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Old 04-12-2011, 04:44 PM   #301
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my kitchen reno - complete remodel (with concrete countertop)


I tried using the quickrete 1106-80 today. I purchased 8 bags from someone who had left overs. I noticed that it was lumpy and when we tried to mix it it set hard in the mixer within 10 minutes while turning and getting the water right. any suggestions?

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Originally Posted by weberus3 View Post
For starters I enjoyed your project with the countertops. I posted photos of my project with this thread. I want to do concrete countertops but was nervous. So I did a small project first to try out my skills. I made cap stones for a wall I built around my pool. I went to Lowes' and ordered Quickrete countertop mix. (great product) it was $12.50 for 80 lb bag TN price. I mixed it just as the instructions said 4 qts of water to a bag. The mix is perfect no stones. No shinkage and busted out of the forms the next day to cure. I wanted to do the "stained glass inlay" method upside down. My cap stones is 12" wide 8' long 2" thick. It was messy to pour, screet off and viberate. But you learn as you go. **tape over the screw heads of the forms for easy removal. I'm ready to get back and polish to see the final product. I'll post some photos of my final outcome later.

ONE QUESTION, did you join any countertop edges between the sink run and the corner angle run? How did you finish this out to make it look seamless between the ends? Thanks

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Old 04-13-2011, 08:52 PM   #302
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hi dhaggett,

sorry to hear your predicament. i am not an expert in concrete countertops so i have no idea how to fix your problem. all i can say is if you are not an expert then simply follow the instructions provided by those that are. i have not heard of the type of concrete you have used and so i have no idea if it is suitable for the task or not.

so my advice is to stick to the instructions and follow the pros as close as you reasonably can. you can get the books and videos from the library (as i did), local book store and of course online.

good luck.
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Old 04-14-2011, 06:03 AM   #303
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my kitchen reno - complete remodel (with concrete countertop)


We had concrete countertops and a concrete 'bar' installed when we built our house in 2003. It was also a 'let's see if we can do this' type thing between my husband, and his buddy who owns a concrete company. They are dyed black, but I don't think they were really finished off properly, because in some places, we've gotten some discoloration.....which doesn't look terrible, almost like color veins in granite or marble...but just a couple of places. I do have a question, I saw on one of the links provided, that the maintenance for them is a monthly wax. I'm ashamed to say, I've never done this, or knew that I needed to. :-/ Do you guys do this to yours? What do you use? All of our countertops, and bathroom vanities, plus all of our floors....are stained concrete. In fact, we are looking to 'strip' a wax coating off our floors, in order to refinish them.....right now, they never look shiny, just buffed/almost 'dusty', which drives me crazy. But, my husband is having trouble finding a product that strips the wax well. Any ideas? Do any of you have stained concrete floors, and are they just waxed occasionally, or did you poly-urethane them/do something else? All your coutertops look lovely, job well done. Also, we have high ceilings and space between the top of our cabinets and the ceiling, which I like to decorate seasonally, so I am ALWAYS standing on the countertops, sometimes even the reinforced section of the bar (dusting the light fixture)....I never have even considered it wouldn't hold my weight. ;-)
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Old 04-24-2011, 09:42 AM   #304
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i don't wax monthly, or at all actually. but you're right, if you don't maintain it there will be a "patina" that forms on the countertop over time no matter how careful you are. as for products, i just follow what the pros use (buddy roe or cheng).
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Old 04-25-2011, 05:53 AM   #305
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i never wax mine. I used an EAP sealer from Kinloch USA. It is awesome stuff and works great. I never saw a need to wax.
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Old 11-09-2011, 05:26 AM   #306
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Have just read this entire thread, as i am thinking of using concrete on my new kitchen counters. My only concern is the weight of them, as they would have to be 2-3 metres long. I wondered if it was possible to use MDF like they do when they cast Corian or those synthetic stone countertops - with the thick MDF in the middle of the form and the concrete sort of wrapped round it? It would be lighter?
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Old 11-13-2011, 09:27 PM   #307
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don't re-invent the wheel.. trust the pros with their tried and true methods. do NOT leave the form on the counter.. the MDF has to come apart and removed.. then the concrete lifted and placed on the countertop.

you can calculate how heavy it will be at the end because you have the volume determined accurately and concrete weight per volume is easy to find via google.

so when it comes to weight, you only have 2 problems:
1) can you (and many buddies) lift it into place?
2) is your cabinet frame strong enough to support the weight?

i talked about both these issues in my thread. i was completely under prepared for how heavy (and awkward) it is to lift 300lbs of concrete.. but got the job done in the end.

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Old 11-14-2011, 11:08 AM   #308
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my biggest slab was 1.5"x3'x7' it weight 328lbs. I figured it would take 4 people to carry it from my basement to the 1st floor. I had all types of straps ready to go but quickly realized they were not really needed. Believe it or not only 2 of us carried it most of the way.
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Old 11-15-2011, 07:39 AM   #309
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Honestly I thought i could build the form then pour in the concrete to half-way up, and press thick MDF down into the middle so the concrete sort of squidged up round it. The MDF would replace some of the concrete and therefore the whole thing would be lighter. The concrete would still be maybe at least 1inch thick all over the top and sides of the MDF, and the core of MDF wouldnt be seen once the worktop was turned up the right way up....? It's how my Corian worktops were manufactured, a thick base of MDF then the corian is applied over the top and sides. The Corian itself is only about 1cm thick.
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Old 11-16-2011, 08:51 PM   #310
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toomanyscrews, i dunno never heard of anyone doing it that way. but you could be the first! post your results and explain how it went, maybe you're on to something?

good luck!
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Old 11-17-2011, 05:59 AM   #311
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i have seen something where they use styrofoam instead of mdf. I have a book where buddy rhoades uses this. I am not sure how rigid the piece would be when you are done though. I guess i can look in the book and let you know exactly how he did it.
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Old 07-07-2014, 05:07 PM   #312
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i was at an Oyster bar the other day and they had a concrete countertop. the surface was epoxy flooded, looked really sharp! i do not know if the epoxy was (or can be) food safe...

only somewhat related.. but i made a pea gravel walkway leading up to our house and didn't want the gravel to spill on to the sidewalk. so i made a house plaque out of concrete using the method outlined above. looks pretty cool, plus holds all the pea gravel. skillz & tools re-used, was very proud of myself

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