Quality products for the building industry are recognisable
by the KOMO quality mark

Products with a KOMO quality mark have been objectively tested and approved. Time and time again.
With KOMO you are certain: This is quality as promised. For instance, in the categories below.


Wood products in the building industry

Wooden (semi)finished products for the building industry, such as prefabricated wooden facade elements and doors.


Coatings and sealants

Professional coatings and sealants for all types of surfaces.


Concrete and concrete products

Raw materials and additives for concrete; concrete products, such as concrete pipes and wells.


Bitumen roof coverings

Bitumen roof coverings for both flat and sloping roofs.

KOMO certificate holders provide quality
for building and infrastructure

The KOMO quality mark is the top quality mark for the building and infrastructure sector. KOMO certificate holders distinguish themselves by getting their quality objectively tested by independent experts. Would you also like to be KOMO certified? Then watch the video clip.


New KOMO Assessment Guideline 5212-3, for listed historic building market

July 29, 2020

The new KOMO Assessment Guideline 5212-3, for the installation of 'zinc, copper and lead roof, facade and gutter structures on historic buildings and sites' is complete! Both the guidelines of the Dutch Department for the Preservation of Historic Buildings and Sites (RCE) and of the Recognised Foundation for the Conservation and Restoration Quality of Historic Buildings and Sites (Dutch ERM) were incorporated and approved during the development of this Assessment Guideline.

Monumental facades
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KOMO anticipates market developments and changing legislation

July 29, 2020

At the end of May, the new starting date of the Dutch Building Quality Assurance Act (Wkb) was set for 1 January 2022, by Minister of the Interior and Kingdom Relations, Kasja Ollongren. This means an extra year for all parties operating in the building sector, including KOMO. A conversation with KOMO director Ton Jans. “It gives KOMO the opportunity to explore the launching of new initiatives and to further develop the actions already initiated."

KOMO certificate will prove its value
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Building Quality Assurance Act: why KOMO certificate provides added value!

July 9, 2020

Jaco Uittenbogaard in Bouwbelang (Dutch technical journal) : “The builder is responsible for the products he/she processes and the processing of these by subcontractors. The application of KOMO certified products and processes provides demonstrable quality on which the builder can rely and build. This gives building companies the assurance they need to manage their liability safely."

Article Bouwbelang June 2020
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