Frequently asked questions about DragonBoard, installation, certifications, and specifications.
CONTACT USDragonBoard™ USA offers magnesium oxide (MgO) panels for structural subflooring and floor underlayment in multifamily, hospitality, senior living and commercial construction. Designed for use with cold-formed steel (CFS) and wood framing, the panels are a dry installation alternative to traditional poured gypsum floor systems, with no curing time.
There are three panels:
Typical applications include:
It comes down to your framing, your span and your fire-rating requirement:
Send us your plans or a takeoff and we will confirm the right panel and UL design for your framing and rating.
InfernoBloc is a 1/2” MgO underlayment panel (measuring 4’ x 8’) for use over plywood or OSB subfloors. It achieves one-hour fire-resistance-rated floor assemblies without poured gypsum underlayment (UL L587, No. 27). The lightweight, dry installation system eliminates curing time, simplifies scheduling and provides a stable, cost-effective substrate for a wide range of finished flooring materials.
No. InfernoBloc is an underlayment, installed directly over plywood, OSB or MgO subflooring. For a structural subfloor on steel or wood framing, choose DragonBoard Structural Subfloor or MAG X-24.
Fire ratings apply only within the referenced UL design. Confirm current listings at UL Product iQ and with the designer of record and AHJ.
MAG X-24 is an 18 mm structural MgO subfloor product with engineering data for framing spaced at 16”, 19.2”, and 24” o.c. Values for 19.2” and 24” o.c., are currently identified as preliminary engineering values under Intertek Report No. 250218008SHF-002. Allowable spans depend on project loads, framing conditions, and applicable approvals. Consult DragonBoard technical documentation and the project engineer before specifying.
At 16” o.c., board capacity is 393 psf at L/240 and 257 psf at L/360. These are ultimate capacities, not reduced by safety factors, based on NTA testing to ASTM C1185, Section 5.
Yes. Structural Subfloor installs directly to steel or wood framing, and MAG X-24 installs over wood or steel trusses and joists. Use UL G575 for CFS assemblies and UL L583 for wood.
All panels are 48” x 96” (4’ x 8’). Structural Subfloor and MAG X-24 have a square edge on the 4’ side and a shiplap edge on the 8’ side. InfernoBloc has a square edge on all four sides.
No. All three panels can be installed using standard tools: a circular saw with a carbide-tip blade and a screw gun. The panels measure 4' × 8', with a shiplap edge along the 8' side.
Structural Subfloor and MAG X-24 install directly to the framing, while InfernoBloc installs over plywood, OSB or MgO subflooring. Use #8 screws (refer to the Installation Guide for specifications), with Grabber CGH8185LG fasteners spaced 6” along the edges and 12” in the field.
Panels ship 22 per skid and can be boomed directly to the floor.
For detailed installation instructions, refer to the Installation Guide.
None. Dry installation eliminates poured gypsum and its curing time, and with no separate crews, vendors or delays it helps keep the schedule moving. Without a weather-sensitive pour, hot and cold weather have less impact on scheduling.
A poured system needs a separate pour, a separate crew and vendor, and time to cure, and the pour is sensitive to weather. DragonBoard installs dry, so it cuts trade coordination and removes the cure from the schedule, which lowers overall project costs.
Yes. DragonBoard panels are moisture resistant (ASTM C1185) and mold resistant (ASTM G21), and have been tested for extreme termite resistance. Because the panels are inorganic MgO, they resist termites, carpenter ants and other wood-damaging insects, and they resist mold and fungal growth. They also offer high dimensional stability and surface durability.
No, the panels do not contain asbestos, formaldehyde or VOCs.
Yes.
DragonBoard™ USA offers magnesium oxide (MgO) panels for structural subflooring and floor underlayment in multifamily, hospitality, senior living and commercial construction. Designed for use with cold-formed steel (CFS) and wood framing, the panels are a dry installation alternative to traditional poured gypsum floor systems, with no curing time.
There are three panels:
Typical applications include:
It comes down to your framing, your span and your fire-rating requirement:
Send us your plans or a takeoff and we will confirm the right panel and UL design for your framing and rating.
InfernoBloc is a 1/2” MgO underlayment panel (measuring 4’ x 8’) for use over plywood or OSB subfloors. It achieves one-hour fire-resistance-rated floor assemblies without poured gypsum underlayment (UL L587, No. 27). The lightweight, dry installation system eliminates curing time, simplifies scheduling and provides a stable, cost-effective substrate for a wide range of finished flooring materials.
No. InfernoBloc is an underlayment, installed directly over plywood, OSB or MgO subflooring. For a structural subfloor on steel or wood framing, choose DragonBoard Structural Subfloor or MAG X-24.
Fire ratings apply only within the referenced UL design. Confirm current listings at UL Product iQ and with the designer of record and AHJ.
MAG X-24 is an 18 mm structural MgO subfloor product with engineering data for framing spaced at 16”, 19.2”, and 24” o.c. Values for 19.2” and 24” o.c., are currently identified as preliminary engineering values under Intertek Report No. 250218008SHF-002. Allowable spans depend on project loads, framing conditions, and applicable approvals. Consult DragonBoard technical documentation and the project engineer before specifying.
At 16” o.c., board capacity is 393 psf at L/240 and 257 psf at L/360. These are ultimate capacities, not reduced by safety factors, based on NTA testing to ASTM C1185, Section 5.
Yes. Structural Subfloor installs directly to steel or wood framing, and MAG X-24 installs over wood or steel trusses and joists. Use UL G575 for CFS assemblies and UL L583 for wood.
All panels are 48” x 96” (4’ x 8’). Structural Subfloor and MAG X-24 have a square edge on the 4’ side and a shiplap edge on the 8’ side. InfernoBloc has a square edge on all four sides.
No. All three panels can be installed using standard tools: a circular saw with a carbide-tip blade and a screw gun. The panels measure 4' × 8', with a shiplap edge along the 8' side.
Structural Subfloor and MAG X-24 install directly to the framing, while InfernoBloc installs over plywood, OSB or MgO subflooring. Use #8 screws (refer to the Installation Guide for specifications), with Grabber CGH8185LG fasteners spaced 6” along the edges and 12” in the field.
Panels ship 22 per skid and can be boomed directly to the floor.
For detailed installation instructions, refer to the Installation Guide.
None. Dry installation eliminates poured gypsum and its curing time, and with no separate crews, vendors or delays it helps keep the schedule moving. Without a weather-sensitive pour, hot and cold weather have less impact on scheduling.
A poured system needs a separate pour, a separate crew and vendor, and time to cure, and the pour is sensitive to weather. DragonBoard installs dry, so it cuts trade coordination and removes the cure from the schedule, which lowers overall project costs.
Yes. DragonBoard panels are moisture resistant (ASTM C1185) and mold resistant (ASTM G21), and have been tested for extreme termite resistance. Because the panels are inorganic MgO, they resist termites, carpenter ants and other wood-damaging insects, and they resist mold and fungal growth. They also offer high dimensional stability and surface durability.
No, the panels do not contain asbestos, formaldehyde or VOCs.
Yes.