4" BuildBuck Panel - 76'/bundle

  • SKU:  00BK400

Sold in Units of 19

BuildBuck ICF Door & Window Bucking brings the insulation properties of EPS foam together with embedded plastic webs to create a strong seamless transition from ICF walls to door and window openings.

BuildBuck ICF Door & Window Bucking is an integrated ICF bucking solution for residential & commercial projects. Providing continuous insulation along the full length of the buck, BuildBuck is two-inches thick providing an insulated barrier for all openings. The buck features three primary attachment areas across the face of the buck every 6-inches in the center and on each side as well as full-length attachment on each side. Foam guides properly align BuildBuck and the ICF blocks. A molded-in sealing member works with flashing to seal against moisture intrusion. The full length molded tape measure and cut lines makes cutting the buck to size simple and straightforward.

BuildBuck Product Features

  • Standard BuildBlock labor-saving benefits are included such as molded-in tape measure and cut lines.
  • Indicators for attachment points and cut lines for access ports are molded-in.
  • Molded alignment guides align the buck inside the the ICF block.
  • Full-length attachment points along each side of the buck and 8 attachment zones across the face of the buck are spaced evenly every 6-inches.
  • Integrated sealing member molded in to prevent water intrusion behind flashing.
  • BuildBuck has 8 anchors that mechanically securely connect the buck to the concrete.
  • BuildBuck is 2” thick and 52” long (48” nominal) and the longest ICF buck on the market creating a 4040 rough opening without cutting.
  • Packaged in small bundles for easy ordering and fits above block bundles on trucks to eliminate most shipping.
  • BuildBuck is available for all 6-inch & 8-inch forms.

BuildBuck Advantages

  • Designed specifically for BuildBlock, BuildLock, and GlobalBlock ICF forms.
  • Strong I-Beam web design mechanically anchored into concrete and foam.
  • Full length attachment across both sides of the buck for easy attachment of finishes.
  • Seven (7) full size (3”x 1.5”) attachment points on the face of the buck spaced every 6 inches and 2 half-size on each end.
  • Webs molded 1/2 inch below EPS foam to prevent thermal bridging and create seamless transition from wall to opening.
  • Numbered cut lines on each side of the buck for straightforward measuring and cutting.
  • Designed to easily allow 8” horizontal rebar spacing in large commercial projects.

BK-400 Specifications

Specification Imperial Metric
Product ID BK-400 BK-400
Length 52 in 1320.8 mm 
Nominal Length 48 in 1219.2 mm
Width 9 in 228.6 mm
Thickness 2 in 50.8 mm
Weight 4 lbs. 1.81 kg
Concrete Volume N/A N/A
Surface Area 3.82 ft2 .3550 m2
R-value 8.4 8.4
EPS Foam Density 1.8 lbs./cu.ft.

28.83 kg/m3

EPS Foam Depth

2" 2.54 cm
Compatible Forms BB-400
BL-400
GB-400
BB-400
BL-400
GB-400

Bundle Specifications

Specification Imperial Metric
Bundle Dimensions 47.5" x 52.5" x 11.5" 120.65 cm x 133.35 cm x 29.21 cm
Bundle Length 47.5" 120.65 cm
Bundle Width 52.5 133.35 cm
Bundle Height 11.5" 29.21 cm
Bundle Weight    

Quantity Per Bundle

18 18

Energy Efficiency Specifications

Specification  
Actual R-Value 4.4 Per inch of EPS Foam
Effective R-Value R-24 to R-50
K-Factor .24 Per inch of EPS Foam
Steady State R-Value R-21 Foam Value
U-Value U-0.048
Water Absorption Less than 3% (ASTM C272)
Water Vapor 0.56 perms per 2.5"

Safety Specifications

Specification  
Concrete Compressive Strength (psi) 3,000
Concrete Pour Temperature Range Down to 0°F (-18°C)
Firewall Rating 5,000 to 12,000 lbs per lineal foot for 3 hours.
Sound Class 1-sided STC Sound Class rating of 51 with 1/2-inch sheetrock on one side.
Sound Class 2-sided STC Sound Class rating of 54 with 1/2-inch sheetrock on both sides.

