Lumber Delivery Inspection Checklist: Check Your Order Before Use

Before unloading and before use

Prepare before the truck arrives

Have the order, quote, approved substitutions, packing list and supplier's delivery and claims terms available. Arrange safe unloading, suitable supports, weather protection and access to the load. Use appropriate handling equipment and personal protective equipment; do not climb an unstable load or enter the unloading area.

Record the order as delivered

Note the delivery date, supplier, order number, product descriptions, bundle identifiers, quantities and visible packaging damage. Photograph the load and labels before removing them where practical. Compare what is accessible first and complete the detailed count after safe unloading.

Describe observations without overclaiming

Separate freight damage, dimensional differences, grade questions and moisture concerns. A visual defect is not necessarily outside a grade's allowance. Avoid cutting or consuming disputed material before you have recorded it and sought supplier instructions.

Follow the actual carrier and supplier procedures for delivery exceptions and claims. A signature may have contractual significance, but there is no universal acceptance rule in this guide. Review the specification checklist to understand the agreed requirements.

Inspection by product type

Hardwood and appearance boards

Check stated species, rough or surfaced thickness, minimum usable widths and lengths, and appearance requirements. Note checks, splits, bow, cup, twist, sapwood, stain and metal contamination where relevant. Evaluate defects against the ordered grade and part requirements, not a blanket 'defect-free' expectation.

Structural lumber

Record species group, grade stamp, agency and moisture designation when present. Keep grade identification associated with the stock. Do not assign a structural grade yourself or approve a substitution because the replacement looks similar. Refer material concerns to the supplier and the responsible design professional.

Treated products

Retain end tags and bundle information. Compare use category, preservative, retention and quality marks with the order. Wet treated wood may be expected depending on processing; appearance or surface color does not establish treatment quality or retention.

Reclaimed material

Check provenance and previous coatings or treatments before machining. Metal detection and visual inspection cannot establish that a board is free from hazardous contamination. Suspected lead-containing finishes, unknown chemicals or structural uncertainty require competent assessment before use.

Measure dimensions and moisture

Count and measure using the agreed convention

Measure thickness and width at representative locations and record lengths. Distinguish nominal sizes from actual delivered dimensions. A dry surfaced 2×4 is typically 1½ × 3½ inches; rough or green stock can differ. Four-quarter hardwood does not promise a one-inch finished board.

For a disputed order, document which boards were measured, where and with what tool. A small sample can reveal issues but does not certify every board. Keep the supplier's billing-volume convention separate from actual finished volume.

Moisture reading procedure

Record meter make/model, pin or pinless mode, species setting, temperature correction if required and measurement location. Follow the meter manual for board thickness, depth and surface conditions. Pinless readings may be affected by material underneath; surface wetting and preservatives can affect readings. Take multiple readings across representative boards and record a range rather than a single reassuring number.

Delivery moisture and installation readiness are different questions. Kiln-dried material can reabsorb moisture. Compare readings with the purchase agreement and expected service environment. Where accuracy is disputed, agree an appropriate verification method with a qualified party. Use the moisture and acclimation tool as a planning reference, not a certification.

Read grade stamps and treatment tags

Read structural grade stamps

Identify the species group, grade, grading agency and moisture designation as applicable. In common softwood marking conventions, S-DRY indicates 19% moisture content or less at surfacing, S-GRN indicates above 19%, and MC15 indicates 15% or less. Check the issuing agency's rules and the exact stamp. These designations describe a processing condition, not a fresh meter reading on delivery.

Read treated-wood end tags

For AWPA-standardized products, look for AWPA U1, use category, preservative and retention with units, plus applicable quality marks. UC4A is general ground contact; higher-hazard or critical conditions may need another category. Retention is preservative- and species-specific, so do not compare bare numbers across different treatments.

Hardwood grade is not a visual perfection label

NHLA grading considers qualifying clear cuttings under detailed rules, including board and cutting requirements. Some defects may be permissible. If grade is disputed, preserve the boards and ask for the appropriate grading review rather than trying to resolve it using photos alone.

Continue with lumber grades and the wood-defect reference.

Document quantity and cost discrepancies

Reconcile shortages and billing

Compare ordered and delivered counts and agreed board-foot, linear-foot, piece or sheet quantities. Separate missing items from items shipped in different lengths or substitutions. Check whether freight, milling and unloading services match the quote.

Build an evidence record

Keep the invoice, purchase order, packing slip, delivery receipt, bundle labels and original photographs. For each discrepancy, record the identifier, ordered requirement, observation, measurement method and requested resolution. Do not invent an acceptance tolerance after delivery; refer to the contract and relevant grade rules.

Example: quantity discrepancy

An illustrative order lists 40 pieces of a specified length, but the safe post-unloading count is 38. Record the count, photograph bundle identification and ask the supplier whether two pieces are backordered or omitted. Do not assume that a credit or replacement is automatic.

Contact the supplier promptly using its stated process. Claims deadlines and remedies vary by agreement and jurisdiction; seek appropriate advice for a contractual dispute.

Inspection mistakes to avoid

• Cutting disputed material before documenting it or receiving instructions.
• Treating a moisture stamp as a current moisture measurement.
• Rejecting every knot without checking the actual grade allowance.
• Measuring surfaced stock but disputing a clearly agreed rough-volume billing basis.
• Assuming a sample establishes the condition of the entire load.
• Discarding treatment tags before recording exposure suitability.
• Treating unknown reclaimed wood as ready for sanding or indoor use.
• Assuming wet treated wood is automatically improperly treated.

Delivery checklist and primary sources

Arrival checklist

• Arrange safe unloading and suitable storage.
• Match the load to the order and packing list.
• Record visible freight damage and product identifiers.
• Count material and measure representative boards.
• Record meter settings and moisture-reading locations.
• Retain grade identification, treatment tags and sourcing documents.
• Document differences and follow supplier/carrier procedures promptly.
• Resolve concerns before using disputed material.

Next steps

Plan storage and acclimation using the wood-moisture reference. For a future order, use the specification checklist.

Primary sources and limitations

• USDA Wood Handbook: wood condition and property context.
• USDA Chapter 13: moisture determination, handling, storage and dimensional changes.
• AWPA homeowner guidance: treatment tags, quality marks and use categories.
• AWC span-table tutorial: species, grade and structural design context.

Reference links checked during preparation on October 1, 2026. Use the current issuing agency's grading rules, meter instructions, supplier terms and project requirements. This is not a formal grading inspection or legal opinion.