Quiet the rooftop — before the residents hear it.
Urban vertiports operate on the rooftops of buildings whose tenants did not opt in to the eVTOL acoustic envelope. The vibration mat absorbs 90% of structurally-coupled energy at source, certified compatible with KAS Part 25.
Vertical lift transfers to the building.
An eVTOL hover transient creates a 0.3-second vibration impulse coupled directly into the rooftop structure. Without isolation, that impulse propagates through the building envelope and reaches occupied floors as a 32–45 dBA low-frequency rumble — well above the tenant-complaint threshold codified in Korean municipal noise ordinances.
- 0.3 sVibration transient · per landing eventInternal accelerometer benchmark · Q4 2025
- 32–45dBA propagated · without isolationAcoustic survey · representative high-rise rooftop
- 12–24 moPermit litigation timeline · noise disputeMOLIT K-UAM working-group review · 2024
Low-frequency absorbed; high-frequency reflected.
The vibration mat is a layered composite — viscoelastic damping core, constrained-layer reflector, KAS Part 25-rated surface. Low-frequency energy is absorbed before structural coupling; mid- and high-frequency energy reflects away from the building envelope.
- 01
Decouple
Viscoelastic core converts strain energy to heat at the source — the impulse never reaches the slab.
- 02
Reflect
Constrained-layer reflector returns mid-frequency energy upward, away from occupied floors.
- 03
Certify
Surface certified compatible with KAS Part 25 vertiport operating envelope — accelerometer audit at install.
- 04
Document
Each installation ships with a provenance package — accelerometer baseline, install photos, doctrine references for the operator audit.
What the mat does, measurably.
- 90%Vibration absorption · 8–40 Hz bandIndependent accelerometer audit
- KAS Part 25Operating envelope compatibilityCertified by Korea Aerospace Standards
- < 4 hrInstall per landing pad m²Two-technician crew · standard build
| UAM Korea Tech | Conventional rooftop pad (no isolation) | |
|---|---|---|
| Low-frequency absorption · 8–40 Hz | ~90% | ~5% |
| KAS Part 25 certification path | Compatible | Not in scope |
| Accelerometer audit at install | Included | Not provided |
| Tenant noise dispute risk | Pre-empted by construction | Litigated per complaint |
Where it lands.
- Inquiries open
Gangnam rooftop — Strategic partner pilot
A 12-storey commercial tower with mixed retail and office tenants — the dispute envelope that is hardest to wrap into permit terms.
- Scoping · 2026-Q4
Yeouido rooftop — Mixed-use planning
A flagship K-UAM corridor target — operator early-engagement scoping the install timeline against the building HVAC retrofit window.
- Available
Vertiport operator framework
For operators planning 2027 commencement, we offer a framework agreement that locks unit pricing across the first ten installations.
Unit pricing — m² basis.
The mat is priced per square metre of landing pad surface. Installation, accelerometer audit, and the provenance package are bundled. Structural retrofits (if the rooftop needs reinforcement before the mat installs) are scoped separately with the building engineer of record.
- Per m² · Mat + InstallKRW 1.8M / m²
Mat material · two-technician install · accelerometer baseline audit
- Per pad · Provenance bundleKRW 12M / pad
Doctrine reference set · install photo log · 12-month accelerometer recheck
- Framework · 10-pad rolloutNegotiated
Unit-price lock · priority install scheduling · operator audit support
Walk a rooftop with us.
We bring the accelerometer to the site, baseline the structural envelope, and walk through the install timeline against your tenant comms window. Walkthroughs run 90 minutes on-site.