Is the aluminum alloy door soundproof and heat-insulated?
Direct Answer
Yes. Landran doors can be filled with sound insulation cotton, PU foam core, or aluminum honeycomb core — effectively blocking outdoor noise and reducing indoor temperature loss by up to 8°C.
Core Options Comparison
| Core Type | STC Rating | R-Value | Best For |
|---|---|---|---|
| Sound Insulation Cotton | STC 35+ | R 2.5 | Residential entry |
| PU Foam Core | STC 38+ | R 3.5 | Cold climates |
| Aluminum Honeycomb | STC 40+ | R 3.0 | Premium / commercial |
Landran's multi-chamber aluminum profiles further break thermal bridges, while EPDM weatherstripping seals gaps completely. The combination delivers industry-leading thermal and acoustic performance.
Case Study
A Canadian client in Edmonton (winter lows −35°C) installed Landran PU-foam-core doors. Interior temperature differential improved by 8°C vs. their previous steel door. Noise levels dropped from 65 dB to 32 dB.
Key Data
STC 40+Max Sound Reduction
R 3.5PU Foam R-Value
−35 °CField Tested
Related: Custom Size & Color · Glass Window Design
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