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Flute Filler





Flute Filler acts as the void fill material designed to be installed over
pre-existing metal roofs providing a uniform and level substrate for the
new roof system. PlastiSpan Insulation is a moulded expanded polystyrene
(EPS) insulation.

• Meets all building code requirements
• Meets CAN/ULC-S701, Type 1
• Thermal resistance - RSI 0.65/25 mm (R-value 3.75/inch)
• Closed cell insulation resists moisture
• CCMC 12424-L
Custom thicknesses & sizing available

EPS used in flute filler applications is a closed cell, rigid foam plastic
insulation that does not contain a blowing agent that provides a temporary
increase in thermal resistance.

By using Plastispan insulation in your roof assemblies, you increase your total
effective RSI/R-value. This reduces energy costs and increases your energy
savings.

PlastiSpan Flute Filler can be custom cut to match the profile of the metal
flutes on your building. Flute Filler strips are easy to install and provide the
necessary support under the roofing membrane.
Product Selections for this application:
PlastiSpan Plastispan HD

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Material Property Test Method Units Property Values
Thermal Resistance
Minimum RSI per 25mm (R per inch)
ASTM
C518
m20C/W
(ft2•h•0F/BTU)
0.65
(3.75)
Compressive Resistance
Minimum @ 10% Deformation
ASTM
D1621
kPa
(psi)
70
(10)
Flexural Strength
Minimum
ASTM
C203
kPa
(psi)
170
(25)
Water Vapour Permeance2
Maximum
ASTM
E96
ng/(Pa.s.m2)
(Perms)
300
(5.0)
Water Absorption3
Maximum
ASTM
D2842
% By volume 6.0
Dimensional Stability
Maximum, 7 Days @ 70± 2℃ (158±40F)

ASTM
D2126
% Linear Change 1.5
Limiting Oxygen Index
Minimum
ASTM
D2863
% 24
Thermal Resistance for Some Common Thicknesses
Millimeters RSI Inches R-value
19 0.49 3/4" 2.81
25 0.65 1" 3.75
38 0.98 1 1/2" 5.63
50 1.30 2" 7.50
75 1.95 3" 11.25
THICKNESSES AS REQUIRED ARE AVAILABLE