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Do you need a permit to build a fence if you are simply replacing an existing fence? Whether you need a permit in this case depends on your local laws and regulations. Most municipalities consider a fence replacement project as being equal to building a new fence, so you likely will need a permit. Check with your local building inspection department or zoning department to see if you need a permit. If you hire a local fence contractor, this pro can take care of obtaining all permits for you.

All fences offer some degree of privacy, but standard perimeter fences may not be designed with that in mind. Dedicated privacy fences, however, tend to enclose smaller areas and feature more high-end materials that truly emphasize seclusion and comfort. Additionally, privacy fences typically offer fewer gaps to peek in through than standard fences, though you can likely adjust that to suit your preferences. 

The thickness of a glass fence varies widely based on its application and whether or not there are any safety requirements, but most fences are between 8 millimeters and 12 millimeters thick. 12-millimeter-thick glass is extremely strong and overkill in most cases, which is why you typically only see it around pools and in skyscrapers.

There are two things you can do to make a fence replacement easier—but keep in mind that easier doesn’t mean better. First, you can use a jack or some other type of machinery to pull the post out of the ground. If that’s not available, a digging bar can help.

Second, you can backfill the hole with gravel rather than creating a concrete footing. Keep in mind, gravel is less secure. You should only use it if you’re installing a lightweight fence or have heavier, clay soil.