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A fence post set in concrete lasts anywhere from five to over 25 years, depending on how well the concrete was applied and the fence post’s material. Untreated wood posts in concrete could last less than 10 years, but a durable, treated wood set in properly applied concrete could last a few decades. However, all fence posts will wear out eventually, so expect to need to replace your fence post every five to 15 years.

Concrete log siding is not the same as fiber cement siding. Fiber cement siding is made from a mixture of cement and cellulose fibers, while GFRC is made from cement, glass fibers, and polymers. The materials are similar in their durability, longevity, and curb appeal, and the main difference is that concrete log siding is available in more styles that resemble traditional log siding. Fiber cement is also less expensive, with materials costing around half what you’d pay for concrete log siding.

You can dry pour concrete over existing concrete, but it’s best to use wet pour concrete instead. Dry pour concrete is easier to apply, but in order for new concrete to adhere to old concrete, it needs the right mixture for slow, uniform curing. Additionally, dry pour concrete is less durable and less resistant to cracking and concrete sinking, so dry pouring over an existing slab may result in surface imperfections appearing prematurely.

Poured concrete should be set and hard to the touch within 24 to 48 hours, although it depends on the humidity in the air, the thickness of the concrete, and the type of concrete. It’s best to leave concrete to set for three days before exposing to foot traffic or stress. Concrete takes between 20 and 30 days to cure and reach its peak strength, so for foundations and retaining walls, plan to wait about a month before placing any load on your concrete.