Southern pine fencing · Galveston County, TX

Southern Pine Fence Installation in Galveston County, TX

Pressure-treated southern pine privacy, board-on-board and picket fences: the most economical wood fence and a strong one. With pine, the treatment does the work the wood can't. So the tag on each board, the fasteners and how wet the lumber is matter as much as the style.

  • Reviewed Sept 27, 2026
  • Sources: SFPA, USDA Wood Handbook, City of Galveston
  • Interactive tag checker
New pressure-treated pine privacy fence behind palms and a swimming pool deck
A new pine privacy fence around a pool yard, Galveston.
The short answer

"Southern pine" is a group of species, mainly loblolly, longleaf, shortleaf and slash pine. Untreated, their wood has little natural decay resistance, so fence pine is pressure-treated, and each piece carries a tag saying what it was treated for. For a fence, the Southern Forest Products Association lists UC4A (ground contact) for posts, and UC3B for uncoated pickets and rails (UC3A only if they will be painted). Most treated pine arrives wet from treatment, so boards narrow as they dry. Use hot-dip galvanized or stainless fasteners, and stainless in salt spray.

UC4AUse category for fence posts in the ground
UC3BUse category for uncoated fence pickets and rails
50%+Moisture treated lumber can carry out of the treating cylinder
7.4–7.7%Southern pine width shrinkage, flat grain, green to oven-dry

Sources: Southern Forest Products Association, Pressure-Treated Southern Pine (2019), Table 3-1 and pp. 8 and 16–18; USDA Forest Products Laboratory, Wood Handbook FPL-GTR-282 (2021), Tables 4-3 and 14-1.

What you are buying when you buy "treated pine"

Southern pine is sold as one lumber group, often stamped SYP (southern yellow pine). The USDA Wood Handbook puts pines like these in its slightly or nonresistant decay group, so for outdoor use the wood is pressure-treated: preservative is forced deep into the wood in a sealed cylinder. The treatment is what lets pine last in a fence. Pine itself is strong and economical.

That makes three things worth checking on any pine fence quote:

  • The use category on each part. Posts, rot boards, rails and pickets face different conditions and are treated to different levels.
  • Whether the lumber is wet or dried after treatment. This decides how much the boards shrink after the fence goes up.
  • The fasteners. Copper-based preservatives corrode ordinary steel.

Pine vs cedar? Read cedar vs pressure-treated pine. Worried about warping? See pressure-treated pine pros and cons. All species: the wood fence guide.

The end of a treated pine board with a plastic end tag stapled to it. Numbered fields on the tag: 1 treating company and city; 2 the standard and use category, for example AWPA U1, UC4A, ground contact; 3 and 4 the preservative and its retention in pounds per cubic foot; 5 the third-party inspection agency mark; 6 KDAT if dried after treatment; 7 the separate grade stamp with size, grade and SYP species. TREATING COMPANY, CITY AWPA U1 · UC4A · GROUND CONTACT PRESERVATIVE NAME 0.00 PCF (RETENTION) INSPECTION AGENCY MARK KDAT 2 x 6 · GRADE · SYP (GRADE STAMP) 1234567 1 WHO TREATED IT 2 STANDARD + USE CATEGORY UC4A posts · UC3B pickets, rails 3 + 4 PRESERVATIVE, RETENTION in pounds per cubic foot 5 THIRD-PARTY INSPECTION no agency mark: not code lumber 6 DRIED AFTER TREATMENT? KDAT or ADAT, only if specified 7 SIZE, GRADE, SPECIES SYP = southern yellow pine End of a treated board, with its tag Layout varies by treater; the content is what counts
A-1
DrawingReading the end tag on treated pine
BasisSFPA Pressure-Treated Southern Pine (2019), typical quality marks, p. 3 and p. 8
ScaleNot to scale
SFPA: treated southern pine must carry a quality mark, an end tag or ink stamp, and wood without the inspection agency mark does not meet building code requirements. The field that matters most for a fence is number 2.
New pine privacy fence along a lawn beside a large shade tree
Pine privacy fence beside a shade tree, Galveston.
A newly set wood fence post standing in a cleared yard, with stacked lumber and a truck behind it
Posts go in first: a 77 ft pine fence under way on Tiki Island.
New pressure-treated pine privacy fence with a rot board, along a lawn with pool equipment in the yard
New treated pine privacy fence, still pale green-tan from treatment.

Which treatment goes where on a pine fence

PartService conditionUse category (SFPA Table 3-1)
PostsSet in soil or concreteUC4A ground contact
Rot board (kickboard)Touches or sits at the soil lineUC4A ground contact
RailsAbove ground, exposed to weatherUC3B (UC3A only if painted or coated)
Pickets and trimAbove ground, exposed to weatherUC3B (UC3A only if painted or coated)

Southern Forest Products Association, Pressure-Treated Southern Pine (2019), Table 3-1 (fences) and "Use Ground Contact for Long-Term Performance". The USDA Wood Handbook Table 15-6 lists the same categories: UC3B fence pickets and rails, UC4A fence posts.

