How should a construction products site publish its DoP?
On a construction products manufacturer’s website, CE is shown only together with the product’s declaration of performance and conformity; the declaration may be published on the site, but it must be unalterable, downloadable, free of charge, permanently accessible and linked to the product-type code. The EU’s new Construction Products Regulation (2024/3110) has applied in general since January 8, 2026; some provisions of the old regulation live on until 2040 for the transition.
Cement, glass and ceramics carried about 1.9% of sector-based exports registered with the Turkish Exporters Assembly (TİM) in 2025, at 4.50 billion dollars. This guide is the detail of the construction products row of the certificate map by sector; what a declaration of conformity is, is explained in the EU declaration of conformity entry.
Which document does a construction products buyer ask for?
A declaration more than a certificate: the product’s declaration of performance, which under the new EU regulation becomes the “declaration of performance and conformity”. Under the regulation, the declaration is drawn up before the product is placed on the market (Art. 13), and CE marking may be affixed only with this declaration (Art. 17(2)). Ceramic tiles are a concrete example: EN 14411:2012 stands in the Commission’s list of February 2026 as the harmonized standard for ceramic tiles, so this product needs a declaration and CE marking.
For the Turkish market, the rule is in a separate regulation: under Article 9 of Turkey’s Construction Products Regulation, the declaration of performance is drawn up in Turkish, may be provided electronically or on paper, and is given on paper on request; under Article 10, CE may not be affixed to a product without a declaration. Construction products without a harmonized technical specification, on the other hand, carry the G mark on the basis of a national standard or a national technical approval; a product cannot carry CE and G together.
So for construction products, the word “certified” on its own says little: what a buyer looks for is the declaration for the product type and the performance values in it. A quality management system certificate describes the company, not the product’s performance; the two sit in separate places on the site. According to the EU’s guidance, CE marking is not proof of conformity either, but an important indicator of it; the proof is in the declaration itself.
How is the declaration of performance published on the website?
Under the conditions listed in Article 16(2) of the regulation. When published on the site, the declaration must be unalterable, readable by humans and machines, downloadable, permanently accessible and free of charge; the page must state how to access it, and the declaration must be linked to the product-type code. In practice: each product type’s declaration is a file named with its own code at a permanent address; the product page links to that file, and when the file is updated, the old version stays in place and the new one gets a separate address. Unalterability is therefore a matter of file organization. Access instructions are one of the conditions too: the page says in a sentence or two where the declaration sits and in what format it is downloaded. Because in the Turkish market the declaration is also given on paper on request, how to request a printed copy sits in the same place.
| Item | On the website | Basis |
|---|---|---|
| Declaration of performance and conformity, with the product-type code | Yes; unalterable, downloadable, free of charge, permanently accessible | 2024/3110 Art. 16(2) |
| CE marking | Only together with the declaration | 2024/3110 Art. 17(2) |
| Declaration of performance in Turkish, for Turkey | Yes; electronic or on paper, on paper on request | Turkish Construction Products Regulation Art. 9 |
| G mark | On a product without a harmonized technical specification; not together with CE | G mark regulation Art. 5 |
| CE without a declaration, or a “CE certificate” | No | Regulation Art. 10 · Your Europe |
Where declarations and marks belong on a construction products website
- 01Declaration of performance and conformity
- 02CE marking
- 03Declaration of performance in Turkish, for Turkey
- 04G mark
- 05CE without a declaration, or a “CE certificate”
What should a construction products website not say?
- “CE certificate” or “CE-certified company”: there is no central EU body that issues certificates for CE, and voluntary “CE certificates” have no legal standing.
- Showing a product without a declaration as CE marked.
- Showing CE and the G mark together on the same product.
- Changing a published declaration in place: the declaration must be unalterable, and a new version is published separately.
- A single general declaration file not linked to the product-type code.
When does the new Construction Products Regulation apply?
The regulation entered into force on January 7, 2025 and has applied in general since January 8, 2026; some of its articles have applied since January 7, 2025. The old regulation (305/2011) was repealed on January 8, 2026, but some of its articles live on until January 8, 2040, only for products covered by harmonized standards and assessment documents listed under the old regulation. New obligations reach a product family one year after the implementing act that makes the standard mandatory for that family; the penalties article (Art. 92) applies from January 8, 2027. The digital product passport comes 18 months after each product family’s act.
On the Turkish side, Annex 5 of the Construction Products Regulation was amended on February 20, 2026; a regulation transposing the new EU regulation (2024/3110), however, could not be found as of November 10, 2026. The text that applies to the Turkish market today is the regulation based on the old EU regulation.
How does a buyer verify the declaration?
From the declaration itself and the product-type code. The buyer matches the code on the product label with the code of the declaration on the site; if the declaration shows that a notified body took part, the body’s identification number is searched in NANDO. NANDO is the EU’s database of notified bodies; if the number is written in the declaration, the search is a single step. A permanently accessible, unalterable declaration means a buyer who returns to the same address months later finds the same document. For your management system certificates, the four-step path is in the is a company’s ISO certificate real guide.
How are the product page and the machine layer built?
The product page carries the product-type code, the link to the declaration and the declaration’s essential performance values with units in a table; for the Turkish market, the declaration is in Turkish. The regulation wants the declaration to be machine-readable too; in our reading, that means not a scanned image but a file whose text can be selected. In the machine layer, the product-type code and the declaration’s address can also be written into the product’s structured data, knowing that Google does not use certification markup for construction products: Google supports it only in merchant listings, for the EU energy label and vehicle CO2 classes.
A short checklist for a construction products website
- Is each product type’s declaration at a permanent address under its own code?
- Is the declaration file downloadable, free of charge and with readable text?
- Does the product page link to the declaration with the product-type code?
- Is CE only on products that have a declaration?
- Is there a declaration in Turkish for the Turkish market?
- Do CE and the G mark appear together on the same product?
- Does the old version of an updated declaration stay in place, with the new one at a separate address?
The information here is not legal advice; confirm which rule applies to you from official sources and from your certification body’s current requirements.
Let’s read how your declarations of performance are published on your site together: in a free preliminary review we send a written note on which declaration meets the regulation’s conditions.
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For a site that shows your certificates as a record buyers can verify, B2B website builds and measures the certificate page, the product scope and the path to a quote together.
FREQUENTLY ASKED QUESTIONS
Can I publish the declaration of performance on my website?
Yes. Under the new Construction Products Regulation, the declaration may be published on the site, provided it is unalterable, readable by humans and machines, downloadable, permanently accessible, free of charge and linked to the product-type code.
Can CE and the G mark be used together?
No. The G mark is for construction products without a harmonized technical specification; a product cannot carry CE and G together.
Does the new Construction Products Regulation apply in Turkey?
A Turkish regulation transposing it could not be found as of November 10, 2026. The text that applies to the Turkish market is the Construction Products Regulation based on the old EU regulation; its Annex 5 was amended on February 20, 2026.