Airtightness, Blower Door testing, and innovation applied to efficient construction.
At CleanFinTech, we combine physics, chemistry, and advanced diagnostics to design buildings that are more airtight, efficient, and comfortable. Our work integrates Blower Door testing, technical consulting on airtightness, and an R&D project on sealants that measurably improves the energy performance of the building envelope.
Request a QuoteAirtightness and Blower Door Testing in Madrid
At CleanFinTech, we specialize in airtightness—one of the most critical factors for the energy performance of a home or building. Proper sealing of the building envelope ensures energy efficiency, comfort, and durability; however, its quality cannot be taken for granted—it must be measured.
We have developed an innovative methodology that combines Blower Door testing, advanced diagnostics, and sealing solutions—all applied during a single intervention, whenever feasible. This allows you to obtain your airtightness rating, a clear technical report, and a solid foundation for complying with the CTE DB-HE1 and standards such as Passivhaus.
Stop assuming that your building is well-sealed. Verify it with real data and make more confident decisions.
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Passivhaus Consultancy in Madrid and Mallorca
CleanFinTech is independent of builders, manufacturers, and suppliers. This independence allows us to offer Passivhaus consulting focused on actual building performance, rather than on product sales.
We support architects, project management teams, and developers in:
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Airtightness Strategy and Construction Details
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Project and Construction Review
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Preparation for Passivhaus Certification
Thanks to our experience in Blower Door testing and advanced diagnostics, we guarantee that every intervention aligns with the highest standards of energy efficiency.
We work on new construction and rehabilitation projects, including single-family homes, residential buildings, and industrial and commercial facilities.
Read moreConstruction and Performance of High-Efficiency Passive Buildings
We specialize in technical solutions for highly energy-efficient Passive buildings, aligned with the Passivhaus standard and the future requirements of the CTE. Our approach is not merely formal or aesthetic; rather, it focuses on thermal performance, infiltration control, airtightness, and the durability of the building envelope.
A well-designed and properly sealed building envelope reduces heating and cooling demand, improves indoor comfort, and facilitates access to certifications and incentives linked to energy efficiency.
Read moreR&D in Hermetic Sealants
We develop innovative airtightness sealing solutions—validated through Blower Door testing—that optimize energy performance and simplify execution based on technical diagnostics.
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Improve the airtightness of the building envelope.
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Simplifies execution on the actual job site.
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Increases the durability of the seal.
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Reduce errors, rework, and setup times.
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Optimize results in Blower Door tests.
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Contributes to the overall energy efficiency of the building.
Airtightness and Blower Door Testing in Madrid
With over 30 years of experience, at CleanFinTech, we combine technical diagnostics, Blower Door testing, and applied innovation to become a strategic partner in high-energy-efficiency and sustainable construction projects.
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Solid technical foundation: real-world experience in energy, construction, and diagnostics.
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Measurable methodology: indicators such as N50 and leakage rate.
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Applied Approach: On-site validation of each solution.
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Long-term vision: efficiency, comfort, and alignment with the energy transition.
Frequently Asked Questions about Airtightness, Blower Door Testing, and Technical Consulting
1. What problem do we solve with airtightness? +
A lack of airtightness leads to uncontrolled air infiltration, which increases energy consumption, compromises indoor comfort, and hinders regulatory compliance. Through our Blower Door tests, we measure actual air leaks and propose effective solutions that enhance the building’s thermal performance. In doing so, we guarantee efficiency, durability, and sustainability in every project.
2. Why an R&D project on sealants? +
Proper sealing is key to achieving good results in a Blower Door test and to ensuring a building’s energy efficiency. Our R&D project on airtightness sealants seeks solutions that are more durable, easier to apply, and perform better in real-world construction settings. We validate every advancement with measurable data, thereby improving both the execution and the overall performance of the system.
3. How is R&D integrated with field services? +
We test our sealant developments directly in real-world interventions. We measure their impact using Blower Door tests, thermography, and technical diagnostics, refining both the product and the methodology based on data. This integration ensures a direct link between research, practical application, and continuous improvement in efficient construction projects.
4. Do you work only on single-family homes? +
No. At CleanFinTech, we apply our solutions to single-family homes, multi-family buildings, renovation projects, commercial spaces, and even industrial projects. We tailor every service—including airtightness, Passivhaus consulting, and sealing—to the client’s specific needs, always maintaining a technical approach and delivering measurable results on-site.
5. Why is it important to measure airtightness using real data? +
Because no building should be considered efficient without data to back it up. With the Blower Door test, we obtain objective figures regarding the quality of the building envelope’s airtightness. This allows us to identify construction defects, optimize thermal comfort, and comply with regulations such as the CTE DB-HE1 or the requirements of the Passivhaus standard.





