The Fence Post

When researching the type of wire fence you want to purchase, there are many things you want to consider before making a decision. Have you thought about the following?

• Aesthetic considerations - how important is appearance?                                                                                                                                                                      
• Function is a significant factor - what do you want to keep in or out?                                                                                                                                    
• Cost is important - should you buy the least expensive product or invest in fencing material that will last a long time and save on the future expenses and labor of early replacement?                                                                                            
• Country of origin may be something you want to take into account - is there any connection between the quality of a fence and where it is made?                                                                                                                                                     
• The topography of the site should be considered - are there irregularities on the ground's surface where the fence will be located?                                                                                                                                                                                     
• Manufacturing method is important - is a welded product a better choice than a woven fence mesh?                                                                          

Finishes for Your Fence

When making a decision about which wire fencing material to use, one of the most important aspects to take into account is the type of "finish" the wire has. There are four basic types:

1. GBW - Galvanized Before Weld and Galvanized Before Weave                                                                                                                                                
2. GAW - Galvanized After Weld and Galvanized After Weave                                                                                                                                                      
3. VC - Vinyl Coated welded and woven                                                                                                                                                                                   
4. SS - Stainless Steel and other alloys.

GBW

Galvanized before weld wire fences can be either welded or woven. Galvanized wire is used to manufacture the mesh.

Welded products - the zinc coating is burnt off during the welding process. The welded points where the horizontal and vertical wires intersect are left unprotected and exposed to rust and corrosion. In wet weather, moisture tends to collect at the joint, hastening the process.

While it is true that zinc can "flow" from the areas adjacent to the burnt intersection, the weld spot never regains its full protection. These are the types you see in your local building supply store and garden center. Differences in gauge, mesh opening size and height are considerable. You can find a product that will meet your needs. It is important to keep in mind the fact that these items have a limited lifetime. Welded GBW fencing materials are relatively inexpensive and utilitarian.

Woven products - these do not have any welded areas and therefore do not have the same vulnerability. These range from lightweight hex netting up to field fence and heavy gauge woven high tensile deer and wildlife fence. The heavier fences have an extended lifetime, especially those with Class 3 galvanizing.

GAW

Galvanized after weld fencing materials are galvanized after the welding or weaving process. The mesh is drawn through a bath of molten zinc which thoroughly seals the wire, including the welded and woven areas. These products are heavily protected from rust and corrosion and have an extended lifetime that far exceeds the lifetime of the same products with GBW finish. You can tell if a product is galvanized after by looking at the welded and woven areas. You can actually see how the zinc seals the areas. GAW items are initially more expensive. However, when you consider the extra material and labor cost of replacement, the higher initial cost of GAW meshes are easily justified.

GAW fencing is more specialized and therefore are not as easy to find at retail stores. The welded meshes are often used in making animal cages. They are ideal to use in areas where there is constant moisture or exposure to corrosion. There is an even wider range of choices in wire gauge, mesh size and widths due to the more specialized end uses of these items. The GAW hex netting meshes are often used in saltwater applications and in building game bird pens - areas where long life is sought and appreciated.

VC

Vinyl coated fencing materials are coated with either polyester or PVC after the welding or weaving process. The most common colors are black and green. The black color is the most unobtrusive. It blends with the background, becoming virtually invisible. As with GAW products, the vinyl coating thoroughly coats the entire mesh, sealing it against rust and corrosion. The additional cost is offset by longer life expectancy and more attractive appearance. Many different specifications are widely available in retail stores. The vinyl makes them aesthetically pleasing.

As with any products, there are different quality grades available. The least expensive products do not bond the vinyl securely to the wire. The vinyl is easily cut and can then be peeled off the wire with your fingers. The higher quality grades have a vinyl coating that is tightly bonded to the wire and resists scraping, even with a knife. And there are products available that have the double protection of GAW wire under the coating. These offer the longest lasting meshes available. As always, higher quality means higher cost. You get what you pay for. Higher initial cost can save you money over the life of the mesh.

In addition to the regular generic retail items, there is a wide range of gauge and mesh opening size specialty items not available in stores. There are welded meshes used in lobster traps, safety mesh in railings, animal cages and other unique applications. Woven hex meshes are used in such things as bird pens and deer fence.

