Acoustic Insulation
| Role | Primary Spec | Local Alternative | Verification |
|---|---|---|---|
| Wall cavity | Rockwool RWA45 50mm | Isover (local distributors) | NRC ≥ 0.85 at 500Hz |
| Wall cavity (thick) | Rockwool RWA45 70mm | Locally-produced glasswool equivalent | NRC ≥ 0.85 at 500Hz |
| Ceiling / plenum | Rockwool ProRox SL 930 100mm | Isover 100mm equivalent | NRC ≥ 0.90 |
Gypsum Board
| Primary Spec | Local Alternative | Verification |
|---|---|---|
| Knauf 12.5mm standard | Gyproc Syria (local production) | Density ≥ 8.5 kg/m² |
| Knauf 12.5mm standard | Al-Arabiya gypsum board | Density ≥ 8.5 kg/m² |
| Knauf 16mm (Wall 3) | No local equivalent at 16mm | Import required for Wall 3 |
Green Glue Compound
Primary
Green Glue Compound
Application
2-tube coverage per 4×8 sheet
Alternative
QuietGlue Pro (same application method)
⚠ Local availability
NO local equivalent — must import
Minimum order
12 tubes for Wall 7 (both faces + D4 frame)
Acoustic Sealant
| Primary Spec | Local Alternative | Notes |
|---|---|---|
| Tremco acoustic sealant | Silicone sealant (construction grade, non-hardening) | Acceptable for non-critical joints only |
[AC] Tremco REQUIRED for all [AC] penetration seals — do not substitute. Local silicone is acceptable only for decorative/non-acoustic joints.
RSIC Clips / Resilient Mounting
| Primary Spec | Alternative | Notes |
|---|---|---|
| RSIC-1 clips (concrete walls) | Kinetics RIM clips | Import required — no local equivalent |
| RSIC-V (diagonal walls) | Kinetics RIM clips | Import required — no local equivalent |
Ceiling Tiles
| Room | Primary Spec | Local Alternative | NRC |
|---|---|---|---|
| VO / Control / Studio | Rockfon Sonar E (600×600mm) | Armstrong Optima | 0.90 → 0.85 (slightly lower but acceptable) |
| Editing Suite | Armstrong Ultima+ (600×600mm) | Any 600×600mm mineral tile | 0.70 → minimum 0.65 |
Sylomer SR28 (Float Floor)
Primary
Sylomer SR28 (Getzner Werkstoffe)
⚠ Local availability
Import required — no local equivalent
Minimum spec
28 kg/m³ polyurethane, natural frequency ≤12Hz under design load
Contact
Getzner Werkstoffe regional distributor
Panel Fabric
| Primary Spec | Local Alternative | Test Method |
|---|---|---|
| Acoustically transparent fabric (Class A fire rated) | Any lightweight woven fabric from local textile markets | Hold to light — should see through |
Avoid: Vinyl, rubber-backed, or coated fabrics that block sound. These will reduce panel NRC by 30–50%.
Door Hardware
| Component | Primary Spec | Local Alternative |
|---|---|---|
| Acoustic door seals (perimeter + drop seal) | Pemko or equivalent | Import required — no local equivalent |
| Door hinges | 3× heavy-duty stainless (D1: 4×) | Standard heavy-duty sufficient |
Note: The seal system IS the acoustic performance — the door leaf provides mass, but the seals provide the actual STC rating. A $2,000 door with bad seals performs worse than a $500 door with perfect seals.