Q: Can you use CLR (calcium, lime, & rust remover) on stucco?

• <div><p>It&rsquo;s not advisable to use CLR on stucco. CLR is a powerful acidic cleaner designed for removing tough mineral stains. Stucco is a porous material commonly made of cement, lime, and sand. The acidic nature of CLR can potentially damage or etch the stucco surface, leading to discoloration or deterioration. </p><p>It is best to use cleaning solutions specifically formulated for stucco or mild household cleaners mixed with water to clean stucco siding. Always test any cleaning product in a small, inconspicuous area before applying it to the entire stucco surface.</p></div>

Question 1

How long does stucco take to cure?

Accepted Answer

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The curing time for stucco typically takes several weeks to fully complete. During the curing process, the stucco undergoes a chemical reaction and gradually hardens. It's important to note that curing is different from drying. While the surface of the stucco may dry relatively quickly within a few hours or days, the curing process continues beneath the surface, strengthening and solidifying the stucco.

It's best to avoid excessive moisture exposure during the curing period, as it can impede the curing process. The exact curing time can vary based on factors such as temperature, humidity, and the specific stucco mixture used.

Question 2

Can I screw directly into stucco?

Accepted Answer

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Yes, you can screw directly into stucco. Only do so if the item you are installing is a permanent fixture. Drill a pilot hole into the stucco using a masonry or concrete bit, then drive in the screw with a power drill or screwdriver.

Question 3

What type of exterior paint finish is best for stucco?

Accepted Answer

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The best exterior paint finish for stucco is a flat or low-gloss finish. A high-gloss finish will show imperfections in the stucco and give it a candy-coated look that many homeowners don’t like. The best types of exterior paint to use on stucco are acrylic, masonry, and elastomeric. However, acrylic is recommended because it is both durable and breathable.

Question 4

Can you use CLR (calcium, lime, & rust remover) on stucco?

Accepted Answer

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It’s not advisable to use CLR on stucco. CLR is a powerful acidic cleaner designed for removing tough mineral stains. Stucco is a porous material commonly made of cement, lime, and sand. The acidic nature of CLR can potentially damage or etch the stucco surface, leading to discoloration or deterioration.

It is best to use cleaning solutions specifically formulated for stucco or mild household cleaners mixed with water to clean stucco siding. Always test any cleaning product in a small, inconspicuous area before applying it to the entire stucco surface.