A fence gate can sag for several reasons. The issue often stems from the hardware, such as damaged or bent hinges, or loose screws that can no longer support the gate's weight. The gate frame itself might also have come out of square due to failing supports. Alternatively, the problem may not be the gate but the supporting fence post, which could be leaning or out of place. In many cases, fixing a sagging gate is as simple as tightening the hinge screws or upgrading to more robust hinges.

A high-quality wrought iron fence is one of the most durable options available and can last a lifetime, or even centuries, with proper care. However, wrought iron is susceptible to rust and corrosion if not maintained.

To maximize its lifespan, regular maintenance is required. This includes:

• Cleaning the fence with soapy water every six months.

• Scrubbing away any rust or corrosion as soon as it appears.

• Applying a new coat of paint or refinishing the fence every few years to protect the metal from moisture and oxygen. The recommended frequency varies, with sources suggesting anywhere from every 1 to 10 years.

If significant rust develops, it's wise to hire a professional fence repair company to clean the rust and reseal the fence. The cost to refinish a fence is typically between $5 and $12 per square foot, a worthwhile investment to ensure its longevity.

Generally, the height of your dog fence should be 3 times the distance from the ground to your dog’s shoulder. For most small breeds, a 4-foot high fence will be more than enough to keep them from jumping out. Medium-sized breeds like Golden Retrievers, Labradors, and German Shepherds will need at least a 5-6 foot fence to stay contained. Large breeds that are also excellent jumpers, such as Greyhounds, may need a 7-foot high fence. 

Glass has one of the longest lifespans of any fencing materials, lasting anywhere from 10 to 30 years on average. Just how long your glass fence lasts depends on several factors, including how well you maintain your fence, the climate, and the type of glass you use. 

If you live somewhere with severe weather like hail, tornadoes, or hurricanes, expect your glass to have a shorter lifespan. Pool glass is one of the thickest tempered glass materials and may last longer than other options—especially compared to laminated glass.