Sourcing Teak for a Superyacht Refit Without a Color Break

What a Refit Consumes in Teak

A refit does not buy teak once, it buys teak four or five times across a schedule that can run a year, and every one of those buys has to look like the first. Deck planking is the obvious line. Behind it sit caprails and covering boards, cockpit gratings and tables, handrails and grabrails, interior soles, and the visible joinery faces in the saloon and staterooms. Those scopes do not land in the same week. They do not come out of the same thickness either.

Thickness is quoted in quarters of an inch of rough thickness. 4/4 is nominal 1 inch rough, 8/4 is 2 inches, 16/4 is 4 inches, and surfaced dimensions come off those rough numbers rather than off the finished size shown on the drawing. Deck planking and sole stock come out of thinner material. A caprail that will be laminated and faired wants heavy stock, and heavy stock is a separate purchase with its own availability picture.

The line item that quietly runs over is color. Teak out of one parcel reads as one material. Boards pulled from a second shipment two months later read as a patch, because teak ambers as it oxidizes and no two parcels start at the same tone. An owner walking the side deck at handover sees the seam between two lots long before anyone brings up grade or moisture content. So the real sourcing question on a refit is not where to find teak. It is who will commit a single lot, hold the balance of it indoors, and release it against a build schedule that is going to move.

Why Teak Moves Differently Than Domestic Hardwood

Teak arrives as a finite lot rather than a continuous supply, and that one fact should shape the entire buying plan. Domestic White Oak at roughly 1,360 lbf on the Janka scale, or Black Walnut at roughly 1,010 lbf, can be reordered against running inventory for months and the new boards will sit next to the old ones without comment. An import parcel has a size, an origin and a date. When it is gone, the next parcel is a different parcel.

Documentation rides along with the material. J. Gibson McIlvain is an FSC certified importer and miller, so chain of custody paperwork travels with certified stock instead of being reconstructed months later when an owner's representative or a project specification asks for it. On a refit whose interior specification carries sourcing language, that paperwork is part of what gets delivered.

The practical consequence is scheduling, not paperwork. A refit team that buys teak phase by phase has agreed, without intending to, to a color break at every phase boundary. A team that reserves one lot and draws against it is working the way the material actually behaves.

Grading Language and What It Does Not Cover

North American hardwood grading measures yield, not beauty, and imported teak does not travel on those rules at all. The National Hardwood Lumber Association rules grade a board by the yield of clear face cuttings it will give up. FAS is the top grade and requires a minimum board of 6 inches wide by 8 ft long yielding 83 and 1/3 percent clear face cuttings. FAS One Face, written F1F, meets FAS on the better face. Selects meet FAS on the better face at a smaller minimum size.

No. 1 Common requires 66 and 2/3 percent clear face cuttings and a minimum board of 3 inches by 4 ft. No. 2A Common requires 50 percent. None of those is a defect call. A No. 1 Common board is sound material that yields smaller clear cuttings, which makes it the economical grade for short parts and the wrong grade entirely for a long clear run such as a caprail blank or a continuous sole plank.

Teak reaching a refit yard comes on export trade descriptions that do not map onto that system. The purchase description has to do the work a grade letter would otherwise do. Width, length, grain orientation, allowable sapwood, allowable color spread and the clear face requirement per piece all belong in writing. Putting the letters FAS on a teak drawing and expecting them to govern is how a parcel shows up technically defensible and visually wrong. Consistency between phases is the other half of it. A description written once and applied to every release keeps the fourth delivery looking like the first, and it gives both sides something to measure against when a board is rejected on the dock.

Vertical Grain and Why Deck Stock Is Specified That Way

Quartersawn and rift stock moves less across its width than plainsawn, which is why deck planking and any wide flat surface get specified vertical grain. A quartersawn face brings the growth rings up close to perpendicular to the surface, so the plank wears evenly and the grain lines stay tight and parallel as the wear face comes down over the years.

Plainsawn teak in the same application telegraphs the ring pattern as it weathers, and it has more width to give up seasonally. The USDA Forest Products Laboratory Wood Handbook sets out the shrinkage geometry behind this, and the short version is that movement across the width of a plainsawn board runs substantially higher than across a quartersawn one of the same species.

