Products

Gypsum Underlayments

Commercial Topping

Product Description

New, fast drying Commercial Topping® pours from a featheredge to 3" (76 mm), in new construction or renovation projects. With compressive strengths from 4000 psi (27.4 MPa) to 4500 psi (31 MPa), it's the ideal underlayment to meet ASTM F 710, Preparing Concrete to Receive Resilient Flooring.

Commercial Topping pours over VAT, VCT, terazzo or ceramic, with no shotblasting required. For the ultimate strong, smooth finish over concrete, precast, wood frame, and old cracked lightweight concrete, specify Commercial Topping.

Commercial Topping Techinical Data:

Compressive Strength: Typical range of 4,000 to 4,500 (28 to 31 MPa)
Point Loading: Typical loading of up to 3,500 lbs. on a 1" (1589 kg on a 25.4 mm) diameter disc
Dry Density: 125 lbs./ft.3 (2000 kg/m3)
Weight: At 1/2", less than 5.3 lbs./sq. ft. (At 12.7 mm, less than 25.9 kg/m2)
Flexural Strength: (ASTM C 348) 1660 psi (11.4 MPa) after 28 days
Tensile Strength: (ASTM C 190) 460 psi (3.2 MPa) after 28 days
Surface Burning Characteristics: Flame spread: 0
Fuel contributed: 0
Smoke density: 0
VOC: < 24 mg/m3

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Product Specifications
Fire Ratings / Detail Drawings ( View Hide )

Sound Ratings ( View Hide )

Product Brochure ( Download PDF )

Drying Conditions Sheet ( Download PDF )

Material Safety Data Sheet ( Download Word Doc )