Building Homes or Extensions/concrete patio question

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Expert: - 7/11/2008


Question
Hi Dan, I have a question regarding a concrete patio I want to build. I have some knowledge of concrete work but I have no idea how they make the concrete smooth like glass. I want to do my patio and make it as smooth as possible and any help or suggestions is appreciated. Thank you.

Answer
Think carefully before you slick trowel the patio.  Exterior concrete normally has a broom finish or some other slight texture.  They can get treacherous when wet.

To answer your question:

Place the concrete
Strike to grade
Bullfloat to flat
Edge, perimeter dress, and joint if planned.
WAIT FOR THE BLEED WATER TO EXIT.
Float the slab to improve flatness and densify the top.  Rejoint and edge.
Make one or more passes with a hard trowel.

The more passes and more pressure with the steel trowel, the shinier, denser,and glassier the finish.  Again, I would plan a light broom finish after floating the slab.  If you have a chance to watch anyone pour and finish a patio or sidewalk, do it.  MOst fellas will even give you advice.

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Dan Griffin

Expertise

I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

Experience

I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

Organizations
My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

Education/Credentials
I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

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