Cupping on a finished surface is driven by how the board is installed and how well it is ventilated behind, not by which species appears on the invoice. A vertical grain plank bedded over a ventilated substrate stays flat. The same plank sealed tight against a cold wet surface on one face and hit by sun on the other will move no matter which species the paperwork names.

Drying Teak to the Number the Job Needs

Interior joinery wants an in-service moisture content near 6 to 8 percent and exterior work near 12 to 16 percent, and teak's oil content makes reaching either number slow. Those are not quality grades. They are service targets, and the right one depends on where the piece lives once the vessel is back in the water.

J. Gibson McIlvain mills interior joinery blanks to the 6 to 8 percent range and exterior stock to the 12 to 16 percent range, which matters most where the two scopes meet. A caprail sitting near 14 percent fastened against interior joinery conditioned to 7 percent is two pieces of wood on two different schedules of movement, and the detail at that junction has to absorb the difference rather than fight it.

Air dried stock settles near the local equilibrium moisture content and is not a substitute where an interior tolerance matters. Building Science Corporation has published extensively on how wood tracks the relative humidity around it, and a yacht is a hard case for exactly that reason. A vessel that winters in New England and summers in the Caribbean puts its interior joinery through a wider swing than most buildings ever see.

The answer is not a drier number. It is a realistic conditioned range for the vessel, material milled to sit inside it, and joinery details drawn to let the wood move. Specifying 6 percent on stock headed for an unconditioned bilge locker buys trouble twice.

Holding One Lot Across a Phased Job

The only reliable way to keep a refit's teak matched is to commit the full requirement at once and release it in phases, and that only works if somebody will hold the balance. Few boatyards have the covered space, the stacking discipline or the inventory system to sit on a year of teak without damaging it or losing track of which bundle belongs to which scope.

J. Gibson McIlvain holds over seven million board feet of exotic and domestic lumber at its Maryland yard, which is what makes a single lot commitment realistic on a scope this size. Depth is what lets a lot be assembled for color and grain in the first place, and it is what keeps a wide caprail blank or a long clear plank from turning into a change order halfway through the job.

J. Gibson McIlvain also stores finished material for inventory control, so the undelivered balance of a reserved lot stays indoors and stays identified rather than sitting under a tarp through a winter at the yard. That is the difference between phasing a material and gambling on it.

"On a refit, the hardest part is never finding teak. It is having the same teak available in month nine that we shipped in month two, and that comes down to committing the lot early and keeping the balance under our roof until the yard calls for it."

Norm Moton, Director of Sales, J. Gibson McIlvain

Reserving a lot also changes what the yard can promise. A joinery foreman who knows the stock exists can sequence around a delayed structural item instead of waiting on a delivery date nobody controls.

Lead Time and the Release Schedule

Lead time on a refit is not a single number, it is a reservation date plus a release calendar. The reservation date is driven by import timing and by kiln schedules. The release calendar is driven by the yard, and the yard's calendar always moves, usually because something opened up during demolition that nobody drew.

Build the release calendar backward from the hard dates. Deck planking has to be on hand before the deck is faired and bedded. Caprail blanks have to arrive early enough to acclimate in the shop before they are laminated. Interior joinery stock should land after the vessel is closed up and conditioned, not before, or it will equalize to the wrong humidity and then move again.

J. Gibson McIlvain ships nationwide and runs material to California regularly, so a yard on either coast draws from the same reserved inventory rather than from whatever is local that month. For refits in the Pacific Northwest or the Gulf, that is often the deciding factor, since the alternative is a second lot with a second color.

J. Gibson McIlvain resaws and rips teak on band resaws and gang rip saws before it leaves, which cuts the volume of overthick stock a boatyard has to break down and store. Final sizing, the cut list and the fitting stay with the refit yard's own joinery crew, where they belong.

Machining Teak and Keeping Glue Lines Tight

Teak dulls tooling and resists adhesive, and both of those are supply decisions before they become shop problems. The silica content that makes teak so durable outdoors also takes the edge off knives and saw blades faster than any domestic hardwood will. A shop running teak plans for more frequent sharpening and sizes its stock allowance accordingly.

