I recently installed an egress window and window well for a finished basement in a 1950’s home. The basement wall is block with a tar water proofing applied to the outside surface of the wall. Since the inside width dimension of the window well is about 12″ wider than the window opening, the tar covered exterior wall is now visible. Also visible is the edge of the cut block in the window opening. To finish the job, I would like to apply stucco to the exposed block.
Since this is a very small job, I would like to use the most simple stucco process avaible. I would appreciate any recommendations for brand names of easy to apply stucco systems.
Thank you!
Tony Barr
Birmingham, MI
Replies
cement, sand, water
Brownbagg
Should I just trowel the cement, sand & water mixture over the block?
yes
Elastomeric stucco patch compound. Most paint stores sell it. You want the brand that is thick with granules; some are like heavy syrup.
Thanks Sonny,
I'll look for the elastomeric stucco patch compound. What about color? Can the paint store mix the color?
Tony
let me offer some advice, it doesnt work on block. all the morter joints will show. I know first hand experience. float the wall with some cement, sand little water. let dry for about a month andthen put the electr paint stuff on top
OK, I'll do the cement and then the elastomeric stuff.
Thanks,
Tony
look at the front by truck tailgate, just above tailgate you can see the morter joints. this is the electrmatic stucco type paint
Edited 6/20/2004 11:07 pm ET by BROWNBAGG
Simplify your life and buy a bag of pre-mixed parging http://www.bomix.ca/produits.php?lang=en&cat=mortier&prod=crepi_ult_adh or repair compound like Spread'N'Bond http://www.bomix.ca/produits.php?lang=en&cat=resurfacage&prod=spreadnbond. These products are specially formulated 'fat' mortars which will stick where you put them, in very thin layers. Using a regular cement/sand/water mixture for parging will drive anyone but an experienced mason completely round the bend.
Once you've floated one of these products on the block, as Brownbagg suggested, paint it with MF Paint's ISO-TEX, a stucco-texture paint that sticks to concrete substrates like glue and is essentially bulletproof. You can lay it on with a brush, roller, or parging trowel, take your pick. Check http://www.mfpaints.com for a dealer; the product pages on that site are 'under construction'.
If you don,t want to use the paint, Bomix also makes an industrial stucco pre-mix product which is pretty foolproof. http://www.bomix.ca/produits.php?lang=en&cat=stuc&prod=stuc_indDinosaur
'Y-a-tu de la justice dans ce maudit monde?
The only thing I would add to that is to apply a bonding agent to the block wall first. (Before bonding agents, we used to use diluted yellow woodworking glue). A good masonry supply house will have all that stuff.
-- J.S.
Yeah, he could use Gel-Crete or Weld-bond or something like that. But with those two products I mentioned earlier, it's not even necessary. They are almost as sticky as thinset--which, BTW, is another option if he happens to have a partial bag of it lying around taking up space....
Dinosaur
'Y-a-tu de la justice dans ce maudit monde?
I disagree. In fact, I just did the exact same thing last Friday.
1. It cannot be tinted due to it's thick consistency.
2. If you mix in some latex stucco patch cement, it will thicken the elastomeric, help it set up faster, and float over the mortar joints.
In a few cases where the mortar joints were deep or holes existed, I first used stucco patch alone on just the joints (wet first) and followed that with the elastomeric.
Incidentally, the elastomeric will also adhere to damp surfaces, but regardless of brand, make sure you buy a "trowelable" type, as opposed to a "brushable" type. Some are smooth and others have the granules. I buy the granule type. It's called Plastiflex 5200 sold here in S. Florda by Scott Paint Co, but it might be their own product.
If you buy the material that Home Depot sells (smooth) since it's substantially thinner, more latex cement will have to be added.
I have applied my cement/elastomeric "receipe" that filled holes as deep as 1/2 inch with no sagging, and in one application.
The other advantage, IMO, is that since it dries like a rubber, you never have to worry about cracks due to expansion/contraction.
Here's a couple of brand names to look for in your area. I think both are available in smooth or "textured."
http://www.custombuildingproducts.com/onlyproducts/patching/Custom-Patch%20DS.htm
http://www.benjaminmoore.com/wrapper_pg3.asp?L=prod&K=sundryprods&groupid=41&productid=8
Brownbag, I think that you think that I was suggesting elastomeric "paint" as opposed to the patching material. That's why I disagreed with you - I think.
Edited 6/20/2004 11:34 pm ET by Sonny Lykos
Sonny, Brownbag & Dinosaur,
Yesterday I had no idea where to start, now I have a very informed direction.
Thanks to all!
Tony
I'd be concerned about the products that have been recommended adhereing to the tar waterproofing. I don't know if it's a problem (and don't have a solution if it is) but thought I'd mention it in case the responders missed the mention of the waterproofing.
Smile. It could be worse. You could be me working for you.
Thanks Mikey for picking up on that. Perhaps I could nail a wire mesh (lathe?) to the block first and apply the stucco to that.
Tony
that is not neccasary, stucco loves concrete block, they are the same make up of material. No bonding agent is needed. no wire lathe, no waterproofing just cement sand, water on block.
The problem I missed is, his block wall already has a coat of tar on it. In that case, I'd read the fine print on the bonding agents to see if there are any that'll work.
-- J.S.
if there tar, it will act like a slip agent, nothing will stick to it. I guess do it the syntectic way. layer foam board with fake stucco on top.
Actually, if the tar coating has cured hard, the elastomeric will bond.
If it hasn't. All he has to do is take a cold chisle and nick it to the bone every couple of inches - often enough for a mechanical bond.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!