Reclaimed heart pine

Overview

Heart pine is the heartwood of old-growth longleaf pine (Pinus palustris), once cut for factories, warehouses and ships and today available mainly as reclaimed lumber. It is a yellow pine, but dense and fine-textured: Woodcraft describes longleaf as the strongest and densest southern yellow pine, nearly as dense as red oak. It reads as warm, golden and tight-grained, and darkens to amber or burgundy. People choose it for floors and heirloom tables where an old-growth look is wanted.

Pros

• Hard for a softwood: the Wood Database gives 870 lbf Janka and about 650 kg/m3 dried.
• Tight, straight grain from slow growth; Wikipedia notes trees took 200 to 400 years to mature.
• Rich colour that deepens with light exposure.
• Rare, and carries real history.

Cons

• Expensive: many dealers list $11 to $13 per board foot, and clear river-recovered stock reaches about $40.
• Resin pockets bleed, gum up sandpaper and can fight finishes.
• Splits when hand-nailed; screws need pilot holes.
• Reclaimed boards may hide nails, old paint and rust stains from fasteners.

Variants and subspecies

• Building-reclaimed: pulled from old mills and warehouses; likely to show nail holes, saw marks and patina.
• River-recovered or "sinker" pine: logs raised from river bottoms; cleaner, often kiln-dried, and the premium grade.
• Grades: dealers offer No. 1, Select and edge-grain selections for flooring; E. T. Moore quotes about $12.50 to $19 per square foot for these.
• Look-alikes: slash, loblolly and shortleaf are ordinary southern yellow pine and are lighter and cheaper.

Working and finishing

It works more like a hardwood than white pine. Expect splits when nailing by hand, so pre-drill. Resin pockets are a problem: wipe the surface with mineral spirits or paint thinner, and for power sanding that melts resin and clogs paper, sand by hand or use a cabinet scraper (per Woodcraft). If you buy river-recovered boards, confirm they are kiln-dried so the resin has been evaporated or crystallised. Check for hidden metal as with any Reclaimed lumber.

Staining and finishing colour

Heart pine seldom needs stain and rarely takes it evenly; it darkens in light, moving from deep yellow toward burgundy. A penetrating oil shows the colour best, and a satin polyurethane topcoat adds durability. Seal any visible pitch pocket with one or two spot coats of dewaxed shellac first. A bright dye can be used on toys or playful furniture to emphasise the grain.

Sustainability and handling

The Wood Database lists longleaf pine as not in the CITES appendices but Vulnerable on the IUCN Red List (population reduction over 20 percent across three generations; checked 2026-09). That is a strong reason to prefer reclaimed over new. Longleaf once covered about 140,000 square miles (Wikipedia). Pine dust can irritate; use extraction. Treat old paint as suspect for lead if the building predates 1978.

Popular projects

Flooring is the biggest use, followed by dining tables, benches, mantels, cabinet faces and stair parts. The USS Constitution has a keel of a single length of longleaf pine, which tells you how structural it is.

Buying notes

Sold by the board foot as lumber, by the square foot as flooring, and as beams. Prices vary widely: about $11 to $13 for typical reclaimed boards (Vintage Woods) up to $40 for clear river stock (Woodcraft). Local salvage yards give bargains but little processing; specialist dealers (Goodwin, Cataumet and others) offer wider boards and kiln-dried stock. Look for tight, even rings and ask about moisture, resin and metal checking.