The natural oils are the other half. Glue surfaces have to be freshly machined, with little time between the cut and the clamp, and the adhesive has to be chosen for oily stock rather than for convenience. A caprail scarf that fails two seasons in usually failed at the glue line, not in the wood. The Wood Database entry for teak covers the working properties and the published density figures in detail.

That is why extra thickness in the order matters. Teak that arrives at exact finished dimension leaves nothing to machine off, and surfaces that sat for weeks need to be skimmed before glue-up. Ordering with a real machining allowance saves far more schedule than it spends.

Alternates When Teak Cannot Cover the Whole Scope

When one teak lot will not cover every scope, the right move is to pick the species that each scope actually needs rather than stretching the lot thin. The millwork palette is Sapele, Iroko, Afrormosia, Teak and Utile, which is sold as Sipo, and those are the species a millwork shop reaches for when a component has to be milled, glued or machined.

Iroko has been the working alternate to teak in marine joinery for decades. Afrormosia sits close to teak visually and takes a clear finish well. Utile covers long interior runs and door and frame stock in widths and lengths that are harder to find in teak. Published density figures for all three are collected on the Wood Database rather than quoted from memory.

For painted exterior components, Sapele is the better call than Genuine Mahogany. It holds paint better and it comes in a wider range of sizes and longer lengths, which matters on a long run with few joints. Sapele is not milled 1x8 for exterior use, since that width will not stay stable in the weather.

Open-grained and oily species absorb a great deal of finish, so a primer coat evens out the eventual painted surface, and sanding or buffing after priming knocks back grain raising while keeping moulded detail crisp. That sequence matters more on a refit than on a building, because the painted work is inspected at arm's length in bright light.

Where near zero movement is the requirement, modified wood is the honest answer. Accoya runs roughly 1,600 lbf with acetylation giving dramatically reduced shrinkage and swelling. Thermory and Abodo Vulcan are both carried as well. All of the modified products top out around 16 ft, most of them sold on metric lengths just under 16 ft because of kiln size, and thermally modified Ash is not available wider than 8 inches. A wide board in a modified product means Accoya or Abodo Vulcan.

Warranties follow that same line. Modified products carry them. Solid unmodified wood does not and cannot, since it is an organic material responding to the environment it sits in. Anyone offering a warranty on solid teak is selling something other than teak.

One note on the hard tropical species a yard might be tempted to substitute. Ipe, which is Tabebuia spp, along with Cumaru, Garapa, Jatoba and Red Balau, are decking stock. They are extremely hard and carry high oil content, which makes them difficult to glue, so a millwork shop uses them far less than a decking supplier does. For a laminated caprail, a glued grating or any machined joinery component, Teak, Iroko, Afrormosia, Sapele or Utile is the species to be looking at.

How J. Gibson McIlvain Would Specify This

Specify one teak lot, one written board description, two moisture targets and a release calendar, then hold the balance indoors until the yard calls for it. That is the whole method, and each piece of it exists because a refit has failed on that point before.

Start with a takeoff that covers every scope, including the caprails and the gratings that usually get added later, and reserve the lot against the total. Write the board description once. Width, length, grain orientation, clear face requirement, allowable sapwood and allowable color spread, applied identically to every release.

Set the moisture targets by location, not by habit. Interior joinery blanks at 6 to 8 percent, exterior stock at 12 to 16 percent, with the conditioned range of the vessel stated in the purchase so the kiln target is not a guess. Order vertical grain for deck planking and for any wide flat surface, and order with a machining allowance so glue surfaces can be skimmed fresh.

Then phase the releases against the yard's hard dates rather than the contract dates, and expect to move them. J. Gibson McIlvain mills the stock to the thickness and moisture content each phase needs, breaks down the heavy material on resaws and rip saws, and ships the releases as the schedule firms up. ICD, the company's architectural millwork division, builds true custom case work planned around a specific space where an owner's shoreside project calls for it.

To reserve a teak lot for a refit, work through a takeoff or talk through a release schedule, call J. Gibson McIlvain at 800-638-9100 or review the milling services available at the yard. Bring the drawings and the haulout date. Both change what the order should look like.