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evperry

07:23PM | 03/31/04
Member Since: 03/31/04
3 lifetime posts
Bvmisc
i recently hired someone to stucco the exterior of my house and it did not come out properly. he put one layer of tar paper, then wire and then the colored mortar (stucco).

the problem is that it did not dry properly sand is it very uneven and spotted.

my question is, do i repaint the house and add a thin layer of the acrylic stucco to finsih it properly.

i am hearing conflicting things abotu painting and doing another light coat of stucco.

ANY advice of them would be apprciated.

homebild

08:58PM | 03/31/04
Member Since: 01/28/03
693 lifetime posts
Stucco is normally applied in 3-4 coats and never as your contractor has done.

While it is correct to apply a water proofing membrane such as tar paper, and while it is correct to install some sort of wire mesh in order to hold the stucco in place....

The first layer of stucco is almost always a 'brown coat' which is simply just common mortar spread over the wire mesh.

A second coat of brown coat mortar is then applied over that.

A third coat, or 'base coat' of colored stucco is then applied over the built up mortar.

A fourth coat of colored stucco mixed applie dover that either as a 'splash' coat or as a 'rubbed' coat.

-------

One coat of colored stucco is an incorrect application of the mix.

evperry

04:11AM | 04/02/04
Member Since: 03/31/04
3 lifetime posts
how about if i just apply a layer of acrylic stucco over the 1st coat of stucco, woudl that be enough?

thanks.

homebild

12:59PM | 04/02/04
Member Since: 01/28/03
693 lifetime posts
Not normally.

evperry

01:24PM | 04/02/04
Member Since: 03/31/04
3 lifetime posts
what problems should i expect to have with just 2 coats?

Glenn Good

10:19AM | 04/05/04
Member Since: 09/10/03
314 lifetime posts
One of the biggest problems with only one thick layer or two thin layers is the overall thickness and/or strength of the stucco. Without the proper thickness of stucco built up in multiple layers you will likely experience cracking problems over time.

A single layer that is applied too thick will develop stress cracks very early on during the curing process. These cracks will expand over time and come through a thin finish layer applied over top.

The overall thickness of the finished stucco should be around 3/4" - 1" thick.

Another good idea (I know it is already too late for your project) is to use 2 layers of felt paper under the stucco instead of just one. The layer that comes into direct contact with the stucco will deteriorate over a short time from the cement and lime in the stucco. After this happens the layer underneath will still protect the house from water intrusion.

Glenn


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