Is Solid Hardwood Lumber Covered by the TSCA Title VI Formaldehyde Rules?

The US formaldehyde rule for wood, TSCA Title VI (40 CFR part 770), covers three kinds of panel: hardwood plywood with a veneer or composite core, medium-density fiberboard and particleboard. Sawn hardwood lumber is not one of them. The rule does reach component parts and finished goods that are made from those panels, so a lumber order that includes panel-based mouldings, stair parts or blanks is where the question comes up. This page reads the scope of the rule for a lumber buyer. It is not legal advice.

Product in a lumber order	Covered by the Title VI emission rules?	Basis
Sawn hardwood boards, rough or surfaced	Not one of the three product types	770.3 definition of composite wood product
Finger-jointed lumber	Named exclusion	770.1(c)(9)
Glued laminated lumber (structural)	Named exclusion	770.1(c)(7)
Wood packaging, pallets, crates, dunnage	Named exclusion	770.1(c)(10)
Edge-glued solid wood blank	Not named. Not a panel with veneer or composite core	Ask the broker
Veneered panel with MDF or particleboard core	Covered. Hardwood plywood, laminated product	770.3, 770.4
MDF or particleboard	Covered	770.3
Component part or finished good with a covered panel inside	Covered through the panel it contains	770.1(b)(3), 770.30

This page is general information as of October 2026, based on the eCFR text of 40 CFR part 770. Confirm your own product with a customs broker or counsel.

What the rule covers

40 CFR 770.1 says the part applies to composite wood products, and to component parts or finished goods that contain them, that are sold, supplied, offered for sale or manufactured (including imported) in the United States. Section 770.3 then defines the term. A composite wood product is hardwood plywood made with a veneer or composite core, medium-density fiberboard and particleboard.

The same section defines the pieces around it:

• Hardwood plywood: an interior-use hardwood or decorative panel made of veneer plies joined with adhesive over a core. The core may be lumber, particleboard, MDF, hardboard, veneer or another special core.
• Composite core: a platform of particleboard, MDF or a combination, used to make hardwood plywood or laminated products.
• Component part: a non-panel object that contains a composite wood product and is used to build or assemble a finished good.
• Finished good: a non-panel product that contains a composite wood product and is not a component part.

The detail to notice is that the list of covered products speaks of a veneer or composite core. The definition of hardwood plywood lists a lumber core, but the definition of composite wood product does not. A panel with a solid lumber core is therefore a point to settle with the broker and the panel supplier, not one to assume either way.

What the rule names as excluded

Section 770.1(c) lists products to which the emission, testing and certification subparts do not apply. Those relevant to a lumber and stock buyer:

Named exclusion	Why it matters in a lumber order
Finger-jointed lumber	Finger-jointed hardwood stock and mouldings are not in scope
Glued laminated lumber, as specified in ANSI A190.1	A structural product, not an appearance blank
Structural plywood, structural panels, oriented strand board, structural composite lumber, prefabricated wood I-joists	Structural products
Hardboard	Not treated as a composite wood product
Wood packaging, including pallets, crates, spools and dunnage	Packing for a lumber shipment is outside the rule
Finished goods already sold to an end user	Antiques and secondhand furniture

The list is specific. It does not use the word “solid wood” anywhere, and it does not mention edge-glued panels. What is not a covered panel is outside the rule because it is not in the definition, not because it is on the exclusion list.

Edge-glued blanks and dimension stock

A glued-up solid hardwood blank, such as a stair tread or a panel made of boards glued edge to edge, has no veneer ply and no particleboard or MDF core. On the definitions above it does not look like hardwood plywood or a composite panel. The rule does not say so in as many words, and the exclusion list names finger-jointed lumber but not edge-glued panels. For a blank that is a regular part of your order:

1. Ask the supplier what the blank is made of: boards only, or a core of another material.
2. Ask what adhesive joins the boards. The adhesive is not the test under the rule, but it is a fair question.
3. Ask your broker to confirm in writing that the blank is outside part 770 for your product and tariff line.
4. Keep the answer with the order file.

Our page on dimension stock specifications explains solid and glued blanks as a lumber buyer reads them.

Mouldings, stair parts and mixed loads

Hardwood mouldings and stair parts are often solid wood. Some are a veneer or laminate wrapped around an MDF or particleboard core. The second kind is a component part or a laminated product that contains a covered panel, and the rule reaches it. A mixed load needs a line-by-line answer:

Line in the load	Question to ask	Document to ask for
Solid hardwood moulding	Is it solid wood or finger-jointed?	None needed under part 770 on the text, confirm with the broker
Veneer-wrapped moulding	What is the core?	If MDF or particleboard, a written Title VI statement from the supplier and the panel producer’s name
Edge-glued panel	Any veneer ply or composite core?	Written answer from the supplier, kept in the file
Plywood panel for the same project	Who produced it, who certified it?	Supplier statement on the invoice, certifier name, label on the panel

What compliant composite products carry

When a covered panel is in the load, the rule sets duties for the importer, fabricators, distributors and retailers. Under 40 CFR 770.30:

• They must take reasonable precautions to ensure the composite products they sell comply.
• The importer shows this by keeping, for three years, bills of lading, invoices or comparable documents with a written supplier statement that the product is Title VI compliant (or was produced before 1 June 2018), together with records of the panel producer and the production date.
• Importers of regulated composite wood articles must also follow the TSCA chemical import certification rules at 19 CFR 12.118 to 12.127. Confirm with the broker what applies to your entry.

Only certified panels may be sold from 1 June 2018, under 770.15, and panels carry a label that identifies the producer. California’s CARB composite wood rules are a separate check for goods sold there.

Laminated products

A laminated product is a wood veneer affixed to a particleboard, MDF or veneer core and used as a component part. Section 770.4 exempts a laminated product from the hardwood plywood definition only if the veneer is attached with phenol-formaldehyde resin or a no-added-formaldehyde cross-linked resin, and the platform was made in compliance with part 770. Since 22 March 2024, laminated products that do not meet those conditions are hardwood plywood and must meet the requirements for panel producers. This mostly matters to a millwork or flooring buyer who buys veneered parts alongside lumber.

What to ask the mill

1. Is anything in the shipment a panel, a laminated part or a part with an MDF or particleboard core?
2. If yes, who produced the panel and which third-party certifier covers it?
3. Will the invoice or bill of lading carry the written Title VI statement?
4. Is any blank finger-jointed, edge-glued or veneered, and what is the core?

A mill that ships only sawn boards can say so on the quotation and avoid most of the questions.

What a mill can say about itself

Hardwood Vendor does not test panels, certify products or give regulatory advice. It matches buyer requests with mills and yards that say they can meet them. A supplier that says its panels are Title VI compliant should name the panel producer and the third-party certifier and show the statement it puts on invoices.

What to write on the RFQ

• Say whether the order is sawn lumber only. If it includes blanks, mouldings or panels, list each product and its construction.
• For any panel or panel-based part: the producer, the certifier and the written Title VI statement on the invoice.
• For any finger-jointed or edge-glued blank: the construction and adhesive stated in writing.
• Your broker’s name, so the supplier can send the papers early.

Send your lumber RFQ with the product list and the destination, and we pass it to up to 3 mills or yards that say they can quote on that basis. For the other papers that go with a US-bound order see the import documents checklist and the Lacey Act declaration.

RFQ line: Red oak (Quercus rubra), FAS, 4/4, KD 6-8%, S2S sawn boards only, no panels, no MDF or particleboard cores. Any glued blank to be described in writing.