Reason for going to a 50 grit diamond , if the floor has never been in a natural polish the terrazzo installer usually leave the terrazzo floor at a 80 grit stone, an 80 grit stone is not equal to a 80 grit diamond. The terrazzo installer depends upon the coating to bring out the color
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
and the gloss and shine. Therefore to achieve the clarity in to terrazzo you need to drop down to a 50 resin. However if the customer is only interested in shine and gloss then you can start with a higher grit diamond. You will achieve gloss and shine but you won’t have the deep clarity.
In all cases it the customer expectation you need to meet, this is what drive the process you would perform.
From: rivera.gm@gmail.com [mailto:rivera.gm@gmail.com] On Behalf Of Alex Rivera
Sent: Tuesday, September 29, 2009 6:21 AM
To: Restoration and Maintenance
Subject: RE: [sccpartners] Terrazzo Question
Thank Baird,
This building was built in 1999. I am assuming the floor is about the same age. (10 years old) Are the different types of floors determined by age?
As a sales rep I am learning that I need to know a lot more of these things. I can identify most granites and marbles, travertine and slate, etc. There are some I get a little stuck on like terrazzo because we just don't see much of it. In the past 2 1/2 years, I have worked with 1 terrazzo project. This is how little I have seen it.
On Tue, Sep 29, 2009 at 12:07 AM, Baird Standish <bairdstandish@gmail.com> wrote:
Just my 2 cents, but I would definitely compare the results going down to 50 grit to starting with, say 220. We just polished a 900 sf yellow cementious terrazzo floor (circa 1940 I would guess) and it came out very smooth and glossy with 220, 440 and Mb-12. I don't doubt extra low grits, maybe 800 grit and chrystallizer would be a little more refined, but then we were polishing a pet store, not a church and were able to charge appropriately.
We have also polished many terrazzo floors with twister type pads and they have come out very well. The look is different - more texture - but also very rich and the gloss holds up well after a year +. Not sure that the twister pad method is significantly less time consuming but more "idiot proof" so to speak. Haven't really run into epoxy terrazzo.
B.
_________________
From Baird Standish
Managing Partner
Facility Specialists,LLC
1616 Walnut Street
Philadelphia, PA 19103
Ph: 215-732-7505
Fx: 215-740-6436
On Sep 28, 2009, at 9:19 PM, Georgia Rivera <georgia@stonebuff.com> wrote:I have to find out with Alex what kind of terrazzo I am dealing with. I don't know what to look for to tell what type it is.
On Mon, Sep 28, 2009 at 8:26 PM, John Freitag <jfreitag@thestoneandtileschool.com> wrote:
Georgia,
I tested the crystallizer about 10 days ago and gave Chad the ok it worked very good.
Regarding the pricing question are you asking for a price on the terrazzo ? if so how many hone are you going to do? are you going to use a densiflier ? are you going to crystallize?
Remember in training we build the bid based upon the cost of materials and labor and then applied the profit margin. If you need help call me and we will work through the cost tomorrow
Be sure to be ready to answer the above questions, so we can build the costs and add the profit margins to the job.
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
<image002.jpg>
From: rivera.gm@gmail.com [mailto:rivera.gm@gmail.com] On Behalf Of Georgia Rivera
Sent: Monday, September 28, 2009 6:49 PM
To: Restoration and Maintenance
Subject: RE: [sccpartners] Terrazzo Question
Thank you all! You guys are so great! Do you know if that crystallizer is ready for purchase from Stonecare Central, yet? Also, what would you suggest a normal per sq ft charge should be?
On Mon, Sep 28, 2009 at 11:40 AM, John Freitag <jfreitag@thestoneandtileschool.com> wrote:
Georgia,
I’ll give you my 2 cents worth on terrazzo. Over the past I’ve worked on both cement based and epoxy based terrazzo. As mentioned by one of the other partner treat it like marble. However there are several thing to consider when doing terrazzo.
