Has anyone had experience in Sandblasting and Acid Staining Concrete ????? I have a request for a Quote for a very large logo......to be applied in this manner...18 foot x 41 foot Oval with Detail...... I could use any suggestions you may have,,,,,,,
( I am familiar with all the Safety Requirements and the OSHA Requirements.....and Safety Gear to wear) I need help in pricing as well. The quote has to be in Tuesday, Jan 28.....
Thanks Shep'
Posted by Bill Dirkes (Member # 1000) on :
Shep, Is it possible to make a positive mold and position it in the form before the concrete is poured. The aggregate in poured concrete is gonna wreak havoc in blasting any detail at all. Make the mold from HDU coat it with silicone release agent before pouring? I've never tried it but sounds like it should work. Pour wet and vibrate the beejeebies out of it. Goodluck!
Posted by Robert Beverly (Member # 1907) on :
Shep
We do a lot of what you speak of...the best way to help you is to have you fax over the art and size of wall with the colors they want to acheive with the stain...some things just don't mix...and as Bill said, precast will help a bit in cost if the blasting is multi stage or has "sculpted" elements.
Fax 1-800-410-2026
Posted by Monte Jumper (Member # 1106) on :
Yes it wll work but don't expect much detail...every piece of aggregate is a different hardness so great depth is hard to achieve and you will never achieve an even depth.
Spauling at the edge is a problem also because of the heat build up from blasting so keep movng then come back to areas that you may have had trouble with work them sslowly by moving around to diffrent areas.
Personally I'd make sure you have an out in your contract...let them know the difficulty of such a task and don't promise any thing near blasting stone.
Personally after doing one or two of these I would stand clear and let a monument company have the bid...It is far better to cast in the graphics at the time of pouring.
[ January 26, 2003, 01:22 PM: Message edited by: Monte Jumper ]
Posted by Mike Pipes (Member # 1573) on :
Shep,
I saw a local concrete company doing this very thing only on a smaller scale.. I'd assume if a company here can do it (specialized services like that are tough to find here) you can probably find a place there that can give you ideas, or even do the job for you.
Posted by Rick Chavez (Member # 2146) on :
I think there is some information missing here. Is this on a pre-existing wall or are you gonna pour it? How detailed is the logo? How deep do they want it? Is this qoute asking for alternatives or is it a straight up RFP?
Trying to sandblast a releif of a logo on a pre-existing wall is asking for trouble, it is possible but it may not look good, especially if the wall was poured incorrectly, or in stages. Is it a weight bearing wall? If it is, you may not be able to blast it, or if you can, you may not be able to blast on it to deep. Acid staining multiple colors on a vertical wall is tricky, and very hard to control how the color will look or the consistancy, especially if you do not have any experience in it. Usually when I spec. out sandblasting it is for texture only, maybe a simple pattern, expecting a sandblaster to be graphically conscience is not recommended, unless they have experience in it. Either way, if you have to ask about this kinda work, it might be a little more than you want to bite off, I would start on a smaller job where blasting does not have to be so critical.
Rick
Posted by Arvil Shep' Shepherd (Member # 2030) on :
Rick, First the surface is a Sidewalk!!!!!!!and a Parking lot...
Second I have had considerable experience in Sandblasting,practically all types of surfaces.....
Third ....The sand will only break the Matrix Surface....about 1/8" deep....
Fourth ......The design is a simple Oval Within a Oval with some straight lines... with very little Staining....about 2% of the overall job...
Fifth......My question basicly.... what is the going price per square foot for Sandblasting this type of Project in various areas of the country. Sixth.There is about 1000 sq ft in the total project.......The General Contractor will provide "Containment Areas" at his expense...and do final clean up.
I hope this is enough info .to get some basic prices.......BTW I need the info today if possible..Thanks for everyones help Shep'
Posted by Rick Chavez (Member # 2146) on :
Ahhhh I see now!!! Information is good. Well with applying a resist on the concrete and then the sandblasting, I would imagine that a contractor might get 4-6 bucks a square foot for that, then with the staining, another 6-10 bucks for the areas that are gonna get stained. So I think, in California, a licensed contractor, on the mid to high end level, 6-8000 might be about right.
Rick
Posted by Robert Beverly (Member # 1907) on :
Shep
My concrete guru suggests not blasting into existing (already poured) concrete as the stain will not be near as permanent showing up in the exposed aggregate after the matrix has been removed.
Having said that, he suggests just scoring it before applying the stain.
but pricing for blasting and staining is 14.00 - 16.00 per square foot.
Hope that answers your question
OH..Larry also says to be damn careful...when washing off the residue after staining...it does stain everything in sight if not careful.
Posted by mike norcross (Member # 3496) on :
Howdy shep Well when i did that last, i used the sand they use to do detail on rocks, i can't remember what it is called, it is much sharper than the regular sand. Also i just charge by the square foot or by the square yard to do a job that size. Sign writers pricing guide, is what i use. the sand is an alloy of some kind. Might even be grafite too
Posted by Arvil Shep' Shepherd (Member # 2030) on :
Hey guys, Thanks for the info and quick response......I was not to far off with my quote....I went in at $15 a sq ft ......this includes Staining.....but only about 10 sq ft total will have to be stained."Some small circles"
Robert, Thanks, The Stain sure can give you some grief.if you let it....
Mike. I think what you are refering to is Aluminum Oxide.........It cuts Great and has very little dust...A little more expensive than sand ....but you can recover and use several times.....
Rick, The competition here is not as great as it may be in Calif....so we can charge a little more....
If I get the job I will post photos here when finished.. Shep'
