I didnt want to go on and on in BandS's good news post but I do think that this is a topic worth airing.
First we were told not to put color in the stucco because it weakens it....it is a very fine power.
We were also told to seal the stucco with a good sealer.
Then we put 2 coats of Osel paint that contains sealer.
The finished products looks like a vinyl coating.....and so far so good with any water coming through.
Any other thoughts on this. I know that many people are building and the outside of whatever you are building becomes very important during a
hurricane.Gnome-ad - 9-13-2007 at 11:01 AM
We used Comex products on our casita. 2 coats of sealer and three coats of paint (for color coverage - we did not water it down as much as recommended
on the can), and two or three coats of a white sealer on our colado (sp?) roof. No problema with any leaks through those areas, but our casita is only
a year and a half old. Our water came in under a big door instead - a design flaw, but not any real problem. Now we have added a pretil (sp?) on the
top of the building with gargolas to take water away from the sides. That addition still needs to be sealed and painted ... ho hum, maybe manana. Bob and Susan - 9-13-2007 at 11:36 AM
ok what's a "gargola"????bajajudy - 9-13-2007 at 11:39 AM
Water spoutsDiver - 9-13-2007 at 11:40 AM
In theory a lot of admix (color pigment) could weaken the stucco (concrete) mix. In reality, if you reduce the sand accordingly and maintain the same
amount of cement in the mix, the strength should be fine; besides, this is not a structural coating. It would only be a potential problem if large
amounts of pigment were used to replace cement in the mix.
Using a color pigment admix does, however, make the cured stucco less permeable as it adds a finer grain to the mix to fill between the sand grains
with the cement. In this case, when you seal, make certain to thin the mix a bit more than they say and apply in cool morning temps to allow more
penetration. A second quick coat of sealer and you will be good for a 3-5 years at which time you can re-apply the clear sealer.
Add 2 coats of a good acrylic paint over the initial 2 thinned coats of sealer and the job should last for 10 years or more without much maintenance.
Getting a good bond in the first place is sooo important; no dust, dirt or grease; acid wash first if you have to.
.Bob and Susan - 9-13-2007 at 11:40 AM
so how does a water spout take the water away from the sides????tuna stick - 9-13-2007 at 12:03 PM
The gargolas extend about 18" from the outside of the wall.edinnopolo - 9-13-2007 at 12:08 PM
Quote:
Originally posted by Bob and Susan
so how does a water spout take the water away from the sides????
You make the overhang big enough and you don't need gargolas. Like almost to the dirtDENNIS - 9-13-2007 at 12:15 PM
Gargola / Gargoyle........
Must come from gothic decoration, a scupper that looks like a gargoyle.
Who knows.BajaBruno - 9-13-2007 at 01:37 PM
I believe it is "gargyle" in English--gárgola in Spanish.
[Edited on 9-13-2007 by BajaBruno]Gnome-ad - 9-13-2007 at 03:27 PM
Yup, kinda like gargoyles only no scary faces, we do that part ourselves. Paulina - 9-13-2007 at 08:30 PM
This is what you want. As a professional painter, in my opinion, this is by far one of the best masonry paints you can get. It's basically an
elastomeric paint with a built in primer It's what we used on our house in Punta Banda. It can be tinted in any color. It also has a very slight side
sheen. This product isn't cheap, usually runs about $40 per gal.
Dern
This is a gargola
amir - 9-13-2007 at 10:25 PM
Quote:
Originally posted by Bob and Susan
ok what's a "gargola"????
A picture is worth a thousand words...
Color coat vs painting stucco
oladulce - 9-22-2007 at 10:36 AM
Color coating (adding powder to the final stucco layer) gives the neat variations to the wall's color, but I don't think the effect is worth down side
to using this method for a final wall covering.
To get a cool custom stucco color we mixed the powders together and of course once we needed to patch the inevitable cracks that occurred years later
, we couldn't come anywhere near that same color to apply to just the cracks. Even re-plastering the entire garage wall looked funky because of the
color fading. We've been painting our stucco ever since.
I'm using Dunn Edwards "Eff-Stop" primer, followed by 2 coats of their best quality exterior paint in a "low sheen". Their primer is suppose to block
the efflorescence from leaching out the the masonry and seems to be doing the job as well as allowing for good adhesion of the paint. Their paint
covers well, is easy to work with and appears to act as a good sealant as I've noted no excessive water absorption of the walls. But it's only been
one year and we haven't had tropical rain amounts during this time so I can't attest to the water sealant capabilities of this paint alone on the
stucco Judy.
I've been saving a little chunk of color-coated stucco from our first Baja project years ago because I loved the color so much and took it in to D.E.
where they were able to make me a paint color that comes pretty darn close . I love the color, and how it changes with the light throughout the day.
But this has been my only success story with choosing paint color, ever! As our garage full of "what was I thinking" cans of paint can attest to.
Our Baja garage interior walls will be painted with some of these "what was I thinking" colors, which should be interesting.
I appreciate the aesthetic of color-coated stucco (on other people's walls) but I'm a convert to paint.oladulce - 9-22-2007 at 10:50 AM
I opted to acid stain the concrete roof drain scuppers, and parapet and wall cap moulding to get the color variations and more of a stone-effect. Then
sealed it all with Scofield Cementone water-based sealer.
Efflorescence/Sealers
jeanajungle - 3-24-2008 at 09:12 AM
I have a persistent efflorescence problem in one room of my house. We have repeatedly sealed the roof with impermeabilizante, and I think that is
working. But somehow we are getting some water through one side, near where a palapa is attached (which might not be relevant). I'm looking for any
advice on what sealers to try both outside and inside this room. The efflorescence has followed two summer rainy seasons and I would really like to
solve it before they come again.
The outside is stuccoed, using color in the mix, with complex variations that can't really be repainted well, and the house is rounded everywhere, so
it would mean painting the whole house. So the sealer will have to be clear on the outside. Inside it can be opaque.
We have Osel, Comex, Sherwin Williams, another name I can't remember and Home Depot available. Or we could possibly have somebody bring something
down from the states. Any suggestions? Any experience with this? Any successes or failures with any products?
