Green Glue Noiseproofing Compound (28-oz Tube)
Green Glue Noiseproofing Compound is a viscoelastic damping layer applied between drywall sheets to dissipate vibration and quiet adjoining rooms. Not a construction adhesive — it functions as a Constrained Layer Damping (CLD) medium that converts sound-wave mechanical energy into low-grade heat by shearing under vibration, dramatically reducing sound energy across an assembly. The single 28-oz tube fits any standard bulk caulk gun and is sized for the recommended 2-tubes-per-4'×8' drywall sheet application rate.
- Damping over Blocking: Unlike high-mass barriers, Green Glue contributes damping to the assembly — reducing vibration by dissipating energy as low-grade heat instead of trying to reflect it.
- Double-Drywall Bundle: Most common and effective usage is a drywall sandwich: Drywall → Green Glue → Drywall. Adds meaningful STC/IIC gains on top of clips, channels, and mass layers.
- Proven & Low-VOC: Water-based, low-odor formula with third-party acoustic data — safe for occupied projects and compatible with common wall and ceiling assemblies.
- Non-Adhesive Reality: Easily mistaken for adhesive, but the compound retains its un-drying texture to keep dissipating vibration long-term — always use structural fasteners to attach the outer drywall layer.
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Noiseproofing Compound — Tube Specifications
- Use
- Between rigid layers (drywall-to-drywall)
- Tube size
- 28 fl-oz
- Composition
- Viscoelastic, water-based, solvent-free, Low-VOC
- Recommended rate
- 2 tubes per 4'×8' drywall sheet (32 sq ft), 3 tubes max
- Coverage
- 16 sq ft per tube at the standard rate
- Cleanup
- Soap & water before curing; scrape after cured
- Cure time
- Full acoustic performance after ~30 days
- Note
- Not an adhesive — fasten drywall with screws
Noiseproofing Compound — Tube Project Calculator
Enter your surface square footage — we'll report how many tubes of Green Glue you need for this page's packaging (each 28-oz tube covers 16 sq ft (2 tubes per 4×8 drywall sheet)), plus a recommended mix using our 5-gal bucket, 12-tube box, and single tube.
Green Glue is dosed at 2 tubes per 4'×8' drywall sheet (16 sq ft per tube). Add 10% for cuts, patches, and touch-ups. Buckets are shown as an equivalent — 1 bucket ≈ 23 tubes / 366 sq ft.
Estimated STC Gauge
Compare how the Noiseproofing Compound — Tube performs across assembly tiers. Select an assembly below to see the estimated STC score.
Single 5/8" drywall each side, no insulation, no damping.
Estimated STC — Planning use only
This value is an approximate assembly projection, not a project-specific assessment, certified laboratory test result or performance guarantee. Actual performance varies with the complete assembly, installation, flanking paths, penetrations and site conditions.
- STC 30-39: Loud speech clearly audible next room.
- STC 40-49: Loud speech muffled — normal residential wall.
- STC 50-59: Loud speech barely audible; suitable for offices & multi-family.
- STC 60+: Approaches studio-grade isolation.
How Noiseproofing Compound — Tube compares
| Model | Packaging | Volume | Coverage | Best For | Notes |
|---|---|---|---|---|---|
| Single Tubethis | 1 × 28-oz tube | 28 fl-oz | 16 sq ft (0.5 sheet) | Touch-ups, small runs | Fits standard bulk caulk gun |
| Box of 12 | 12 × 28-oz tubes | 336 fl-oz | ~192 sq ft (~6 sheets) | Room-sized retrofits | Lower per-tube cost |
| 5-Gal Bucket | 5-gal pail | 640 fl-oz (≈ 22.9 tubes) | ~366 sq ft (~11 sheets) | Large runs, tight retrofits | Needs follower plate + bulk gun |
Applicable Assemblies
See where the Noiseproofing Compound — Tube fits — from budget baseline to studio-grade isolation.
Best — Drywall + Studs + Insulation + Clips & Channels + MLV + Drywall + Green Glue + Drywall
Drywall · 2×4 framing · Rockwool insulation · Isolation Clips & Channels · 1 LB MLV · 5/8" drywall · Green Glue · 5/8" drywall.
Better — Drywall + Studs + Insulation + Clips & Channels + Drywall + Green Glue + Drywall
Drywall · 2×4 framing · Rockwool insulation · Isolation Clips & Channels · 5/8" drywall · Green Glue · 5/8" drywall.
Good — Drywall + Studs + Insulation + Clips & Channels + Drywall
Drywall · 2×4 framing · Rockwool insulation · Isolation Clips & Channels · single 5/8" drywall.
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