 

General Specifications

SPECIFICATION Imperial Metric
Expanded Polystyrene density 1.5 lbs./cu.ft. 24.02769 kg/m3
Average thickness of EPS 2½” per panel (5” total) 12.7cm (6.35cm per panel)
Material R-value R-22 Foam Value R-22 Foam Value
Performance R-value
(concrete, form R-value, air infiltration reduction, and thermal mass)
R-30 to R-52 R-30 to R-52
U 0.33 to U 0.02
Actual R-value per inch of EPS Foam 4.2/inch  
Thermal Mass (form & concrete) 4” Core: 47.5 lbs./ft2
6” Core: 72 lbs/ft2
8” Core: 96 lbs/ft2
10” Core: 119 lbs/ft2
12” Core: 143 lbs/ ft2
4” Core: 231.9 kg/m2
6” Core: 351.5 kg/m2
8” Core: 468.7 kg/m2
10” Core: 581.0 kg/m2
12” Core: 698.2 kg/m2
K-Factor .24/inch  
Water absorption - 3% (ASMC272) - 3% (ASMC272)
Water vapor 0.56 perms per 2½” Panel 0.84 metric perms per 2½” Panel
Sound class 52 with ½” sheet rock on inside 52 with ½” sheet rock on inside
Fire wall 3 Hour Fire Rating on BB-600 Wall (Loading 5,000 lb. per lineal feet throughout test.)
(Post test loading 12,000 lbs. per lineal foot with no additional depletion.)
3 Hour Fire Rating on BB-600 Wall (Loading 7440.6 kg/m throughout test.)
(Post test loading 17857.9 kg/m with no additional depletion.)
Concrete compressive strength Recommended 3000 psi minimum Recommended 20 MPa minimum
Recommended concrete pouring temperature* 15°F to 120°F* (-9°C to 49°C)*
*Properly handled, specially formulated concrete can be poured at temperatures as low as -15ºF (-26ºC). Consult your ready mix company. Important: At temperatures below freezing, you must cover all exposed concrete with insulating material.

ASTM Standards Product Testing

BuildBlock ICFs are evaluated to ensure they meet or exceed a variety of industry standards tests. Visit http://buildblock.com/technical-support/product-testing/ for more information.

Properties ASTM TEST RANGE REQUIRED TEST VALUE
Density ASTM D1622 1.5lb/ft³ 1.69lb/ft²
Thermal Resistance ASTM C177 4.0F.ft².h/Btu/in 4.08F.ft².h/Btu/in
Compressive Strength ASTM D1621 15.0 psi 23.1 psi
Flexural Strength ASTM C203 40.0 psi 50.4 psi
Flame Spread ASTM E84 25 Maximum >25
Smoke Developed ASTM E84 450 Maximum >450
Fire Wall Rating ASTM E119   3hr
R-Value ASTM C518 R-22 R-22
STC Rating ASTM E413 STC 50 STC 50
Vapor Permanence ASTM E96 3.5 perms/inch Maximum 2.04 perms/inch

Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

Specification Reference: ASTM C 578-92 Type I Type VIII Type II Type IX
Property   Units ASTM Test        
Density, minimum   (pcf) D 303 or D 1622 0.90 1.15 1.35 1.80
Density Ranger   (pcf) C 177 or C 518 0.90-1.14 1.15-1.34 1.35-1.79 1.80-2.20
Thermal Conductivity           
K Factor                              

