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mjlsal 05-02-2011 02:57 PM

Stucco Installation over Aluminium siding
I lnterested in hireing a contrator to install stocco siding on my house and am getting conflicting opinions as to the proper process.
I have a two storey house with aluminium siding on the top level and brick on the bottom. I want to replace the aluminium, it is around 30 years old. My house is cool upstairs and I would like to improve the insulation level.

Two contractors said remove the aluminum (makes sense to me) while two contractors said it wasn't neccessary, they would simply screw into the studs once they found them by trial and error (I don't like the sound of that) .
Also I do not know if there is a plywood underlay under the aluminium and here again the contractors differ in want needs to be done. Is it better to have a plywood underlay installed if required.

RickyBobby 05-03-2011 06:27 AM

Never done stucco, but putting anything over aluminum siding sounds like a horrible idea. You are correct in regards to determining if there is the appropriate sheathing underneath. Tear off the aluminum and go from there. Plus, with the price of scrap, the old siding will put some cash in your pocket.

mustangmike3789 05-03-2011 07:35 AM

another thing to consider is the fact that there may be some damage under the siding. so paying good money for stucco to go over bad wood probably ins't a wise choice. rip the siding off and cash it in.

Ironlight 05-03-2011 07:52 AM

I'm going to suggest that you consider hardie board to replace the aluminum instead of stucco. It looks better than aluminum, is low maintenance, and will outlast the stucco IMHO.

Whatever you do, don't put the stucco over the siding. That's just a recipe for disaster and the quotes you got for that were lowballs trying to get your business by undercutting their competitors with an inferior solution.

Ron6519 05-03-2011 09:24 AM

Remove the aluminum siding.
Inspect the wood substrate.
Replace any bad wood and re-nail if necessary.
Are you going the traditional stucco or the foamboard and synthetic stucco?
If you have old windows, replace them before the new siding.
If you're keeping them, reflash as necessary.

fixrite 05-03-2011 10:26 AM

yeah... What Ron said....

mjlsal 05-03-2011 02:19 PM

Thanks, that was my feeling too. Never thought abote scrap value. In all cases I have to pay for disposal.

mjlsal 05-03-2011 02:29 PM

Agreed. That point came up from one of the contractors that wants to remove the aluminium.

sixeightten 05-03-2011 02:32 PM

I have never done any stucco work. I have done many other kinds of siding and have never even heard of anyone putting ANYTHING over aluminum siding. Go with your instincts on this one. Steer clear of those first two "contractors"

mjlsal 05-03-2011 02:33 PM

Interesting. The quotes to leave the aluminum on where even higher than the contactor who wanted to take it off. His was the most professional, business like quote. All I have to do now is ensure he can deliver what he says he can

sixeightten 05-03-2011 02:37 PM

Do some research on stucco siding. There are a few different methods and applications. A few years ago there was quite an uproar over water getting behind stucco on many jobs. ask for references and actually go check out the work too. Once the stucco is on, the leaks can stay hidden for years.

mjlsal 05-03-2011 02:41 PM

Thanks, foam board with a wire mesh, a layer of cement ? and then the stucco. Not replacing the windows as they are not originals (not that new either). That is one of my concerns as I don't believe the contractor who installed the windows put in very much insulation therefore I need to get behind the aluminum

mjlsal 05-03-2011 02:46 PM

Will do. Thanks

mjlsal 05-03-2011 02:50 PM

Good advice, except hard to follow. All the references are obviously one they don't mind you seeing and where new projects. However that is the process I am trying to follow.

sixeightten 05-03-2011 02:58 PM

Not true entirely. Just the fact that they give you references usually means a lot. It is true that they will steer you to the best jobs. But for hacks, there are no best jobs to steer you towards.

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