can this be used to fix a rottened window sill?

The Platinum Patch product is very good if you are filling an area that is not too large of a gap. The product dries very hard overnight and when I had areas more than 1/4" I would apply the product in multiple coats allowing at least 12 hours between coats. For the scope of what you're talking about I think epoxy would work better for the majority of the work and Platinum patch to do finishing work. Platinum Patch dries to a very hard surface and sands very well to complete the work.

Once this stuff starts drying, is it enough to just add water?

I assume you mean "drying in the plastic canister". In that case, I don't know. You need to keep it closed so it doesn't dry out. If you mean "drying on the surface you applied it to", you can probably re-shape it for about 30 minutes. After it is dry, it is water-resistant. It works very well, and holds up well, outdoors.

Is the price for 1 container or 2?

It comes in 32 oz and 16 oz. I ordered 2 and got 4 times 16 oz

Will platinum patch fill small holes and Gauges in concrete siding?

Unsure, it might. We used it for wood with excellent results. We are very happy with the results we were looking for. It dries very solid to the point it’s hard to sand down, if that helps.

Platinum Patch 16oz | Desertcart Brazil

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Description

🛡️ Seal the Deal with Platinum Protection!

RAPID CURING - Fully cured and rain-ready in just 24 hours.
VERSATILE APPLICATION - Strong adhesion to fiber cement, PVC, vinyl, metal, and more.
DURABLE LONG LASTING - Resistant to cracking, swelling, and loss of adhesion.
ULTIMATE WEATHER SHIELD - Exceptional weatherproof protection against the elements.
MOLD MOISTURE RESISTANT - Ideal for areas exposed to moisture and algae.

DAP Platinum Patch Advanced Exterior Filler is a high-performance solution designed for repairing and finishing various materials, including fiber cement, PVC, and wood. It offers exceptional weatherproofing, rapid curing, and long-lasting durability, making it a must-have for any professional looking to ensure quality and longevity in exterior applications.

Reviews

H**N

22.03.2026

S**H

16.02.2026

K**E

25.10.2025

T**O

10.02.2026

S**E

23.03.2026

C**Z

25.01.2026

T**R

3.10.2025

R**R

13.07.2025

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Platinum Patch 16oz

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