You can use pressure-treated wood for a horizontal fence, but you’ll need to purchase a thicker and higher-quality variety to ensure it doesn’t sag or warp after you install it. Use #2 pine grade lumber and boards and thicker dimensional lumber, such as a two-by-six. You’ll also need to use stainless steel or hot-dipped galvanized fasteners, as the chemicals in the treated lumber will cause regular galvanized fasteners to rust. 

No, fence posts aren’t always set in concrete. If you don’t want to use concrete footings for your posts, expanding foam is a popular alternative. Expanding foam and concrete each have certain pros and cons. For instance, foam is easier to install and more sustainable, but concrete is sturdier and less expensive.

Traditional bamboo fences use twine to attach pickets to posts and stringers, but you have to keep an eye on the twine, as it will deteriorate over time. Alternatively, you can fasten bamboo pickets to framing using fence screws.

In the vast majority of cases, chain-link fences are less expensive than wood fences. Installing a wood fence costs anywhere from 20% to 30% more than a chain-link fence, or an average of $3,100, whereas a similarly sized chain-link fence will average around $2,400. Even with add-ons and additional protective finishes, a chain-link fence is very likely to cost you less than a wood fence. The only exception would be a split rail wood fence, which can cost about half the price of a chain-link fence or less.