Parging Questions

young_mason

I quoted to parge this wall, should I use mesh? Or is it okay to use just 1 portland 2 bricksand with water and glue?

And should I scratch coat and then finish coat or will one thick coat seal it?

Thank you, Clinton.

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eekie34

If i was you, i would use the traditional wire, scratch, and finish coat. one coat with glue wont. cut it.

Tscarborough

There are a couple of issues. First, I assume from the buttresses that that is a retaining wall, and from the size and shape of the units that it is composed of stone. It also has existing moisture issues as well as mineral staining.

What exactly is the goal of the contract? Do they want to make it more attractive or are they trying to preserve the structural integrity of the wall?

p.s. if you already have the job, it is a little late to be asking how to do it.

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stacker

glue wont help to make the parging stick and stay.i appears the wall has been painted.as a rule any time a masonry wall has been painted or waterproofed(ie tar)it needs to have lath applied and scratched.
if you are only making the wall look better,then a scratch coat and finish coat should suffice.that would give you about 1/2 in of material on the wall.

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young_mason

Thanks for your replies they are very much appreciated.

The wall is made of concrete blocks, the goal of the contract is to make it more attractive and also have the wall last longer , there are some stress cracks and in general the wall looks ugly.

I live in Toronto, Canada. Is there anything else I should know about this job? so far I understand i'm going to put the metal lathe on and 1 scratch coat then 1 finish coat then put my rubber float on it and texturize it. I'd also be using a bonding agent in my parge as well as washing the wall down with it and water. Are there any tips you pro's can share?

wtygart

For what it's worth, I use Spider Lath on all of my applications needing lath. It makes for a thicker wall of mortar, is much stronger then the metal lathe, and won't rust down the road causing cracks. I am not sure if they are in your area or not.

raskolnikov

wtygart,
Spider Lathe??? Fill us in please.

D.

artisanstone

I checked into this as I'd never come across it. Looks good.

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wtygart

i cannot post urls yet but it is spiderlath dotcom

Tscarborough

Glass and cementious products do not play well together,.

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artisanstone

I looked this up, and while regular E-glass fibers are deteriorated by the high alkalinity in cement, modern products use alkaline resistant glass which apparently holds up pretty well.

__________________
Bill Baddorf
Bill@artisanstoneworks.net
www.artisanstoneworks.net
www.stonefoundation.org

Tscarborough

Nice.

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young_mason

So can someone please tell me the exact method I should use, I have many different options and I have parged many different foundations before, but this is a retaining wall and its huge. I may have under priced this one but i'd still like to do the proper job, can someone help. I don't think theres spider lath in toronto, ontario. Thanks.

eekie34

as you will find out, there are many ways to skin a cat and do a good job. Everyone has their way or products they like to use. I hope you have a few more guys to finish that wall if you plan on floating it. It probably will get away from you.

stacker

not unless he does the whole wall at one time.i can see where he can do several separate panels.he can stop at one a day or as many as he feels he can do.

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life is short,do your masonry naked!!
http://ok.local.yahoo.biz/knabemasonry/index.html

young_mason

Awesome guys, I researched a product called duroroc apparently stucco guys use it. But noone has given me a straight answer, I know there are many methods used, but tell one you have found succesful, and that would help me out alot.

thanks.

artisanstone

1. Your stucco job will be purely cosmetic. Any structural fault of the existing wall will not be solved.
2. Price these three options and do the cheapest.
a. Sandblast existing wall.
b. Pressure wash existing wall and prime with bonding agent.
c. Mechanically attach lath to wall.
3. Install scratch, brown, and finish coat to clients spec.
4. Get paid.

__________________
Bill Baddorf
Bill@artisanstoneworks.net
www.artisanstoneworks.net
www.stonefoundation.org

stacker

if it were my job,i would.
apply lath
apply scratch coat.
apply brown coat.
apply finish coat.
apply check to my note at the bank

since the panels are small,there should be no need for expansion joints.
you can more than likely get by with 3/8 or 1/2 of stucco.i would also talk the owner into letting me blow the finish on like sheetrock mud and give it a light trowel.you can blow the whole wall(well from what i see if it)in one day.where troweling on a finish might take 2-3 days.

__________________
life is short,do your masonry naked!!
http://ok.local.yahoo.biz/knabemasonry/index.html

young_mason

Thanks for the tips, but i'm not applying stucco, the owner just wants to parge it... i'm beggining to think that it would be a waste of time to parge it, I don't want to parge it then have it crack on her later on. I'd like to do a proper parge job , I guess that include metal mesh, scratch coat, finish coat, float with rubber float. I priced it for 6850. maybe thats a little low. Errr the learning pains are starting to ache.

Tscarborough

As long as it is not painted, just pressure wash it and parge it with a product like Thoroseal.

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