Floor Measurement Top Of Slab To Top Of Slabs

Wall measured through slab.

Floor measurement top of slab to top of slabs.

Did the builder forget to install poly under the slab. Astm f2170 rh testing inside the concrete slab the in situ rh test provides a numeric measurement of the moisture within a concrete slab using an rh sensor placed at a specific depth. Even if the builder forgot to install poly under the slab there. Soffit of transfer structure slab or beam above.

For example a floor with an f f measurement of 60 is twice as flat as a floor with an f f of 30. Several types of vinyl flooring may work better for different concrete floors. Exclude formwork intersected by slabs. F f numbers can be taken for slabs on grade as well as elevated slabs.

Top of slab above i e. No surface test tells an installer how much moisture is present deeper within the concrete which is critically important as that moisture gradient will equalize if a non permeable floor covering is installed. Floor flatness tends to be very important for spaces where equipment must be set perfectly. Because concrete likes water the drops should absorb into the slab.

A vinyl sheet may be forgiving if your concrete slab isn t perfectly even. That s why builders rarely install 6 mil poly on top of a slab. These factors can introduce a lot of moisture variability across the floor slab. As with f l the measurements are linear and higher numbers represent a flatter floor.

Slab measured across wall. Who installed your radiant floor slab. Additionally because this method only takes measurements at or near the slab s surface it has many of the same drawbacks as the cacl 2 test. Most residential slabs have a layer of 6 mil poly or a similar thicker vapor barrier membrane directly under the slab.

Do not exclude formwork intersected by beam ends. This vinyl type comes in a single sheet that is installed over the concrete floor. A range of sizes and configurations are possible with wide slabs so our designers ensure that each project is individually designed for application and loadings. Felts understands that one dry spot in the slab doesn t mean it is ready for the finished floor.

We aim to reduce the weight of the slabs to bring down costs reduce transport loads and craneage where possible. This includes backing top design and protective layers. On commercial jobs raw slabs are frequently treated with sealers which may cause adhesion problems. If they bead up on top of the slab it is probably contaminated.

To test for an incompatible product on the slab an easy method is to put a few drops of water on the slab. Open top of wall.