at 25 F
at 40 F
at 75 F

BTU/(hr.)
(sq.ft.)(F/in.)
  0.23
0.24
0.26
.22
.235
.255
.21
.22
.24
.20
.21
.23
Thermal Resistance at 25 F
at 40 F
at 75 F
at 1 inch thickness   4.35
4.17
3.85
4.54
4.25
3.92
4.76
4.55
4.17
5.00
4.76
4.35
Strength Properties
Compressive 10% Deformation
Flexural
Tensile
Shear
Shear Modulus
Modulus of Elasticity
  psi
psi
psi
psi
psi
psi
D 1621
C 203
D 1623
D 723
_____
_____
10-14
25-30
16-20
18-22
280-320
180-220
13-18
30-38
17-21
23-25
370-410
250-310
15-21
40-50
18-22
26-38
460-500
320-360
25-33
50-75
23-27
33-27
600-640
460-500
Moisture Resistance
WVT
Absorption (vol.)
Capillarity
  perm. in
%
––––
  2.0-5.0
less than 4.0
none
1.5-3.5
less than 3.0
none
1.0-3.5
less than 3.0
none
0.6-2.0
less than 3.0
none
Coefficient of Thermal Expansion   in./(in.)(F) D696 0.000035 0.000035 0.000035 0.000035
Maximum Service Temperature
Long-term Exposure
Intermittent Exposure
      167
180
167
180
167
180
167
180
Oxygen Index   % D 2863 24.0 24.0 24.0 24.0

Please use the BuildBlock ICF installation resources mentioned below to build the safest and most successful ICF projects possible. More information can be found on our mail website at http://buildblock.com. Please also visit our Youtube Channel at https://youtube.com/buildblock for product videos, installation videos, project tours, howto videos and more.

Installation Brochures & Quick Start Guides

BuildBlock Product Installation Manuals

The table below provides a link to the BuildBlock Product Installation Manual. The manual is freely downloadable and a hard copy is available for purchase here in the store. Please read this manual to fully understand how to properly install BuildBlock ICFs. If you have any questions, more information can be found on our website at http://buildblock.com/technical-support or by contacting your sales representative or our technical department at 866-222-2575. Our goal is for you to build successful ICF projects that will last for generations. Our motto is Build it once, Build it for life.

Section Content Revised Download
Section 1 BuildBlock Installation & Technical Manual 10/2015 (8 MB)
  BuildBlock Installation & Technical Manual (High Resolution) 10/2015 (71 MB)
Section 2 GlobalBlock Installation & Technical Manual 9/2015 (13 MB)
Section 3 BuildDeck Roof & Floor Decking System Design, Engineering, and Installation Manual 1/2011 (5 MB)
Section 4 BuildBlock Hardwall Installation Manual 12/2015 (11 MB)
Section 5 ThermalSert & ThermalSert KD Manual 7/2014 (4 MB)
Section 6 BuildBrace ICF Bracing & Alignment System Manual 8/2015 (7 MB)
Section 7 BuildBuck ICF Window & Door Bucking Product & Installation Manual 12/2015 (7 MB)
Section 8 BuildShield Termite & Firestop Protection Product & Installation Manual 12/2015 (4 MB)
Section 9 BuildBlock ICF Products & Safe Room Engineering Manual 4/2016   (14 MB)
Section 10 BuildBlock CAD Details 10/2015 (17 MB)
Section 11A Prescriptive Method for Insulating Concrete Forms in Residential Construction, Second Edition 1/2002 (2 MB)
Section 11B Prescriptive Method for Insulating Concrete Forms in Residential Construction, Second Edition Appendix 1/2002   (2 MB)
Section 12 Prescriptive Method for Connecting Structural Insulated Panel Roofs to Concrete Wall Systems 5/2008 (519 kB)
Section 13 BuildBlock 03 11 19 CSI Specifications 10/2015 (55 kB)
(30 kB)
(52 kB)
(80 kB)
Section 14 BuildBlock Code Approvals & Product Testing  7/2015 (5 MB)
Section 15  White Papers and Industry Research (Click here to visit download page)
New research and whitepapers are added to this section regularly.
10/2015  
These files create the most current version of the BuildBlock Technical & Installation Manual Binder.

BuildBlock Installation & Howto Videos