PlastiSpan® Recessed Nailer (RN) insulation applied to the exterior of above-grade wood frame walls is a great way to increase the energy efficiency of that portion of the home. PlastiSpan RN insulating sheathing is manufactured with the long edges routed out to fit a 19 x 64 mm (1” x 3”) nailer for the installation of exterior cladding.

PlastiSpan RN insulation installed over the exterior of wood frame walls increases the effective thermal resistance (/RSIeff Reff) of the total wall assembly because it eliminates thermal bridges due to wood studs (which leave approximately 20% of the wall area without insulation). PlastiSpan RN has recessed edges on the long edges of the board to fit strapping.

Other thicknesses are available upon request to meet the R-value requirements of your project.

The addition of PlastiSpan RN insulation increases the effectrive R-value of a wall assembly by eliminating thermal shorts due to wood studs which leave a large portion of the wall area un-insulated.

  • Meets all building code requirements
  • Available in Type I, II and IX
  • R-values of 3.9/4.2, 4.2/4.6 and 4.4/4.8 per inch respectively
  • Closed cell insulation resists moisture
  • Easy to cut and install
  • Maintains R-value
  • A cost-effective insulation for higher energy efficiency and savings

Material Properties of PlastiSpan® RN Insulation

Material Property Units ASTM C578
XI I VIII II IX XIV
Normal Density pcf
(kg/mJ)
0.75
(12)
1.00
(16)
1.25
(20)
1.50
(24)
2.00
(32)
2.50
(40)
Density
Minimum
pcf
(kg/mJ)
0.70
(12)
0.90
(15)
1.15
(18)
1.35
(22)
1.80
(29)
2.40
(38)
R-Value (RSI)
Minimum per inch
(25.4mm)
75°F
(24°C)
ft2•hr•°F/Btu
(°C•m2/W)
3.1
(0.55)
3.6
(0.63)
3.8
(0.67)
4.0
(0.70)
4.2
(0.74)
4.2
(0.74)
Design R-Value (RSI)
per inch (25.4mm)
thickness
40°F
(4.4°C)
ft2•hr•°F/Btu
(°C•m2/W)
3.4
(0.60)
4.2
(0.73)
4.3
(0.75)
4.6
(0.80)
4.8
(0.84)
4.8
(0.84)
75°F
(24°C)
ft2•hr•°F/Btu
(°C•m2/W)
3.2
(0.57)
3.9
(0.68)
3.9
(0.69)
4.2
(0.73)
4.4
(0.77)
4.4
(0.77)
Compressive Resistance
Minimum @10% deformation
psi
(kPa)
5.0
(35)
10.0
(69)
13.0
(90)
15.0
(104)
25.0
(173)
40.0
(276)
Water Vapor Permeance
Maximum
Perm
(ng/Pa•s•m2)
5.0
(287)
5.0
(287)
3.5
(201)
3.5
(201)
2.5
(143)
2.5
(143)
Flexural Strength
Minimum
psi
(kPa)
10.0
(70)
25.0
(173)
30.0
(208)
35.0
(240)
50.0
(345)
60.0
(414)
Dimensional Stability
Maximum
% linear change 2.0 2.0 2.0 2.0 2.0 2.0
Water Absorption
Maximum
% by volume 4.0 4.0 3.0 3.0 2.0 2.0
Oxygen Index
Minimum
volume % 24 24 24 24 24 24

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