For most West Valley lot lines, a reinforced block wall holds up best: sun, dry air and termites don't hurt it. Aluminum or well-coated steel is best where you want a view. UV-rated vinyl works well for dividers and screens. Wood takes the most upkeep here. The right pick depends on what the fence has to do and your budget.
Updated October 2026
What does Arizona heat do to a fence?
- UV and heat fade finishes, dry out wood and can make low-grade vinyl brittle or wavy.
- Very dry air makes wood shrink and crack, which loosens fasteners.
- Sprinkler water rusts steel and softens soil under wall footings.
- Termites go after wood touching the ground.
- Monsoon wind pushes hard on solid panels and wide gates.
How do the materials compare?
| Material | Handles heat | Watch out for |
|---|---|---|
| Block (CMU) | Very well | Higher cost; leaning if irrigation soaks the footing |
| Aluminum | Very well, no rust | Less rigid for wide gates; surfaces get hot |
| Steel / wrought iron | Well, with a good coating | Rust at the base; hot to the touch |
| Vinyl | Well, if UV-rated | Cheap products can fade or warp; dust shows on white |
| Chain link | Well | No privacy; slats catch wind |
| Wood | Poorly without upkeep | Cracking, graying, termites, frequent sealing |
So which should I pick?
- Permanent privacy on a lot line: block.
- Keeping a view or watching the pool: aluminum or coated steel.
- Dividers, screens, rentals: UV-rated vinyl.
- Big areas on a budget: chain link, coated if it's in view.
- A warm, natural look you'll maintain: wood, kept off the soil and sealed often.
How do I make any fence last longer here?
Keep sprinklers off it. Pick light or desert-tone colors that show less fading and dust. Ask for a written product warranty on vinyl and coatings. And size posts and footings for wind, not just for weight. Those four steps do more than any single material choice.
Does cost change the answer?
Often. Per Angi's Phoenix-area data as of October 2026, chain link and vinyl start well below block. If budget is tight, a block wall where it matters most and vinyl or chain link elsewhere is a common mix. See fence costs in Glendale.
Where did this come from?
Angi, "How Much Does Fence Installation Cost in Phoenix?" and "How Much Does a Vinyl Fence Cost in Phoenix?" (updated February 2026), which note caliche and desert heat; HomeAdvisor block wall costs. Material comparisons reflect general practice in desert climates rather than one study, and product quality varies, so ask for written manufacturer warranties.