Higher Performance, Higher Reliability, Lower Cost Soundproofing Solutions

QuietRock 528

Paperless, mold-resistant sound damping drywall. Perfect where drywall is exposed to moisture during construction or occupancy.

QuietRock^® DensArmor Plus^® 528 provides the simplest, lowest-cost, most reliable way to combine top-notch noise reduction, mold resistance, abuse resistance and low indoor air emissions in a UL-classified panel. Other assemblies would require additional materials and labor to approach its performance.

QuietRock DensArmor Plus 528 is designed in a cooperative effort with Georgia-Pacific Gypsum. A single sheet of QuietRock DensArmor Plus 528 on one side of single studs provides a fire-rated, highly mold-resistant assembly that meets building code for party walls.

QuietRock DensArmor Plus 528 Benefits

• Superior performance at lower total installed cost than other sound damping assemblies
• STC ratings of 50-58
• 5/8” thick, UL-classified and ULC-listed
• Fiberglass mat facings and a specially treated gypsum core, provide mold resistance per ASTM D 3273
• Abuse-resistant when tested in accordance with ASTM C 1629
• Fiberglass mat gypsum panels are manufactured to meet applicable sections of ASTM C 630, ASTM C 1396, ASTM C 1177, ASTM C 1629, ASTM C 1658, CSA-A82.27.M
• Low indoor air emissions
• Tapered edges; hangs and finishes similar to standard drywall
• Outperforms other sound damping methods, including soundboard and resilient channel
• Back is fiberglass-faced and square edge, suitable for tile with a proper vapor barrier in place
• Helps keep projects on schedule, saving money
• Worldwide patents pending
• Tested in accordance with ASTM D4977, surface abrasion testing; and ASTM D5420, indentation testing

• Documents
• UL/ULC Assemblies
• Assembly Guide

General Data   QuietRock 528 Datasheet   QuietRock 528 Installation Instructions - English   QuietRock 528 Installation Instructions - Spanish   Test Reports   STC 54, 528 on both sides of wood studs   STC 50, 528 on 1 side of single wood studs   STC 56, 528 on 1 side of single steel studs   STC 58, 528 on both sides of single steel studs   QuietRock 528 - Abrasion, Indentation, and Impact Tests

UL QuietRock 528 panel for use in Design Nos. L591, U385, U386, V463. ULC QuietRock 528 panels for use in Design Nos. W317, W318 and W459.

Single Wood Stud Staggered Wood Stud Double Wood Stud Light Gauge Steel Stud Heavy Gauge Steel Stud Double Steel Stud • QuietRock on one side • 2x4 wood studs spaced 24” OC with 3-1/2" batt insulation • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 50 TL07-017 UL, 1 hour U386, W317 5/8” 4-3/4” • QuietRock on both sides • 2x4 wood studs spaced 24” OC with 3-1/2“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 54 TL07-018 UL, 1½ hour U385, W318 5/8” 4-3/4” • QuietRock over 5/8” Type X on one side • 2x4 wood studs spaced 24” OC with 3-1/2“ batt insulation • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 49 est. UL, 1 hour U386, W317 5/8” 5-3/8” • QuietRock on one side • 2x4 wood studs spaced 8” OC on 6” plates with 6“ minimum batt insulation • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 57 est. UL, 1 hour U386, W317 5/8” 6-3/4” • QuietRock on one side • 2x4 wood studs spaced 8” OC on 6” plates with 6“ batt insulation • 2 layers Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 59 est. UL, 1 1/2 hour U386, W317 W318 5/8” 7-3/8” • QuietRock on both sides • 2x4 wood studs spaced 24” OC, 3” min. air gap with 9-1/2“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 65 est. UL, 1½ hour U385, W318 5/8” 11-1/4” • Double layer QuietRock on both sides • 2x4 wood studs spaced 24” OC, 3” min. air gap with 9-1/2“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 73 est. UL, 1½ hour U385, W318 5/8” 12-1/2” • QuietRock on one side • 3-5/8” 25-ga. steel studs spaced 24” OC with 3-1/2“ batt insulation • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 56 TL07-027 UL, 1 hour V463, W459 5/8” 4-7/8” • QuietRock on both sides • 3-5/8” 25-ga. steel studs spaced 24” OC with 3-1/2“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 58 TL07-026 UL, 1 hour V463, W459 5/8” 4-7/8” • QuietRock on one side • 3-5/8” 25-ga. steel studs spaced 24” OC with 3-1/2“ batt insulation • 2 layers 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 61 est. UL, 1 hour V463, W459 5/8” 5-1/2” • 5/8” Type X over QuietRock on one side • 3-5/8” 25-ga. steel studs spaced 24” OC with 3-1/2“ batt insulation • 2 layers 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 63 est. UL, 1 hour V463, W459 5/8” 6-1/8” • QuietRock on both sides • 3-5/8” 16-ga. steel studs spaced 16” OC with 3-1/2“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 48 est. UL, 1 hour V463,W459 5/8” 4-7/8” • QuietRock on one side • 6” 16-ga. steel studs spaced 16” OC with 6“ batt insulation • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 49 est. UL, 1 hour V463,W459 5/8” 7-1/4” • QuietRock on both sides • 6” 16-ga. steel studs spaced 16” OC with 6“ batt insulation STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 53 est. UL, 1 hour V463,W459 5/8” 7-1/4” • QuietRock on one side • 3-5/8” 25-ga. steel studs spaced 24” OC, 1” min air gap with 3-1/2“ batt insulation both sides • 5/8” Type X on the other STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 65 est. UL, 1 hour W460, V463, W459, V464 5/8” 9-1/4” • QuietRock on both sides • 3-5/8” 25-ga. steel studs spaced 24” OC, 1” min air gap with 3-1/2“ batt insulation both sides STC STC Report # Fire UL/ULC Design # Panel Thickness Assembly Thickness 66 est. UL, 1 hour W460, V463, W459, V464 5/8” 9-1/4”