Treated pine: does the tag match the job?

Pick the use category on each part of the quote or on the lumber tags. The checker compares each one with the Southern Forest Products Association's fence table and flags fastener and drying questions to ask.

4OF 4 PARTS MATCH THE TABLE
Posts
Rails, pickets
Rot board
Fasteners
Moisture

How it decides: Southern Forest Products Association, Pressure-Treated Southern Pine (2019), Table 3-1 (fences: pickets, rails, slats and trim UC3A if coated or UC3B if uncoated; posts in ground contact UC4A), the "Use Ground Contact for Long-Term Performance" tip, and its fastener guidance (hot-dip galvanized, 304 or 316 stainless, silicon bronze or copper; electroplated typically not accepted outdoors; salt water exposure a particularly severe environment where stainless is required). A higher category than needed passes, because it is treated for harsher service. It checks the tags, not the treating, and it isn't a quote.

Wet or dried after treatment?

Treating standards require lumber to be dry before treatment: 19% moisture or less for dimension lumber. Then water carries the preservative in, and SFPA notes the wood can leave the cylinder at over 50% moisture. Most treated southern pine is delivered without being redried. Drying after treatment, in a kiln (KDAT) or in air (ADAT), can be specified, and SFPA recommends it where dimensional stability and tight fit matter.

What that means for your fence: wet boards shrink as they dry toward the outdoor equilibrium moisture. The USDA's Gulf Coast figures (Mobile and New Orleans) run about 13–15% through the year. Across a 5½-inch flat-grain loblolly board, that is roughly 7/32 inch. On a butted privacy fence, those small gaps are why many owners choose board-on-board.

A timeline in five steps: before treatment, lumber at 19 percent moisture or less; out of the treating cylinder, it can exceed 50 percent; delivered, most is not redried unless KDAT or ADAT is specified; in the fence, it dries toward outdoor equilibrium of about 13 to 15 percent on the Gulf Coast; finish, wait 30 days for semi-transparent stain and 6 months for paint or solid stain. Below, a wet 5½ inch board and the same board dried to about 14 percent, about 7/32 inch narrower, with the arithmetic 7.4 percent times one minus 14 over 30 equals 3.95 percent of 5½ inches, 0.22 inches per board. BEFORE TREATMENT 19% moisture or less (lumber) OUT OF THE CYLINDER can exceed 50% water carries the preservative DELIVERED most is not redried. KDAT / ADAT if specified IN THE FENCE dries toward outdoor equilibrium, ~13–15% on the Gulf FINISH 30 days: semi-transparent 6 months: paint, solid stain wet board, 5½″ wide dried to about 14% ≈ 7/32″ NARROWER loblolly, flat grain(gap drawn larger) 7.4% × (1 − 14 ÷ 30) = 3.95% of 5½″ = 0.22″ per board
A-2
DrawingTreated pine, from the cylinder to your yard
BasisSFPA (2019) p. 16; USDA Wood Handbook Table 4-3, Eq. 4-9, Table 13-1
ScaleNot to scale
The shrinkage uses the USDA formula with the fiber saturation point taken as 30%, which the handbook allows when it is unknown. Galveston is not in the USDA table, so the Mobile and New Orleans figures stand in for our climate.
Rail side of a new wood privacy fence along a mown lawn, showing the posts and horizontal rails
Rail side of a new wood privacy fence, Galveston.

Fasteners, cut ends and finishing

Fasteners. SFPA summarizes the model codes: fasteners in treated wood should be hot-dip galvanized, type 304 or 316 stainless steel, silicon bronze or copper. Electroplated galvanized fasteners are typically not accepted outdoors. Salt water exposure is one of the particularly severe environments where stainless is required. Hinges, screws and brackets should be the same metal, to avoid galvanic corrosion. See how much weight gate hinges hold.

Cut ends. Treatment protects a zone of the wood, not always the whole board. SFPA says any cut or hole that goes through the treated zone should be field-treated under AWPA Standard M4, usually with copper naphthenate. That matters most on post tops and anything cut near the ground.

Finishing. A finish isn't needed for the treatment to work, but it slows weathering. Wet treated pine has to dry first: SFPA suggests waiting 30 days for a semi-transparent oil stain and 6 months for paint or solid stain. See when to stain a new pressure-treated fence and our staining and sealing service.

From estimate to finished pine fence

  1. Free on-site estimate. We walk and measure the line with you, and note gates, slopes, trees, drainage and any old fence that has to come out.
  2. Spec and a written price. The price covers height, style, posts, rot board, gates, fasteners and any finish. Use the tag checker above to read it.
  3. Property line and permits. Know where your line is before posts go in. A survey is the reliable way. Check the city permit and any HOA rules.
  4. Installation. Posts first, then rails, rot board, pickets and gates.
  5. Walkthrough. Check that the gates swing and latch, and agree when the pine will be dry enough to finish.

Finished pine work: a pine privacy fence in Galveston and a 77 ft pine fence on Tiki Island.

