Pipewrap
GLT Pipewrap combines a foil-faced 1 lb/ft² MLV barrier with a 1" quilted fiberglass absorber, so a single wrap adds decoupled mass AND absorption around noisy piping, HVAC ducts, valves, and fan housings. Class A fire-rated (ASTM E84 FS 12.5 / SD 19.5), serviceable from -20°F to 350°F, and supplied per square foot in 48"×30' rolls. Installs quickly with bands and Reinforced Foil Seam Tape.
- Engineered Acoustic Wrap: Combines Foil-Faced MLV laminated to 1" quilted insulation for significant airborne-noise reduction on pipes and ducts.
- Measured Performance: STC 29–30 rating adds substantial noise reduction to the overall decoupling assembly.
- Code-Ready Safety: Thermal R-value of 4, service range -20°F to 350°F, ASTM E84 Class A flame and smoke compliance.
- Fast Installation: 48"×30' rolls simply wrap to piping (foil out), leaving a 2" overlap, band, and foil-taped seam.
- Predictable Mass: 1.22 lb/ft² barrier delivers consistent sound blocking without added complexity of multi-layered assembly.
- Broad-Use Cases: Pipes, ducts, valves, fan housings, and mechanical enclosures across residential, multi-family, and commercial spaces.
Online orders up to 500 sq ft. For anything larger, call (415) 864-4440 and we'll price the project with you.
Freight shipments include a $100 freight-and-handling charge.
Pipewrap Specifications
- Composition
- 1 lb/ft² Foil-Faced MLV bonded to 1" quilted fiberglass noise barrier
- Nominal Thickness
- 1"
- Standard Roll Size
- 48" W × 30' L
- Areal Weight
- 1.22 lb/ft²
- Temperature Range
- -20°F to 350°F
- R-Value
- 4.0 (approximate)
- Fire Rating
- ASTM E84 Class A — Flame Spread 12.5, Smoke Developed 19.5
- STC (barrier only)
- 29 (1"), 30 (2")
- Use
- Wrap noisy pipes, ducts, valves, fan housings, and mechanical enclosures
- Install Accessory
- Reinforced Foil Seam Tape (3" × 150')
Pipewrap Project Calculator
Enter the total wrapped run length in linear feet — we'll size the 48"×30' Pipewrap rolls and the Foil Seam Tape rolls needed to seal every seam.
STC Gauge
Compare how the Pipewrap performs across assembly tiers. Select an assembly below to see the resulting STC score.
Standard fiberglass pipe insulation with no barrier layer.
- 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 Pipewrap compares
| Model | Primary Use | Acoustic Role | Strength | Notes |
|---|---|---|---|---|
| Pipewrapthis | Wrapping pipes, ducts, and mechanical enclosures | Adds decoupled mass + absorption | 1.22 lb/ft² + fiberglass core | Class A, -20°F to 350°F service |
| Pipe Insulation Only | Thermal control on piping | Minimal barrier effect | Low mass | No STC rating on its own |
| MLV Wrap (barrier only) | DIY pipe wrap without absorber | Barrier only | 1 lb/ft² | Requires separate insulation layer |
Applicable Assemblies
See where the Pipewrap fits — from budget baseline to studio-grade isolation.
Best — Pipe + 2" Pipewrap + Foil Seam Tape
Two wraps of Pipewrap around loud DWV or supply line, seams sealed with Reinforced Foil Seam Tape.
Better — Pipe + 1" Pipewrap + Foil Seam Tape
Single wrap on standard risers and branches, foil-taped at overlaps and terminations.
Good — Pipe + Pipe Insulation Only
Baseline non-acoustic insulation without a barrier layer.
