PROPER =
PREPARATION OF CONCRETE FLOORS

=20
New or Older =
but Unsealed Concrete Floors:

 	Allow the concrete to cure thoroughly prior to coating. "Cured" =
is defined as concrete

poured and aged at a normal room temperature (70-80 degrees) =
for at least 30 days.

(We do have a latex based product that can be applied to curing =
concrete to

allow immediate coating!!!).

Concrete must be free from moisture as much as possible. =

(concrete will generally contain 15-18% moisture). =

Vapor pressures, temperature and humidity differentials and =
hydrostatic pressure can

 cause a premature coating failure if not detected and =
corrected.

 To be sure the concrete is dry enough, conduct a sample test =
by placing

a rubber mat on the floor and check 24-48 hours later for =
moisture

condensation on the back of the mat or a darkening of the =
concrete

 due to moisture. You can use various methods =3D like taping =
down some plastic.

If condensation is found,  the concrete is too damp to coat and the =
source of moisture

must be located and corrected.

If only additional drying is necessary, allow two weeks =
before re-testing.



 Nonporous, Smooth Troweled or =
Chemically Treated Concrete

May Require etching. The need for this can be determined by =
pouring a small amount

of water onto the concrete floor. If the surface soaks up the =
water somewhat like a blotter, it

is porous enough for coating. If water does not absorb into the =
concrete, etching is a must.

Again, we have several products that are environmental friendly =
to accomplish a proper surface.

Acid Etching Requires the =
Following:=20

1. Cleanup, =
Powerwash, Scrape, Sweep or blow down surface to remove loose dirt.

2. Wet surface thoroughly with clean water.

3. Apply with a 10% solution of Muriatic Acid at a rate of 1 gallon

of acid solution per 75 square feet..Let sit.

4. Scrub thoroughly with stiff brush.

5. Allow sufficient time for scrubbing until bubbling stops.

6. If no bubbling occurs, surface is contaminated with grease, oil

or concrete treatment. Remove contaminant with product such as TSP, then =
proceed

with etching.

7. Flush surface 2 or 3 times with water ( baking soda added to counter =
acid) to totally

remove acid solution. A powerwash here is good!!!

8. Finished Surface should have a texture similar to medium grit =
sandpaper.

9. Allow surface to dry and remove dust before painting re-test for =
moisture.

A Diamond Grinding is much better surface prep.

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ors__.htm     2008-JAN-20 13:50:14     7k=0A=
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                    2007-OCT-09 09:56:04   191k=0A=
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=0A= ------=_NextPart_000_0029_01C87DCC.7D7A5A30 Content-Type: application/octet-stream Content-Transfer-Encoding: base64 Content-Location: http://budgetbob.50megs.com/cgi-bin/sitestats.gif?p=http%3A%2F%2Fbudgetbob.50megs.com%2FAA2007RECON%2Fpreparation_of_concrete_floors__.htm;r=http%3A%2F%2Fwww.budgetbob.50megs.com%2Fcgi-bin%2Futil%2Ffm%2FAA2007RECON;t=3810; R0lGODlhAQABAIABAAAAAP///yH5BAEAAAEALAAAAAABAAEAAAICTAEAOw== ------=_NextPart_000_0029_01C87DCC.7D7A5A30 Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Location: =?iso-8859-1?Q?mhtml:file://C:\Documents_and_Settings\New_Tammy\My_Docume?= =?iso-8859-1?Q?nts\budgetbob50megs\PREPARATION_OF_CONCRETE_FLOORS=A0_The_?= =?iso-8859-1?Q?preparation_of_concrete_surfaces_is_just_as_important_as_t?= =?iso-8859-1?Q?he_surface_preparation_of_steel.mht?= PREPARATION OF CONCRETE FLOORS� The preparation of concrete surfaces is just as important as the surface preparation of steel

PROPER PREPARATION OF CONCRETE FLOORS

 
New or Older but Unsealed Concrete Floors:

 	Allow the concrete to cure thoroughly prior to coating. "Cured" is defined as concrete

poured and aged at a normal room temperature (70-80 degrees) for at least 30 days.

(We do have a latex based product that can be applied to curing concrete to

allow immediate coating!!!).

Concrete must be free from moisture as much as possible.

(concrete will generally contain 15-18% moisture).

Vapor pressures, temperature and humidity differentials and hydrostatic pressure can

 cause a premature coating failure if not detected and corrected.

 To be sure the concrete is dry enough, conduct a sample test by placing

a rubber mat on the floor and check 24-48 hours later for moisture

condensation on the back of the mat or a darkening of the concrete

 due to moisture. You can use various methods = like taping down some plastic.

If condensation is found,  the concrete is too damp to coat and the source of moisture

must be located and corrected.

If only additional drying is necessary, allow two weeks before re-testing.



 Nonporous, Smooth Troweled or Chemically Treated Concrete

May Require etching. The need for this can be determined by pouring a small amount

of water onto the concrete floor. If the surface soaks up the water somewhat like a blotter, it

is porous enough for coating. If water does not absorb into the concrete, etching is a must.

Again, we have several products that are environmental friendly to accomplish a proper surface.

Acid Etching Requires the Following: 

1. Cleanup, Powerwash, Scrape, Sweep or blow down surface to remove loose dirt.

2. Wet surface thoroughly with clean water.

3. Apply with a 10% solution of Muriatic Acid at a rate of 1 gallon

of acid solution per 75 square feet..Let sit.

4. Scrub thoroughly with stiff brush.

5. Allow sufficient time for scrubbing until bubbling stops.

6. If no bubbling occurs, surface is contaminated with grease, oil

or concrete treatment. Remove contaminant with product such as TSP, then proceed

with etching.

7. Flush surface 2 or 3 times with water ( baking soda added to counter acid) to totally

remove acid solution. A powerwash here is good!!!

8. Finished Surface should have a texture similar to medium grit sandpaper.

9. Allow surface to dry and remove dust before painting re-test for moisture.

A Diamond Grinding is much better surface prep.

------=_NextPart_000_0029_01C87DCC.7D7A5A30--