What affects the cost of a pine fence

You get a written price after the free on-site visit. The main things that move it:

  • Length and height. An 8 ft fence uses longer boards and posts than a 6 ft one.
  • Style. Board-on-board and shadowbox use more boards than butted privacy or picket. A top cap and trim add more.
  • Lumber spec. Heavier treatment categories and lumber dried after treatment can cost more than standard stock.
  • Posts and hardware. Treated wood or galvanized steel posts, and hot-dip or stainless fasteners.
  • Gates, finish and site work. Each gate adds framing and hardware. Staining adds labor once the wood is dry. Removing an old fence, slopes and clearing add time.

See wood fence cost per foot. Financing is available through the providers on our financing page, subject to credit approval.

What customers say about their wood fences

5.0
91 Google reviews · read them all on Google
★★★★★
I chose Mustang Fencing for my backyard due to their reputation for quality and security. Their wood fencing exceeded my expectations, durable and visually appealing. The customer service was top-notch, and the installation was quick and efficient.
Maryam Saeed · Google review · a year ago
★★★★★
My new fence looks fantastic and has added both privacy and style to my yard. Highly recommend their services for anyone in need of fencing!
Jaweria Malik · Google review · 2 years ago
★★★★★
Amazing work will go ahead and recommend everyone in friends and family We installed 8ft tall double sided stained cedar wood fence in our backyard, it's really looks great, installed perfectly nice finishing and cost effective, thanks mustang fencing.
Muqeet Mohammed Abdul · Google review · a year ago

Reviews shown word for word from the Mustang Fencing Services Google Business Profile (Galveston), captured 2026-09-27.

Questions we get about this

Is pressure-treated pine good for a fence in Galveston?
Yes, when each part is treated for its job. The Southern Forest Products Association lists UC4A ground-contact treatment for fence posts and UC3B for uncoated pickets and rails. Pair it with hot-dip galvanized or stainless fasteners, and stainless near salt water.
What does UC4A mean on a lumber tag?
It is the American Wood Protection Association use category for general ground contact. The SFPA fence table and the USDA Wood Handbook both list it for fence posts. UC3B is for wood above ground and fully exposed to the weather, such as pickets and rails.
Can above-ground treated lumber be used for posts?
No. SFPA says the most common misapplication is lumber treated for above-ground use ending up where it is effectively in ground contact. Posts and any board touching the soil need ground-contact (UC4A) treatment.
Why does a new pine fence get gaps between the boards?
Most treated pine is delivered wet from treatment and shrinks as it dries. Using the USDA shrinkage figures, a 5½-inch flat-grain loblolly board drying to about 14% loses roughly 7/32 inch in width. Board-on-board overlaps hide this. Lumber dried after treatment (KDAT) shrinks less after install.
What is KDAT lumber?
Kiln-dried after treatment. The wood is dried again after the preservative goes in, so it is closer to its in-service moisture on delivery. SFPA says most treated pine is not redried, and that drying after treatment can be specified where stability and tight fit matter.
When can I stain a new pressure-treated pine fence?
SFPA suggests waiting 30 days for a semi-transparent oil-based stain and at least 6 months for paint or solid-color stain on wet treated wood. See when to stain a new pressure-treated fence.
What nails or screws work with treated pine?
Hot-dip galvanized, type 304 or 316 stainless steel, silicon bronze or copper, per the model codes as summarized by SFPA. Electroplated galvanized fasteners are typically not accepted outdoors. Use stainless in salt spray, and match the metal of hinges and fasteners.

Sources

Checked September 27, 2026. Rules change, so confirm with the City before you build.

  1. Southern Forest Products Association, Pressure-Treated Southern Pine (2019 edition) — quality marks (end tag or ink stamp); Table 3-1 fence use categories; the ground-contact tip; moisture before and after treatment and KDAT/ADAT; fasteners and connectors; field treatment of cuts under AWPA M4.
  2. Southern Forest Products Association, Finishing, Maintenance and Inspection — wait 30 days for semi-transparent oil stain and 6 months for paint or solid-color stain on wet treated wood.
  3. USDA Forest Products Laboratory, Wood Handbook: Wood as an Engineering Material, FPL-GTR-282 (2021) — Table 4-3 shrinkage (loblolly 7.4%, longleaf 7.5%, shortleaf 7.7%, slash 7.6% tangential); Eq. 4-9; Table 13-1 outdoor equilibrium moisture (Mobile, New Orleans); Table 14-1 decay resistance; Table 15-6 AWPA use categories.
  4. City of Galveston Land Development Regulations, §2.501 — residential fence heights: 8 ft; front yard 4 ft solid or 5 ft if at least 60% transparent.
  5. City of Galveston Fence Permit Application (Rev. 03/2023) — the historic district, Cedar Lawn and 1,000 ft mean-high-tide questions.
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Planning a pine fence?

We'll walk the line, go over the lumber spec, posts and fasteners, and give you a written price. Free on-site estimates across Galveston County.

Page reviewed September 27, 2026 by Mustang Fencing Services, Galveston. Next review due March 2027.

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