tiles. If your ground floor timber floors have become infested with insect damage or dry rot you might choose to replace them with concrete floors. Begin with dry wedge in shim on block s between every other joist.

Start by cutting out a small 1 2 in 2 5 5 1 cm section of the floor joist with a reciprocating saw. However laying a concrete floor to replace your timber floors may not be the end of your troubles if you don t take care to treat the problem before you lay a concrete slab for your new floor. A few dynabolts would be ok but it is not going anywhere. Do it piecemeal room by room.