Megaboard Subfloor

Megaboard Subfloor is a high-performance structural building panel which delivers exceptional performance and value for both steel and wood frame construction.

On steel frame, Megaboard is used in place of a traditional metal deck and gypcrete pour, creating dramatic reductions in construction time, weight and cost.

On wood frame, Megaboard can be used in place of a plywood or OSB deck with gypcrete pour. As well as creating significant reductions in construction weight and cost, Megaboard’s durability and water resistance will contribute significantly to a streamlined building schedule.

Features

Non-Combustible

Non-combustible per IAPMO listings (ASTM E136 – Non-Combustible) for use in fire-rated floor/ceiling assemblies. IBC & IRC approved, with more than 30 UL/ULC listed assemblies up to 2 hours.

Structural Performance

Exceptional span strength for use across a 24” span, along with exceptional diaphragm strength for lateral building rigidity.

Quick & Simple to Install

Can be single trade fitted and remove the need for a gypsum underlayment.

Water, Mold & Insect Resistant

Inorganic cementitious materials will not grow mold (per ASTM G 21 0/0), and ensure zero nutritional value for complete resistance to termites and all wood-boring insects.

Sound Insulating

A unique formulation which can help building designers and contractors achieve critical sound ratings, with the ability to reach 55+ STC/IIC rated floor/ceiling assemblies.

Dimensionally Accurate & Stable

Manufactured to class-leading tolerances for on- and off-site precision. Resistance to water means panels remains structural while wet, and will not delaminate, warp, expand or bow.

Specification

Megaboard’s unique formulation – a high density and quality of cementitious material around a six-layer fiberglass reinforcement mesh – has been developed over more than a decade and tested at labs throughout the US and Canada for class-leading results in everything from fire resistance and sound insulation to shear, deflection and shear diaphragm strength.

¾” structural building panel.
Factory sealed with tongue & groove end.
Worked with regular wood working tools (cuts with a standard carbide tip).
Mechanically fastened directly to steel (screwed) or wood (nailed) framing joists.
Durable, lightweight, silica and toxin free for easy on-site handling.
Covered with ceramic tile (with tile backer), hardwood, vinyl or carpet for finished floor.
Building Code Approvals:
- IAPMO certified and listed, non-combustible for use in all type of non-combustible constructions.
- More than 35 UL/ULC fire-rated assemblies available at 1 hr, 1.5 hrs and 2 hrs
- State of California Approval (Cal-Fire)
- 2021, 2018, and 2015 International Building Code^® (IBC)
- 2021, 2018, and 2015 International Residential Code^® (IRC)
- 2019 California Building Code^® (CBC) and 2019 California Residential Code^® (CRC) – Supplement attached
- 2020 Florida Building Code^® (FBC), Building and Florida Building Code^® (FBC) Residential – Supplement attached

Downloads

Specification Sheet

Please review our Megaboard Subfloor specification sheet to learn how it delivers exceptional performance and compelling value for steel frame, wood frame and modular construction.