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 3273¹
• 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 emissions²
• 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
• Environmentally friendly, lab tested
• Worldwide patents pending
• Tested in accordance with ASTM D4977, surface abrasion testing; and ASTM D5420, indentation testing

¹ Not recommended for cei Indicates no mold growth in a 4-week controlled laboratory test from the DensArmor Plus components of teh QuietRock panels. The mold resistance of any building product when used in actual job site conditions may not produce the same results as were achieved in the controlled, laboratory setting. No material can be considered mold proof. When properly used with good design, handling and construction practices, QuietRock 528 provides increased mold resitance compared to standard paper-faced wallboard products.

² Components of the panel and polymer have low indoor air emissions.  

• 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.

Staggered Wood Stud Double Steel Stud Double Wood Stud Steel Stud Single Wood Stud • QuietRock on one side • 2x4 wood studs spaced 12” OC on 6” plates with 3-1/2“ minimum batt insulation • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 57 UL, 1 hour U386, W317 est. 5/8” 6-3/4” • QuietRock on both sides • 2x4 wood studs spaced 12” OC on 6” plates with 3-1/2“ minimum batt insulation STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 61 UL, 1½ hour U385, W318 est. 5/8” 6-3/4” • QuietRock over 5/8” Type X on one side • 2x4 wood studs spaced 12” OC on 6” plates with 3-1/2“ minimum batt insulation • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 60 UL, 1 hour U386, W317 est. 5/8” 7-3/8” • QuietRock on one side • 3-5/8” 25-ga. steel studs spaced 24” OC, 1” min air gap with 3-1/2“ batt insulation • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 65 UL, 1 hour V463, W459 est. 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 STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 66 UL, 1 hour V463, W459 est. 5/8” 9-1/4” • QuietRock on one side • 2x4 wood studs spaced 24” OC, 1” min. air gap with 3-1/2“ batt insulation on both sides • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 63 UL, 1 hour U386, W317 est. 5/8” 9-1/4” • QuietRock on both sides • 2x4 wood studs spaced 24” OC, 1” min. air gap with 3-1/2“ batt insulation on both sides STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 65 UL, 1½ hour U385, W318 est. 5/8” 9-1/4” • QuietRock on one side • 2x4 wood studs spaced 24” OC, 1” min. air gap with 3-1/2“ batt insulation on both sides • 2 layers 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 71 UL, 1 hour U386, W317 est. 5/8” 10-1/2” • Double layer QuietRock on both sides • 2x4 wood studs spaced 24” OC, 1” min. air gap with 3-1/2“ batt insulation on both sides STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 73 UL, 1½ hour U385, W318 est. 5/8” 10-1/2” • 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 Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 56 UL, 1 hour V463, W459 TL07-027 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 Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 58 UL, 1 hour V463, W459 TL07-026 5/8” 4-7/8” • 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 • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 60 UL, 1 hour V463, W459 est. 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 Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 63 UL, 1 hour V463, W459 est. 5/8” 6-1/8” • QuietRock on one side • 2x4 wood studs spaced 24” OC with 3-1/2" batt insulation • 5/8” Type X on the other STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 50 UL, 1 hour U386, W317 TL07-017 5/8” 4-3/4” • QuietRock on both sides • 2x4 wood studs spaced 24” OC with 3-1/2“ batt insulation STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 54 UL, 1½ hour U385, W318 TL07-018 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 Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 50 UL, 1 hour U386, W317 est. 5/8” 5-3/8” • QuietRock over 5/8” Type X on one side • 2x4 wood studs spaced 24” OC with 3-1/2" batt insulation • 2 layers 5/8” Type X on the other   STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 52 UL, 1 hour U386, W317 est. 5/8” 6” • QuietRock over 5/8” Type X on both sides • 2x4 wood studs spaced 24” OC with 3-1/2" batt insulation   STC Fire UL/ULC Design # STC Report # Panel Thickness Assembly Thickness 57 UL, 1 hour U385, W318 est. 5/8” 6”