Gorter roof hatches are the first in the industry to be supplied with a European Technical Assessment (ETA), undisputed confirmation of proven performance, and an associated CE mark.


dakluik met ceAccurate information on roof hatch performance and essential features

The introduction of ETAs linked to the CE mark makes it impossible for suppliers of manufactured items to issue an inaccurate declaration about the performance and features of the approved products. This will promote honesty in the information provided by all parties in the manufacturing sector and support transparency in the market.


The ETA document for Gorter roof hatches

The European Technical Assessment (ETA) is a document that contains information on the performance of a manufactured product as it relates to the essential features of that product. Gorter roof hatch products are also covered by a European Assessment Document (EAD). The ETA for Gorter roof hatches is issued by the Dutch “Technical Assessment Body”, the SKG-IKOB.


ETA validity

The ETA is valid in all 28 European member states and the states of the European Economic Area, as well as Switzerland and Turkey.


Performance of Gorter roof hatches

Among other things, the ETA document, registration number ETA-15/0338, defines the following, in many cases unique, performance and design features of Gorter roof hatches:

  • Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
  • Insulating (EN-ISO10077-2): Uw ≤ 0,32 W/(m².K)
  • Sound insulation (EN-ISO 717-1:2013): 26 dB
  • Watertightness (EN 12208): Class E 650
  • Resistance to wind load (EN 12210): Class E 3000
  • Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
  • Impact hard body (EN 356): Class P5A
  • Impact soft body (EN 13049): Class 5
  • Air permeability (EN 12207): Class 3


Roof hatches with CE mark

From now on, all new Gorter roof hatches will have a CE mark. The introduction of the CE mark replaces the need to carry out national inspections and the obligation to use national test standards and test institutes. This does not mean that no further inspections or tests have to be carried out. However, these will now be the responsibility of accredited institutes in accordance with European standards and there will be the guarantee of the European Technical Assessment (ETA). In addition to CE certification for its uncompromising quality, Gorter will continue to maintain its TÜV NORD, Aboma and KOMO® certification.