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BACKER ROD PRODUCTS & PRICING:
Backer Rod By-The-Foot, all types.
Selecting SOFT CELL Backer-Rod:
Select a backer-rod diameter that
is approximately
25-40% larger than the width of the joint. Color may be
light or dark gray, and is
not selectable.
Joint
Width* SOFT
CELL
Backer Rod Size
1/16 - 3/16" use
closed cell -->
1/4"
1/8 - 1/4"
3/8
<-- click link for pricing & specs
5/16 -
1/2" 5/8
7/16 -
3/4" 7/8
5/8 -
7/8"
1-1/8
7/8 -
1-1/4"
1-1/2
1-1/4 -
1-1/2"
2
1-1/4 -
2
2-1/2
1-3/4
- 2-1/2" 3
2-1/4 -
3-1/4"
4
* SOFT backer rod is highly
compressible and can be easily used at widths as low as 50% of
product diameter (lower in small sizes). CLOSED CELL product can be used in all applications
where SOFT is specified.
Selecting
CLOSED CELL Backed Rod:
Select a backer-rod diameter that is approximately
25% larger than the width of the joint. Color may be
medium charcoal OR gray,
and is not selectable.
Joint Width
CLOSED CELL Backer Rod
Size (all)
1/16 - 3/16"
1/4"
<-- click link for
pricing & specs
3/16 - 1/4"
3/8"
1/4 - 3/8"
1/2"
5/16 - 1/2"
5/8"
9/16 - 5/8"
3/4"
1/2 - 3/4"
7/8"
3/4" - 7/8"
1 "
7/8 - 1"
1-1/4"
1 to 1-1/4"
1-1/2"
1-1/8 to 1-1/2"
2"
1-1/2 to 2"
2-1/2"
1-7/8 to 2-1/2"
3"
2-1/2 to 3-1/4"
4"
3 to 4-1/4"
5"
4-1/2 to 5-1/2"
6"
Selecting OPEN
CELL Backed Rod:
Select a backer-rod diameter that is
approximately 25% larger than the width of the joint. Yellow open cell foam is
quite soft.
Joint Width
OPEN CELL
Backer Rod (all)
3/16" -
1/4" 3/8"
<-- click link for
pricing & specs
3/8" -
1/2" 5/8"
1/2" -
3/4" 7/8"
3/4" -
7/8" 1-1/8"
7/8" -
1-1/4" 1-1/2"
1-1/4" -
1-1/2"
2"
Selecting
D-Shaped
Backer Rod 
We now have several sizes
of 1/2 width
D-Shaped
Backer Rod
(= 1/2 of the above yellow rod, Half-Rod) in yellow open foam material.
D-shaped backer rod is ideal for
log-homes and tight-fitting, shallow or V-shaped joints.
7/8" x 1650
feet
<-- click link for
pricing & specs
1-1/8" x 1100
feet
1-1/2" x 500
feet
2" x 400 feet
Applying Backer-Rod:
Backer Rod Insertion Tools
When working on concrete expansion joints, backer rod is used together with
SL1 & SL2
self-leveling sealants.
1. Joint or opening should be clean and dry and free
of all contaminates, loose materials, dry, and free of water or frost.
2. To install, compress backer-rod into the
joint before sealants are applied. Install backer-rod using a blunt tool or a plain faced
roller.
3. Force the rod to the depth recommended by sealant manufacturer, (typically
about 1/2 of joint width measured at the crown of the backer rod). A template or roller gauge may be used to
control the depth at which the rod is placed.
4. Don't stretch,
puncture or tear backer-rod during installation
but gently force into the joint so that the backer-rod
fits tight against the sides of the joint. Use a backer-rod roller or smooth
tool to set backer rod to proper depth.
5.
IMPORTANT NOTE FOR SELF-LEVELING SEALANT APPLICATIONS:
All Backer Rod sides, joints and end areas must be completely sealed against a
joint surface, otherwise Self Leveling sealants WILL run out of any gaps. Use
heavy masking tape on sidewalk edges.
Priming:
1. If joint priming is needed, follow suggestions for joint-sealant
application
as directed by sealant manufacturer.
2. Where necessary, primer
should be applied only to the edges of the joint surface and allowed
to dry before Backer-Rod is placed. DO
NOT prime Backer-Rod.
Applying Sealants:
1. Where priming of the surface
material is necessary, primer should be applied only to the sides of
the joint surfaces and allowed to dry
tack-free before the Backer-Rod is placed. DO NOT prime the Backer-Rod.
Many primers ARE STAINING, be careful where they are applied.
2. Follow suggestions for joint-sealant application as directed by
the sealant manufacturer.
3.
As needed, tool to desired shape using a caulking
tool or old spoon.
