DBN V.2.6-31:2021 addresses thermal insulation and building energy efficiency in Ukraine. This guide explains a review workflow; it does not replace the numerical requirements.
Document and status
The checked official register entry lists the document as active. Its title is Thermal Insulation and Energy Efficiency of Buildings; the entry references the approval order dated 30 December 2021, No. 366, and subsequent orders. Establish the applicable full-text edition for the project.
Review questions
Simplified explanation: envelope performance and whole-building energy are related but distinct assessments. Wall insulation alone cannot establish whole-building compliance.
Resistance, U and inclusions
ZeroHouse recommendation: record the method, areas, materials and included thermal bridges with each result. A homogeneous clear-wall section does not represent slab edges or window installation.
Whole-building efficiency
Coordinate envelope inputs with ventilation, heating, cooling and occupancy. Changes to windows or equipment after calculation require a model-impact review.
Drawings and common mistakes
Check layers, thermal boundaries, opening areas and junctions. A common error is copying an old requirements table without checking edition, climate conditions or scope.
What has not been verified here
The complete official text and numerical tables were not available for independent checking. Minimum R, maximum U and exemptions are therefore withheld; register status does not verify every technical clause.
| Item | Parameter | Check / result |
|---|---|---|
| Status | Official register | Checked 2026-09-09 |
| Numerical requirements | Full text | Verification required |
| Design | Model + drawings | Coordinated set |
What this means for your project
Request the designer’s document register with editions and relevant clauses. Review thermal bridges and summer comfort separately.
Sources and scope of review
Related reading
- Building Energy Efficiency in Ukraine: Regulatory Map
- EN/ISO Standards for Building Physics: A Practical Navigator
- R-Value and U-Value: How to Read Thermal Performance