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Knight MFI® System Rainscreen Attachment

BETTER INSULATION EFFICIENCY OVER ANY OTHER BRACKET SYSTEM OR FURRING CHANNELS ON THE MARKET! COMPARE WALL ASSEMBLIES:

 

  • Base wall assembly: 4″ mineral fiber insulation: R-4.2/in, A/W barrier, exterior gypsum board, empty steel stud cavity (16” O.C.) and interior gypsum board:
    Nominal R-value of 20.
  • Add continuous vertical Z furring strips (at each stud) for cladding attachment:
    Effective R-value = 10.2 (U-value = 0.098)
  • Add continuous horizontal Z furring strips (at 24″ O.C.) for cladding attachment:
    Effective R-value = 12.1 (U-value = 0.083)
  • Add discontinuous aluminum brackets (at 24″ O.C.) for cladding attachment:
    Effective R-value = 13.9 (U-value = 0.072)
  • Add KNIGHT’S MFI® System (4″ brackets at 24″ O.C.) for cladding attachment:
    Effective R-value = 17.2 (U-value = 0.058)
  • Add KNIGHT’S MFI® System with only 3.5 inches of mineral fiber insulation in place of 4.0 inches (brackets at 24″ O.C.):
    Effective R-value = 15.7 (U-value = 0.0637)
  • ASHRAE 90.1 MINIMUM PRESCRIPTIVE REQUIREMENTS FOR STEEL FRAMED WALLS:
    Effective R-value = 15.6 ft²·°F·hr/Btu (U-value = 0.064 in climate zones 4-8)

 

Knight’s MFI® System can be supplied with stainless steel wall anchors*, project specific engineering and Knight’s limited warranty.

 

ADVANTAGES TO THE MFI® SYSTEM RAIN SCREEN:

  • Rails may be attached to ThermaBracket™ in a vertical or horizontal orientation
  • High corrosive-resistant Zn-Al-Mg ZM40 coating for a long service life vs. typical G90 Galvanized steel
  • ThermaStop™ assembly arrives onsite attached to ThermaBracket – No pre-assembly required
  • Exterior insulation fits tight around ThermaBrackets without trimming
  • Attach nearly any cladding with easy and efficient installation and detailing
  • Minimal thermal bridging
  • Accommodates up to 6″ of outboard insulation
  • Faster installation: Built-in adjustability easily plumbs old and new walls equating to labor cost-savings
  • Pre-engineered and tested (substrate connection detailed per project)
  • Ideal for renovations
  • Extremely cost competitive compared to typical means of exterior insulation
Knight Wall Systems’ MFI® System rain screen provides room for up to 6” of insulation on the exterior of the wall. Combined with Knight’s patented ThermaStop thermal isolation system (the only isolation system of it’s kind), it will dramatically increase the effectiveness of the insulation and overall energy efficiency of the building. This is achieved due to the minimal thermal bridging introduced by the metal brackets penetrating the insulation, thereby slowing heat loss (or gain) through the wall assembly, without sacrificing the structural integrity of the attachment system.

The MFI System is available in two iterations: S-Series and D-Series. Both systems offer the same versatility and thermal performance!

 

S-SERIES:

  • S-Rail may be attached to ThermaBracket-S in a vertical or horizontal orientation
  • Rain screen cavity created by vented S-Rail (28% open) and uninterrupted by obstructions: 3/4″
  • Additional layer of rails may be attached to the S-Rail for freedom of layout independent of stud layout or expanded panel compatibility (see typical details and specifications)
  • S: Static – the S-Rail to ThermaBracket connection is fixed with about 1/8″ built-in adjustability
  • Adjustments made on an out-of-plumb or out-of-plane substrates are made by Knight’s supplied isolator shim without sacrificing thermal performance
  • Isolator shim fits square, straight and flat to the back of the ThermaStop system by means of raised lips that securely lock the shim in-place for maximum structural integrity
  • Knight’s isolator shim is included with every S-Series MFI System shipped

 

D-SERIES:

  • D-Rail may be attached to ThermaBracket-D in a vertical or horizontal orientation
  • Rain screen cavity created by vented D-Rail (27% open) and uninterrupted by obstructions: 1.5″
  • Additional layer of rails may be attached to the D-Rail for freedom of layout independent of stud layout or expanded panel compatibility (see typical details and specifications)
  • D: Dynamic – the D-Rail to ThermaBracket-D connection has built in adjustability of 7/8″ for a quick, simple and precise installation
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