Düsseldorf Building Thermal Check

I am finalising a small retrofit application for an existing building in Düsseldorf and need a lean, no-frills bauphysikalische Stellungnahme that I can drop straight into the permit package. The core issue is Wärmeschutz; a quick eye on Schallschutz or Abdichtung is welcome only where it helps head off obvious objections, but the thermal side drives the brief. What I will send you: • Current plans (PDF/DWG) and material specs • Notes from the designer about planned interventions What I expect back: • A focused review of the existing insulation levels on the exterior Wände plus all Fenster und Türen, with U-value or thermal-bridge comments where relevant (DIN 4108 / GEG as anchors) • Practical, clearly ranked recommendations for improvement alongside a short confirmation of the “as-is” performance • A 1–2-page memo in German, delivered as an unlocked PDF, that I can attach to the Bauantrag without triggering further queries from the authority Please keep the calculations traceable yet concise—no extensive annex, just enough to demonstrate diligence. Turnaround of five days after you receive the final files would fit my timeline perfectly.

Project ID: 40215562

Location: Düsseldorf, Deutschland