GenieMat RST is a high-performance, resilient sound control underlayment engineered for direct installation beneath hard surface floor finishes. Manufactured from 94% recycled rubber, it provides superior impact sound insulation in multi-family housing, high-rises, and commercial buildings.

Developed from patented recycled rubber technology (US 6920723, US RE41945, CA 2398262), GenieMat RST reduces impact noise transmission while protecting ceramic tile, porcelain, stone, wood, and vinyl flooring from substrate cracks.

Designed for direct-adhered floor coverings, GenieMat RST offers long-term durability, crack isolation performance, and industry-leading acoustic results across concrete, wood, and steel construction assemblies.

Minimum Order: 16

Available Thickness & Roll Sizes

 

Features & Benefits

• Manufactured with 94% recycled rubber content

• Superior impact sound insulation performance
  

• Mold, bacteria, fungi, and water resistant
  

• Exceeds ANSI 118.12 crack isolation membrane requirements
  

• Meets VOC emissions standards (ASTM D5116)
  

• Qualifies for LEED points
  

• Floorscore certified
  

• Positive adhesive lock for very high bond strength
  

Performance Highlights

Impact Sound Reduction (ASTM E2179)
Installed beneath ceramic tile over concrete slabs, GenieMat RST delivers up to:

• 23 dB impact sound reduction (RST12 ½”)
  

• 21 dB (RST10 3/8”)
  

• 19 dB (RST05 3/16”)
  

Rubber remains the most effective vibration isolation material, making GenieMat RST a top-tier choice for demanding acoustic assemblies.

Acoustical Ratings

Wood Structures

Test Report	Product	Finish Floor	Structure	STC	IIC
F4832.18	2mm (4’ x 75)	Porcelain Tile	Engineered Joist	59	55
F5500.03	2mm (4’ x 75)	Vinyl Plank	Engineered Joist	61	60
F4832.14	2mm (4’ x 75)	Wood	Engineered Joist	58	61
F2761.08	2mm (4’ x 75)	Wood	CLT	54	50
5013143	2mm (4’ x 75)	Vinyl Plank	2x10 Solid Wood Joist	55	50
5013136	2mm (4’ x 75)	Ceramic Tile	2x10 Solid Wood Joist	58	52
E5958.07	5mm (4’ x 30’)	Vinyl Plank	CLT	58	58

Concrete and Steel Structures

Test Report	Product	Finish Floor	Structure	STC	IIC
G9222.04	2mm (4’ x 75)	Vinyl Plank	8" Concrete Slab	54	57
G3991.17	2mm (4’ x 75)	Wood	1/2" Trapezoidal Steel Deck	53	52
F5689.07	2mm (4’ x 75)	Vinyl Plank	4" Trapezoidal Steel Deck	54	54
F5689.20	2mm (4’ x 75)	Vinyl Plank	10" Steel Joist	60	52
F5689.21	2mm (4’ x 75)	Wood	10" Steel Joist	60	53
E8741.01	5mm (4’ x 30’)	Ceramic Tile	8" Concrete Slab	57	55
F8530.06	5mm (4’ x 30’)	Wood	8" Concrete Slab	55	56
E2783.02	5mm (4’ x 30’)	Porcelain Tile	6" Concrete Slab	54	50
G2953.07	5mm (4’ x 30’)	Wood	6" Concrete Slab	52	53
F0223.04	5mm (4’ x 30’)	Vinyl Plank	8" Hollow Core Plank	53	52
G3991.07	5mm (4’ x 30’)	Porcelain Tile	1/2" Trapezoidal Steel Deck	56	51
F9365.02	5mm (4’ x 30’)	Porcelain Tile	4" Trapezoidal Steel Deck	58	51
F5689.06	5mm (4’ x 30’)	Wood	4" Trapezoidal Steel Deck	55	54
F3052.14	5mm (4’ x 30’)	Wood	16" ICF	54	53
F3052.15	10mm (4’ x 15’)	Porcelain Tile	16" ICF	56	51