dga-Group: Strong brands for strong roads and building structures

With our well-known brands BIGUMA®, PROXAN®, COLZUMIX®, NILA® and DOBAU®, we have been ensuring durable and safe roads and building structures for over 50 years. At the same time, our products are characterized in particular by easy processability in both cold and hot applications.
Our homepage provides a complete overview of our products for road construction, building protection and industry. Do you have any questions or need technical advice? Get in touch with us!

Material calculator

Use our free material calculator to calculate the order quantity of dga products for your construction site.


Are you looking for a certain product or product group? Simply enter the name in the search list. This will take you to the product you’re looking for.

Research and development

The development of new and customised solutions is a cornerstone of our success. This means we invest in not just modern laboratory equipment but also our qualified human resources. read more

Quality management

We owe our strong market position in the road construction and building protection segments to our successful quality policy. Our customers have our full support throughout all stages of their project, including in-depth consulting, the development of customised solution and the delivery of the final product, ready for processing. Their planning security benefits from our reliability as a supplier. read more


November 24th, 2022|

Joint sealant BIGUMA®- Connect available again

The popular joint sealant BIGUMA®- Connect from Dortmunder Gußasphalt GmbH & Co. KG is […]

July 22nd, 2022|

Streamlined supply thanks to improved formulation of PROXAN® joint sealants

From 08.08.2022, Dortmunder Gußasphalt GmbH & Co KG will offer […]

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