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If you are building a house or a commercial space this
sheet should be clearly posted and handed out to all your subcontractors.
A few simple and obvious precautions will yield a beautiful floor.
slab requirements for interior and exterior concrete:
- 4-5 sack mix with a max of 15% fly ash. Absolutely no curing compounds, this will cause your job to be priced as a remodel
- Machine trowel interior spaces if possible, not too hard, leave
- You want the marbling affect from the machine trowel however a
burned slab will not take stain well so do not over burnish it!
- On exterior concrete safety is important, you can make the surface
slip resistant by giving the concrete a light broom finish or a rock
salt one for more style. (sand
can be added to sealer if concrete is slick troweled and slippery)
- Give the concrete a day to cure before subjecting it to foot traffic
General cautionary statements:
- Concrete should be protected from pesticides, they can discolor
the concrete and alter stain penetration
- Do not cover concrete for 30 days, any board or object left on
a green slab will leave a permanent water mark or stain (all masking
tapes should be removed promptly after use, the stick-um can prevent
- Do not leave wall plates for doors or cased openings for more than
a day, this can leave water mark or stains
- Do not nail support studs into slab, resulting divots can be patched but will not stain the same
- Do not spill plumbers glue, primer, solder, threading oil, or flux
(provide some cardboard or masonite for your plumber and see that
he uses it). Threatening charge backs is useful in getting their
compliance. Be sure to talk to the plumbers helpers as well, the
boss rarely is doing the actual work.
- Do not use paint, grease pencils, markers, crayons, or red chalk
to mark on slab
- Do not leave metal or nails on slab (will leave rust stains)
- Do not let contractors eat or drink on slab, greasy foods can really
- I recommend a trash can in the garage and a job site broom and
dustpan to remain on the job. (set a tone of cleanliness and have
the slab swept daily)
- For most new construction jobs we like to get started when the
space is dried in i.e. chimney capped, plumbing and A/C roof penetrations
flashed and roof shingled. Our work begins before insulation if you want
scored borders otherwise
scoring is done before framing. Staining and sealing are done after
and texture and before trim and paint. We then cover the floor
at least one whole day of drying. As part of our service we will wax floor after your cleaning crew has finished their final clean right before move in and apply a final wax finish.
- For new construction exterior jobs work is best done at the very
end of build out. Things like stone work and stucco are hard on the
sealer and the concrete can not be covered because of rain. The exterior
concrete needs to be protected from painters or the job will be treated
and charged as a remodel.
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