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06131 901113006131 9011130
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info@dr-dachbau.deinfo@dr-dachbau.de
20 years of trusted expertise
Your specialist for
all things flat roofing
Your specialist for
all things flat roofing
Since our refounding in Mainz in 2020, we have combined skilled craftsmanship with modern roofing systems and reliable project management. What started locally has grown into nationwide operations – serving private, commercial and public-sector clients who value quality workmanship, clear communication and long-lasting results.
Our Typical Clients
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Private Homeowners
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Commercial Property Owners
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Property Management
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Large-Scale Developers
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Public-Sector Clients
A roof for...
Everyone deserves a good roof over their head.
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More Than 20 Years of Experience We understand the typical challenges of flat roofing – from minor damage to complex renovations. Our experience enables informed decisions, professional workmanship and long-lasting results.
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Clean & punctual work ethic Reliability isn't just a promise – it's our standard. We work on schedule, follow structured processes and leave every site clean and tidy, without unnecessary delays.
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Tailored Solutions Every roof is different, which is why we don't rely on one-size-fits-all solutions. We carefully assess your situation and develop an approach that makes sense both technically and economically.
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Honesty & Transparency We place great importance on clear communication and transparent quotations. You'll also have a dedicated point of contact who will guide you throughout the entire project.
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More Than 20 Years of Experience Our experience enables informed decisions, professional workmanship and long-lasting results.
-
Clean & punctual work ethic Reliability isn't just a promise – it's our standard.
-
Tailored Solutions Every roof is different, which is why we don't rely on one-size-fits-all solutions.
-
Honesty & Transparency We place great importance on clear communication and transparent quotations.
FAQ
How long does a newly built flat roof last?
A newly built flat roof typically lasts between 20 and 40 years. Its lifespan depends on the quality of the materials, workmanship and maintenance. Regular inspections and minor repairs can significantly extend its service life.
How often should a flat roof be maintained?
A flat roof should be inspected at least once a year, and ideally twice a year. This allows minor damage to be identified early and helps prevent more costly problems later on.
Can insulation be added to an existing flat roof?
Yes. Additional insulation can be installed on an existing flat roof and is often added as part of a roof renovation. It can significantly improve energy efficiency and help reduce heating costs in the long term.
When should a flat roof be renovated?
A flat roof should be renovated when leaks, cracks or standing water become an issue. Renovation may also be advisable after 20–30 years. Regular maintenance can delay the need for renovation, but cannot replace necessary renewal of the waterproofing and insulation.
What type of insulation is best for a flat roof?
The best insulation depends on the roof structure. PIR, EPS and mineral wool are among the most commonly used materials. The key is to professionally combine the insulation and waterproofing system to achieve optimum energy efficiency and long-term durability.
What are the benefits of a green flat roof?
A green flat roof can improve thermal insulation, protect the waterproofing membrane and extend the roof’s lifespan. It also retains rainwater, improves the local microclimate and enhances the appearance of the building. Subsidy programmes may also help make the investment more financially attractive.
What should I do if my flat roof has water damage?
Water damage should be addressed immediately. The source of the leak should first be identified, for example through professional leak detection. The waterproofing can then be repaired. The faster the problem is addressed, the lower the risk of further damage to the insulation, structure and interior.
How can I tell if my flat roof is leaking?
Common signs include water stains, damp areas or mould inside the building. Standing water, cracks or damaged seams on the roof can also indicate a leak. Regular roof inspections help identify and repair problems before they become more serious.
When is a repair sufficient instead of a full renovation?
A repair is usually sufficient when the damage is minor and localised, while the rest of the roof remains in good condition. If there is widespread damage or the roofing materials have reached the end of their service life, a full renovation may be the more economical and sustainable solution.