Hint: For polyurethanes, wet the tool regularly with water or
toluene to enable a smooth
surface. Soapy water is not recommended as some soaps can interfere
with joint bonds.
4. Most products need 24 hours
minimum cure before applying any type of over-coating. Follow the
manufacturers recommended cures.
HINT: For
those not who are not professional applicators, use masking tape on
surfaces where you do not want sealants. It is very difficult
to remove from unwanted areas.
Product Data Sheets:
Closed Cell Backer Rod
(ground or wall)
High Temp, Cross Linked, Closed Cell (hot pour, lower
cost)
Open Cell Backer Rod
(for lowest out-gassing, hot pour)
Soft Cell
Backer Rod (wall applications / large gap variation)
MSDS
Sheets:
Closed Cell
High Temp, Cross Linked, Closed Cell
Open
Cell Backer Rod
Soft Cell Backer Rod
Related
Backer Rod Products
Backer Rod Insertion Tools
Caulking Guns (Quality caulking guns at great prices).
Complete Information on Sealants
Diamond Blades (for grinding,
sawing crack chasing)
Expansion Joint
Expansion joint products
includes covers & seals for
roof-to-wall expansion
joints, curb mount / curb flange
expansion joints, corner and crossover
expansion joint
covers, and straight flange expansion joint covers.
Primers for sealants
Sealant Products By Family Type:
Expansion Joint Sealants (SL-1, SL-2 Self Leveling sealants)
Exterior Grade Sealants
(NP-1, TX-1, Duralink, Novalink, etc)
High Performance Exterior Grade Sealants
(M-1, Sonolastic 150, Ultra, etc)
Metal Roof & Siding Sealants (Duralink, etc)
Quick Cure, High Strength & Low Temp Cure Sealants (SB-1800
etc)
Structural Adhesive Sealants (Clear 25, M-1, SB-1800)
Window & Glass-Roof Sealants (Clear 25, Sonolastic
150, M-1, Ultra)
TECHNICAL DATA, TYPICAL PHYSICAL PROPERTIES:
CLOSED
& SOFT
Cell Backer Rod:
- Density: 2.0 lbs/ft3 ASTM D-1622
- Tensile Strength: 50 lbs/sq inch ASTM D-1623
- Moisture Absorption: Less than 1% by volume
ASTM C-1083
- Temperature Service Range: -90ºF to +210ºF
- Compression Deflection, 5 PSI @ 25%, ASTM D-1621
(Closed Cell)
- Compression Deflection, 5 PSI @ 50%, ASTM D-1621
(Soft Cell)
- Water Absorption: 0.02% by volume,
ASTM-C-509 (Closed Cell)
- Water Absorption: 0.05% by volume,
ASTM-C-509 (Soft Cell)
- R-Value = 3 per inch of thickness.
- Thermal Conductivity (W/M.°C) =
0.036
OPEN
Cell Backer Rod:
- Density: 1.7 lbs/ft3 ASTM D 1622
- Tensile: 25 lbs/sq inch ASTM D 1623
- Moisture Absorption: .024% by volume ASTM C 509
- Out Gassing: None Open Cell
- Temperature Service Range: -60ºF to +400ºF
U.S. Department of Commerce National Institute of Standards
- R-Value = 3 per inch of thickness.
- Thermal Conductivity (W/M.°C) =
0.036
- Auto Ignition: 700-800ºF
- Elongation: 90% ASTM D 3574
- Air Flow: 90% ASTM D 3574
- Compression set 5% or less (after 80% compression for 30 days)
ASTM D 3574
Our Soft and Closed
Celled backer rods are all polyolefin based. A polyolefin is a
polymer produced from a simple
olefin (also called an
alkene
with the general formula CnH2n) as a
monomer.
For example,
polyethylene is the polyolefin produced by polymerizing the olefin
ethylene.
Polypropylene is another common polyolefin which is made from the
olefin
propylene.
SOFT Backer Rod
Construction Uses: Soft Backer Rod for residential
construction is commonly used to seal air gaps around wall or joint
cavities, between pre-hung doors and windows and rough openings in
wood frame homes. The low compression deflection and high compression
recovery of these products will not bow windows or door jambs and
adapts to seasonal joint movement. Specific uses for Soft Backer Rod
includes log homes, marriage joints, sealing at attic access openings,
casement window joints, some dry wall applications, wall to wall
joints, wall to floor joints, and roof to wall joints, and around
doors and windows in wood frame structures.
Similar product terms:
chinking, log cabin chinking,
log home
chinking, backer rods,
foam backer rod, foam backer rods,
soft celled backer rod, backer
rod installation,
foam rod,
ethafoarn, concrete expansion joint, filler rope
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