1. If the terrazzo has been coated? waxed you first need to strip it. Then start with at least a 50 grit resin diamond, then progress through the grits until you have reached the desired hone, if it a dark colored terrazzo , then hone up to 800 , if it’s a light color terrazzo hone to a 400
2. I recommend on cement based terrazzo to use a densiflier, the process I use is to hone the terrazzo up to a 220 grit then apply the densiflier keeping it wet for at least 45 minutes, then vac up the excess. By leaving the densiflier on the terrazzo for 45 minutes you are allowing the densiflier to penetrate into the cement.
3. After you have vac up the excess densiflier then take a finish mop for applying waxws and lightly mop on a thin coat of the densfilier, let this dry over night and then come back and do the 400 , 800 hone until you reach the gloss you are looking for. by mopping on a coat of the densiflier and leaving it overnight this give the cement a harder finish and will polish easier and deliver a high gloss finish.
4. There is no need to use polishing powders if you are using a densifiler.
5. If you want more color on the terrazzo you could use a very light application of crystallization. This would add gloss and some additional color to the terrazzo. And don’t fear the Terrazzo Institute recognizes crystallization as an acceptable method of polishing terrazzo.
EPOXY TERRAZZO
1. If the terrazzo is epoxy you will need to strip off any coating that have been applied.
2. You normally need to start honing at a 50 resin and hone up to the grit to where you can polish the terrazzo. Usually on dark colors you need to go up to at least 800, lighter colors you can polish after 400
3. Polishing you can use a 5X Powder
4. If you desire a higher shine and additional color you can do a light application of crystallizer.
5. Diamond to use I always used my regular marble diamonds on both cement and epoxy terrazzo, I per the 3 inch triple thick from StoneCare Central.
Georgia, as you learned in your recent training use the same timing methods as you do for marble and you will be fine. Plus this will allow you to project out the time needed to complete the project. If you have any questions , please call
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
<image001.jpg>
From: fhueston@gmail.com [mailto:fhueston@gmail.com] On Behalf Of Dr Fred
Sent: Sunday, September 27, 2009 7:40 AM
To: Restoration and Maintenance
Subject: RE: [sccpartners] Terrazzo Question
Jason is correct you need to determine if it is epoxy or Portland based terrazzo. If you see cracking in the terrazzo chances are it is Portland based. Denisfiers can not be used on epoxy..For Portland terrazzo use standard marble pads. for epoxy use one designed for Engineered stone such as the Ceramica EX by Alpha
On Sat, Sep 26, 2009 at 10:21 PM, Randy Frye <rfrye@comcast.net> wrote:
Hi Georgia:
We do a lot of the old terrazzo in Florida. We treat it just like marble floors. I will usually polish with a marble polishing compound after a 400 resin. I start with whatever the stone dictates as far as scratching is concerned or glues on surface from carpet, ect. This picture was one we did last week in Marco Island Florida.
Hope this helps
Randy, Cleaning Edge
Naples, FL
From: Jason Francis [mailto:jfrancis@protocolfloorcare.com]
Sent: Saturday, September 26, 2009 9:30 PM
To: Restoration and Maintenance
Subject: RE: [sccpartners] Terrazzo Question
Hi Georgia,
Its good to know if the binder is concrete or epoxy. Use harder resins for terrazzo. I usually start at 220 metal or 50 resin if it's in decent shape. If it's concrete, you can densify after 400, and work your way up, or you can use a powder polish and get a nice shine as well at 800 or above. Sometimes it's good to use a concrete densifyer/coating as a topical.
Jason
Protocol
Sent from my iPhone
On Sep 26, 2009, at 8:25 PM, Georgia Rivera <georgia@stonebuff.com> wrote:Hi Partners,
I haven't done much terrazzo estimates as I don't see very much of it where I am. I have a steakhouse that has a matt finish terrazzo (most of it is dark with light accent pieces on the borders). Approx. 2500 sq ft. I took my razor and didn't find a topical. The owner wants the light scratches removed and wants the finish to have a high gloss. Nice place with a black baby grand piano in a fun area just a few blocks from downtown. From what I know, there are special pads for terrazzo, is that right. The building was built in 1999. I do not know the age of the floor.
I was thinking of a deep clean, diamond hone process then crystallizer. Does anybody else have anything they can add to help me with estimating the project?
Thanks all!
Georgia
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Frederick M. Hueston PhD
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