Paulownia trades denting at the slat edge under impact against price; basswood slats trades the opposite. The useful question is which one your non-contract hospitality overflow can absorb.
The short answer on paulownia
Choose paulownia when harder, more stable, better for contract. Choose basswood when the priority is 30-40 % heavier, higher price.
paulownia against the alternatives, side by side
| Question | paulownia | Basswood | Material | Paulownia blinds and slats | Basswood | Where it wins | Harder, more stable, better for contract | cheaper entry, simpler supply.25-0.32 g/cm3 | Where it costs you | 30-40 % heavier, higher price | see the limits below | Typical MOQ | 300-500 sets per colour | often lower, because stock is common.25-0.32 g/cm3 | Lead time | 25-35 days | usually shorter for stock items.25-0.32 g/cm3 |
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What paulownia actually gives you
Density (0.25-0.32 g/cm3). 40 % lighter than basswood, which cuts freight per set substantially.
Slat width (25 / 35 / 50 mm). 63 mm is possible but the material is soft for that span.
Slat thickness (2.5-3.2 mm).
That combination is why paulownia holds the volume position in its category.
Where basswood wins
basswood wins when the order sits below 300-500 sets per colour, when the service life is shorter than the warranty, or when the buyer is testing a market before committing. Paying for slat thickness you cannot sell is as much a mistake as saving on a material that will come back.
Paulownia: the cost of choosing wrong
The reverse mistake is also common: specifying paulownia for a product that will be replaced in eighteen months.
Paulownia: how to decide in one meeting
If you want the numbers behind either column, they are on the paulownia page and in our category overview.
Questions buyers ask before ordering
Is 30-40 % a limit or a typical value for paulownia vs basswood?
On paulownia vs basswood, nothing in tolerance changes at 30-40 %; what changes is which defects count against the lot.
What is the actual tolerance behind paulownia vs basswood?
On paulownia vs basswood, expect tolerance around 30-40 %.
Can you hold tolerance at 30-40 % for paulownia vs basswood on a repeat order?
On paulownia vs basswood, capacity on tolerance is 30-40 %.
Paulownia: the cost over the life of the product
| Cost item | paulownia | Basswood | Who absorbs it | Unit price | higher | lower | Buyer, at the order | Claim rate | low if the spec matches the use.25-0.32 g/cm3 | higher if the failure mode hits.25-0.32 g/cm3 | Buyer, 6-18 months later | Replacement shipment | rare | likely once per programme.25-0.32 g/cm3 | Buyer, plus the lost season.25-0.32 g/cm3 | Customer relationship | protected | at risk | Buyer, permanently |
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Paulownia: a trial that costs one container, not a season
- Density 0.25-0.32 g/cm3 — measured at three positions on the roll, recorded as a number rather than pass or fail For paulownia slats it is slat thickness at 2.5-3.2 mm that settles it.
- Slat thickness 2.5-3.2 mm — cut from the middle of the lot, not from the end of the roll On paulownia, skipping this is what produces denting at the slat edge under impact.
- Moisture content 8-12 % — read at 23 C / 50 % RH after conditioning, not straight off the machine For paulownia slats, the figure to write down is moisture content at 8-12 %.
- Warp tolerance 2.0 mm per metre — checked on production material, at in-process rather than only at pre-shipment On paulownia that is density at 0.25-0.32 g/cm3.
- ISO 9424 for dimensions, ASTM D143 for hardness, EN 13501-1 for reaction to fire — run to the method named above; the report travels with the lot For paulownia slats it is slat thickness at 2.5-3.2 mm that settles it.
What paulownia and basswood have in common
light weight, low price applies to either, and the test that matters is the one that reproduces it.
paulownia fails as denting; basswood fails earlier and more visibly.
Many programmes use both: paulownia where the specification is tight, basswood in the range extensions where the price point matters more than the service life.
The other paulownia comparison buyers ask about
Where paulownia wins
The failure you are buying protection against is denting: slats show dents and marks after a season of cleaning and use. If that is the failure your customer will report, paulownia is the cheaper decision even at a higher unit price.
How to decide without a trial order on paulownia
- Density 0.25-0.32 g/cm3 — measured at three positions on the roll, recorded as a number rather than pass or fail On paulownia, skipping this is what produces denting at the slat edge under impact.
- Slat thickness 2.5-3.2 mm — cut from the middle of the lot, not from the end of the roll For paulownia slats, the figure to write down is moisture content at 8-12 %.
