Replacing Floor Joists With Concrete Slab

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.

Replacing floor joists with concrete slab.

Do it piecemeal room by room. This will create a weak spot. 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. If your ground floor timber floors have become infested with insect damage or dry rot you might choose to replace them with concrete floors.

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. 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. Start by cutting out a small 1 2 in 2 5 5 1 cm section of the floor joist with a reciprocating saw. Pry the floor joist from the subfloor with the back of your hammer.

These will be the end sill plates that support the ends of the floor joists. Im sure removing a suspended floor and replacing with a slab would work fine. 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.

A few dynabolts would be ok but it is not going anywhere. 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 32 inches apart and 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.