SS and other alloys

Stainless steel fencing materials are perhaps the most specialized type available. They have the advantage of being resistant to rust, corrosion, and other environmental stressors. Stainless steel welded wire meshes have often been used as fences in coastal areas. They are quite expensive and can be difficult to impossible to obtain at retail stores. Their appearance is more utilitarian than attractive. These items have an extended lifetime. Other alloys such as copper are also available in a variety of gauges, mesh sizes, and weaving styles.

A Helpful Overview for All Styles of Woven Wire Fence

This is our favorite video for figuring out how to stretch your fence tight. This video shows you how to make and use a homemade fence stretcher you can use to pull your fence tight. In the video, 2" x 4" galvanized welded wire mesh is being installed. But this type of stretcher can be used for all styles of woven wire fence as well. Steel stretcher bars are also available to buy, if you don't want to make your own.

It is important to have a level pull uniformly across the height of the fence to avoid distorting the mesh. The amount of tension is determined by the type of mesh. Welded wire fencing material cannot be tightened as much as woven wire meshes, such as field fence, horse fence, deer and wildlife fence.

And don't forget to bring along a helper like Little Bit!

They seem similar...

Are you looking for galvanized welded wire fence? Do you know you have a choice? There are two types of galvanized welded wire fencing materials:

• GBW (Galvanized Before Weld)
• GAW (Galvanized After Weld)

Visually they appear very similar. But taking a closer look, you can see the difference. And after they have been installed, the difference becomes more remarkable with the passage of time. Which one is a better value, longer lasting, more readily available?

Checking for the burn--

 GBW

As its name implies, Galvanized Before Weld fencing material is made as follows: Galvanized wire is fed into the welder. At the weld point where the wires cross, the zinc is burned away during the welding process. Sometimes you can actually see the burn (as in the picture above). This is the most obvious way to differentiate between GBW and GAW wire mesh. Look for the burn. Of course, when this happens, the wire is left unprotected from rust and corrosion. And this is the spot in the wire mesh that collects water when it gets wet. The water and any corrosive entities it contains will hang out in the intersection, slowly eating away the steel.

With So Many Uses

GBW welded wire mesh is a utilitarian, readily available generic product. It comes in a wide variety of different gauges, mesh sizes, and roll sizes. This type of mesh and fencing material has many different uses. If you want an inexpensive mesh with a moderate lifetime expectancy, GBW is the ideal choice. For a mesh with impressive longevity, please read on--

Now, turning to...

GAW

Galvanized After Weld wire mesh is a superior, higher quality, longer lasting product. After being welded, the mesh is drawn through a bath of molten zinc. The wire intersections are thoroughly sealed and protected from exposure to environmental sources of corrosion and rust. As seen in the above picture, corrosive elements have no access to the wire or weld points. The heavy layer of zinc will protect the underlying wire for years, even when exposed to harmful chemicals and other environmental stressors.

Savings on Repairs and Replacement

GAW fencing materials are far superior to GBW. And they will last years longer than GBW. This is why they are the perfect choice to consider when you want a galvanized welded wire fence. Your initial investment cost is higher. But that is more than offset by the extended lifetime of the wire. Not only will you get years of use from your fence. But also you will save on the expenses of repairs and replacement. Why go through those frustrations and hassles?

The Right Wire

GAW meshes are the best choice for animal cages as well. The heavy galvanizing will stand up to corrosion from feces and urine. The need for cage replacement will be diminished greatly. Higher initial cost of a quality product will ultimately save you money.

With An Important Difference

In general, GAW products are harder to find. There are few retail stores that sell them, partly due to their greater expense. But the demand for these higher quality welded wire fencing materials is not very strong. That's because most people do not know about Galvanized After Weld and that there is a huge difference.

When people say the wire is galvanized, they are usually thinking about the generic GBW products. GAW never comes to mind, even though they might prefer to buy a higher quality product. The assumption is made that since the wire is galvanized, it will last for years. However, if they only knew, they could purchase something far better that would satisfy them for a lot longer.

So what do you think? Do you have any projects where using a higher quality product makes sense to you? Is quality more important to you than price?