- Moisture content 8-12 % — read at 23 C / 50 % RH after conditioning, not straight off the machine On paulownia that is density at 0.25-0.32 g/cm3.
- Warp tolerance 2.0 mm per metre — checked on production material, at in-process rather than only at pre-shipment For paulownia slats it is slat thickness at 2.5-3.2 mm that settles it.
- ISO 9424 for dimensions, ASTM D143 for hardness, EN 13501-1 for reaction to fire — run to the method named above; the report travels with the lot On paulownia, skipping this is what produces denting at the slat edge under impact.
Specifications for both are on the paulownia page and the PVC slats page.
Total cost over three years on paulownia
| Line | paulownia | PVC slats | Note | Purchase | Higher unit price | Lower unit price | Paid at the order | Claims | Lower if the spec matches.25-0.32 g/cm3 | Higher if the failure mode hits.25-0.32 g/cm3 | Paid 6-18 months later | Replacement | Rare | Likely once | Paid in the season you cannot supply.25-0.32 g/cm3 | Rework at your factory | Lower | Higher if the material behaves differently.25-0.32 g/cm3 | Paid in labour |
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A trial that answers the question in one container on paulownia
- Density 0.25-0.32 g/cm3 — measured at three positions on the roll, recorded as a number rather than pass or fail For paulownia slats, the figure to write down is moisture content at 8-12 %.
- Slat thickness 2.5-3.2 mm — cut from the middle of the lot, not from the end of the roll On paulownia that is density at 0.25-0.32 g/cm3.
- Moisture content 8-12 % — read at 23 C / 50 % RH after conditioning, not straight off the machine For paulownia slats it is slat thickness at 2.5-3.2 mm that settles it.
- Warp tolerance 2.0 mm per metre — checked on production material, at in-process rather than only at pre-shipment On paulownia, skipping this is what produces denting at the slat edge under impact.
- ISO 9424 for dimensions, ASTM D143 for hardness, EN 13501-1 for reaction to fire — run to the method named above; the report travels with the lot For paulownia slats, the figure to write down is moisture content at 8-12 %.
How to test paulownia against basswood slats without a season of stock
The paulownia versus basswood slats question is usually settled by a trial order that was never designed to settle it. Four choices turn a paulownia trial into evidence.
- Run paulownia and basswood slats on the same product, in the same colour, cut by the same operator — most comparisons of this pair are lost because the two samples were made a month apart.
- Fix density at 0.25-0.32 g/cm3 and slat thickness at 2.5-3.2 mm on both sides, so the trial is about the material and not the specification.
- Inspect at in-process as well as pre-shipment: denting at the slat edge under impact is the failure that appears between the two on paulownia, and a final check alone will not show it.
- Agree the decision line before the run: moisture content at 8-12 % or better, and slat thickness at 2.5-3.2 mm. A paulownia trial without a written pass mark becomes an opinion.
One container is usually enough for a paulownia decision if those four choices are fixed in advance, and the cost of the run is recovered the first time a lot is rejected at the destination instead of the factory.
Keep the paulownia trial material. It is the reference for every later argument about whether the paulownia slats density has drifted, and it is the cheapest document in the file.
The five-year cost of paulownia against basswood slats
On paulownia, the purchase price is the smallest part of the five-year comparison against basswood slats. Three paulownia lines decide the rest, and only one of them is on the invoice.
- Purchase price. Usually 10-25 % apart, in favour of basswood slats on a paulownia comparison. That is a real number and it is the only line most buyers of paulownia compare.
- Replacement rate. If paulownia fails at denting at the slat edge under impact within two seasons, the replacement costs the whole purchase price again, and carries the same freight and duty.
- The cost of the complaint. A sorted paulownia consignment, a credit note, a customer who now inspects everything — a line that never appears in a spreadsheet until it has happened.
The break-even on paulownia is arithmetic once the replacement rate is known: if paulownia replaces more than one lot in five, the cheaper option has already lost on density.
Which is why the trial above matters more than the quotation for paulownia. It is the only way to put a number on the middle line, and slat thickness at 2.5-3.2 mm is the figure that number hangs on.
Building a paulownia specification?
Send what you have — density, slat thickness, target market. We reply with the band we would hold and the two parameters we would test before the first bulk run.
Products in this range
Related reading
- Motorised Blinds for Rental and hospitality: Specification and Failure Risk
- How to Compare Supplier Quotes That Look Nothing Alike
- Wooden Blind Slat Specification Guide: Species, Moisture and Tolerance
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