Every material decision is a trade against something. Here is what you give up on each side, stated plainly rather than as a feature list.
The short answer
Choose finished blinds when cheaper, simpler, better for large glazing. Choose roller blinds when the priority is less light control, no slat adjustment. If your programme sits between the two, the deciding factor is usually not price but the failure mode you can service: a claim you can fix in the field is cheaper than one that ends the relationship.
Side by side
| Question | finished blinds | Roller blinds |
|---|---|---|
| Material | Finished venetian blinds | Roller blinds |
| Where it wins | Cheaper, simpler, better for large glazing | cheaper entry, simpler supply |
| Where it costs you | Less light control, no slat adjustment | see the limits below |
| Typical MOQ | 200-500 sets per size and colour | often lower, because stock is common |
| Lead time | 25-40 days | usually shorter for stock items |
What finished blinds actually gives you
Headrail (25 mm steel or aluminium). Steel is stronger and rusts; aluminium is lighter and costs more.
Slat (25 / 35 / 50 mm, wood or PVC). The material decision cascades into weight, price and warranty.
Ladder tape / cord (polyester, 12-25 mm). Tape width affects the visual and the cord friction.
That combination is why finished blinds holds the volume position in its category. It is not the cheapest option and it is rarely the most premium; it is the one where the performance is predictable enough to quote a warranty against.
Where roller blinds wins
Cheaper, simpler, better for large glazing.
Be specific about which programmes. roller blinds wins when the order sits below 200-500 sets per size and colour, when the service life is shorter than the warranty, or when the buyer is testing a market before committing. Paying for ladder tape / cord you cannot sell is as much a mistake as saving on a material that will come back.
The cost of choosing wrong
The visible cost difference is the price per unit. The invisible one is the claim rate. The blind creeps down and will not hold position. When that happens, the saving per unit is usually smaller than the cost of one replacement shipment, and the relationship cost is larger than both.
The reverse mistake is also common: specifying finished blinds for a product that will be replaced in eighteen months. In that case the premium buys nothing the customer can see.
How to decide in one meeting
- Write the service life the end customer expects, and compare it with 25-40 days of production plus transit.
- Write the conditions, then name the one that maps to ladder tape / cord.
- Ask both suppliers for operation cycles on the same sample, with the same method.
- Compare landed cost including the expected claim rate, not the unit price.
- Record the decision and the reason, so a cheaper quote later does not reopen it.
If you want the numbers behind either column, they are on the finished blinds page and in our category overview.
Questions buyers ask before ordering
Which child-safety standard applies to my market?
EU/UK: EN 13120. US: 16 CFR 1120. Canada: CCPSA. Australia: the corded internal window coverings regulation. They are not interchangeable, and a generic certificate is not evidence.
Can you supply made-to-measure?
Yes, with a 1-2 mm width tolerance. For recess fitting, tell us the measuring method you use, because inside-recess and outside-recess need different deductions.
What is the cycle life of your cord lock?
Specify 5000 cycles at 5 kg on the assembled blind. Cheap locks fail around 1500-2000 cycles, which is one or two years in a hotel.
The cost over the life of the product
Unit price is paid once. The other three lines are paid later, and they are the reason two quotes that differ by 20 % can produce the same margin.
| Cost item | finished blinds | Roller blinds | Who absorbs it |
|---|---|---|---|
| Unit price | higher | lower | Buyer, at the order |
| Claim rate | low if the spec matches the use | higher if the failure mode hits | Buyer, 6-18 months later |
| Replacement shipment | rare | likely once per programme | Buyer, plus the lost season |
| Customer relationship | protected | at risk | Buyer, permanently |
The arithmetic that matters is not the difference in unit price. It is whether one replacement shipment and one lost season cost more than the premium, and for most programmes they do.
A trial that costs one container, not a season
- Take production samples of both materials, not development samples.
- Run them through the process your factory will use, including the wash or the assembly.
- Test the one failure you cannot accept, on both, with the same method.
- Put the result next to the landed cost, and decide before the range is designed around either.
What finished blinds and roller blinds have in common
Both are specified against the same end-use conditions and judged by the same customer, which is why the comparison is closer than the price difference suggests. cycle life, safety, blackout options applies to either, and the test that matters is the one that reproduces it.
Where they diverge is the failure. finished blinds fails as cord lock slipping; roller blinds fails earlier and more visibly. An early visible failure is cheaper to handle than a late invisible one, even when the material costs more.
Many programmes use both: finished blinds where the specification is tight, roller blinds in the range extensions where the price point matters more than the service life. That is legitimate provided the two are not sold under the same description.
Three questions, and the answers that separate mills
If the finished blinds quotation in front of you is going to be decided on a call, take these three questions into it.
| Question | Answer that should worry you | Answer that holds up |
|---|---|---|
| Which test catches cord lock slipping? | “We have never had a complaint.” | Squareness — on the production lot, with the acceptance figure written into the report and not into the email. |
| May I see a report for a lot you shipped last month? | “That is confidential customer information.” | A redacted report, which carries every number that matters and none of the customer’s identity. |
| Where in the wood, PVC, or aluminium band will this order sit? | “In the middle, normally.” | A stated target and the readings behind it. Bottom rail drifting inside the band is how a conforming lot still fails. |
Failure modes, and the test that catches each one
A specification only earns its keep if it names the failure it prevents. These are the two that matter for the finished blinds quotation in front of you.
| Failure | What triggers it | Test to demand on the production lot |
|---|---|---|
| Ladder cord fraying | Sharp edges on the headrail or an undersized pulley. | Cord load — static load test; acceptance per standard |
| Blind not square | Cutting error or unequal cord length during assembly. | Colour match — D65 + dE; acceptance dE <= 1.5 |
The other two, with acceptance numbers attached, are in the full failure analysis for finished blinds. A supplier who cannot name the mode he sees most often is describing a catalogue, not a process.
Comparing two options for a live programme?
Send a window schedule or a single set size and we will return a quotation with the loading plan, the safety standard that applies to your market and the lead time for the colour you need. Catalogue and current price list on request.
Related reading
- Bottom rail in Finished venetian blinds
- Finished Blinds vs Shutters
- What Finished Blinds Really Costs
Catalogue and current price list · Neutral packing and private label · Consolidation, documents and lead times
