The next generation of roofing is here today. The MOS System is a unique water-based substance that is simply mixed at the jobsite and applied with conventional spray equipment. MOS (Magnesium Oxide Slurry) was born out of the need for high wind uplift resistance on lightweight concrete decks in hurricane prone environments.

MOS cementitious fluid, with insulation embedded, provides new sustainability, saves cost, time and labor, ... all the while providing rated protection.
  • Versatility
  • Innate Fire Resistance
  • Extreme Wind Resistance
  • Zero VOC
  • Compatible with Most Insulations, Including Polyisocyanurate, Expanded and Extruded Polystyrene
  • High Compression Strength


Roofing & Waterproofing Contractors

Roofing contractors are raving over the MOS System. This new product is ideal for new roof installations that require a combination of watertight sealing and high wind resistance. Soprema recently formulated the MOS System specifically to withstand the hurricane-force winds experienced in Hawaii, Florida and other Gulf States. However, the versatile product is being embraced by contractors worldwide

MOS (Magnesium Oxide Slurry) is a water-based bonding agent that is easily mixed at the jobsite and can be quickly applied using conventional spray equipment. The MOS System is compatible with numerous insulation materials. MOS dries quickly leaving a hard (yet flexible) surface. This saves contractors costs time and labor while providing additional fire protection.

Fast set-up time, no VOC’s and compatibility with numerous insulation materials make MOS the new choice for forward-thinking contractors.



Architects/Consultants

The MOS System has zero VOC’s, is kind to the environment, offers high wind resistance and durability all in one easy-to-apply system.

Originally developed for membrane adhesion on existing lightweight insulated concrete decks (to withstand hurricane-force winds in Hawaii, Florida and other Gulf States), the MOS System is now being specified by forward-thinking architects worldwide.

Contractors will appreciate your specifying of MOS (Magnesium Oxide Slurry) because it is a water-based product that is simply mixed on the jobsite and applied with conventional spraying systems. They realize timesavings, labor reduction and increased profitability. As importantly, MOS has no fumes or odors, so work is never interrupted and workers have no exposure. The combination of fast set-up times, compatibility with various insulation materials and no VOC’s make MOS a hit for both contractors and building owners alike.

Building owners will appreciate the wind and fire resistant properties that the MOS System offers. Although most owners demand the durability that MOS provides, many are also appreciative the MOS System is also friendly to the environment.





Building Owners

If you are concerned about the quality and durability of the roof on your new building, imagine what building owners in the hurricane belt must be thinking.

They are feeling smart for demanding the MOS System. Soprema has specifically engineered the MOS System for roofs in Hawaii, Florida and other Gulf States that experience hurricane-force winds.

MOS (Magnesium Oxide Slurry) is fire-retardant as well as wind-resistant. Additionally, the MOS System is durable, flexible and easy for the contractors to install. MOS is water-based and contains no VOC’s, which makes it friendly to the environment.

When used in combination with specially developed SBS membranes, the MOS system provides resistance to puncture, wind uplift, and traffic.

Make sure to ask your architect or your Soprema representative about our comprehensive warranty plans for your new roof.


For more information, please click one of these icons: