MONOKOTE MK-10 HB Single Component, Spray Applied, Mill-Mixed Fire Resistive Plaster
MONOKOTE® MK-10 HB is a single component, spray applied, mill-mixed fire resistive plaster. It has approval for use on structural steel members and fluted decking to provide up to four hours of fire protection, and on flat plate cellular decking for up to three hours with SPATTERKOTE® SK-3.
This product has been designed to obtain bond strengths in excess of 430 psf making it an attractive material for meeting the IBC building requirements for bond strength for buildings in excess of 75 feet tall but less than 420 feet tall. The capability of meeting the bond strength requirements with a high yielding spray applied fire resistant material makes MONOKOTE® MK-10 HB fire resistive plaster a cost effective option.
Features & Benefits
MONOKOTE® cementitious fireproofing offers many significant advantages to the architect, owner, applicator and building occupant. These include:
- Proven in-place performance
- Low in-place cost
- Fast, efficient application
- UL fire tested and factory inspected
- Building Code compliant
Steel & Concrete Surfaces
- Prior to the application of MONOKOTE® MK-10 HB fire resistive plaster, an inspection shall be made to determine that all steel surfaces are acceptable to receive fireproofing. The steel shall be free of oil, grease, rolling compounds or lubricants, loose mill scale, excess rust, noncompatible primer, lock down agent or any other substance that will impair proper adhesion. Where necessary, the cleaning of steel surfaces to receive fireproofing shall be the responsibility of the general contractor.
- The project architect shall determine if the painted/primed structural steel to receive fireproofing has been tested in accordance with ASTM E119, to provide the required fire resistance rating.
- Many Fire Resistance Designs allow the use of painted metal floor or roof-deck in place of galvanized decking. Painted decking must be UL listed in the specific fire resistance designs and must carry the UL classification marking. Consult your local GCP sales representative for details.
- Prior to application of MONOKOTE® MK-10 HB fire resistive plaster, a bonding agent, approved by the fireproofing manufacturer, shall be applied to all concrete substrates to receive MK-10 HB.
- Prior to application of MONOKOTE® MK-10HB WHITE®, a bonding agent approved by the fireproofing manufacturer shall be applied to all substrates to receive MK-10HB WHITE®. There is one exception to this requirement.
- no bonding agent is required when bond tests run in accordance to the Coatings Materials section of the Underwriters Laboratories Fire Resistance Directory Volume 1, which indicate that a bonding agent is not required for MONOKOTE® MK-10HB WHITE® in conjunction with the specific primed or painted structural steel.
- Fireproofing to the underside of roof deck assemblies shall be done only after roofing application is complete and roof traffic has ceased.
- No fireproofing shall be applied prior to completion of concrete work on steel decking.
- Other trades shall not install ducts, piping, equipment, or other suspended items until the fireproofing is completed and inspected.
- Other trades shall install clips, hangers, support sleeves, and other attachments that penetrate the fireproofing, prior to application of the fireproofing.
Performance Characteristics
PHYSICAL PROPERTIES | RECOMMENDED SPECIFICATION | LABORATORY TEST* VALUES | TEST METHOD |
---|---|---|---|
Dry density, minimum average | 15 pcf (240 kg/m3) | 15 pcf (240 kg/m3) | ASTM E605 |
Bond strength | 600 psf (28.7 KPa) | 970 psf (46.3 KPa) | ASTM E736 |
Compression, 10% deformation | 4,500 psf (215 KPa) | 5,140 psf (245.7 KPa) | ASTM E761 |
Air erosion | Max 0.000 g/ft2 (0.00 g/m2) | 0.000 g/ft2 (0.00 g/m2) | ASTM E859 |
High velocity air erosion | No continued erosion after 4 hours | No continued erosion after 4 hours | ASTM E859 |
Corrosion | Does not contribute to corrosion | Does not contribute to corrosion | ASTM E937 |
Bond impact | No cracking, spalling or delamination | No cracking, spalling or delamination | ASTM E760 |
Deflection | No cracking, spalling or delamination | No cracking, spalling or delamination | ASTM E759 |
Resistance to mold growth | No growth after 28 days | No growth after 28 days | ASTM G21 |
Surface burning characteristics | Flame spread = 0 Smoke developed = 0 |
Flame spread = 0 Smoke developed = 0 |
ASTM E84 |
Combustibility | Less than 5 MJ/m2 total, 20 kw/m2 peak heat release | Less than 5 MJ/m2 total, 20 kw/m2 peak heat release | ASTM E1354 |