Best Materials Roofing Supplies

1-800-474-7570

 sales@bestmaterials.com

Log-In   Log-Out
Search
FAQ 
   Advanced Search  FIND ANYTHING QUICKLY
 
 Shopping Cart:
  0   Items  In Cart
 Total: $0.00
   
   
   
   
   
   
   EPDM  
   Eternabond  
   Fasteners  
   Hardware & LPG  
   Metal Goods  
   Paint Supplies  
   Pipe Flashings  
   Roof Coatings  
   Roof Hatch/Vent  
   Roof Repair  
   Roof Tiles  
   Rope  
   Safety Products  
   Snow Guards  
   Support Systems  
   Tarps  
   Tool Accessories  
   Tools & Equip.  
   TPO & PVC  
   Underlayments  
   Vents  
   Waterproofing  
 
 
Shop With
 
Confidence
 
 
 

Backer Rod Products

We stock Backer Rod in all types and sizes. We also provide related sealants. We carry Soft Cell, Closed Cell, Open Cell,Hot-Rod Hot-Pour and D-Shaped Backer Rod. We have backer rod (backstop / bond breaker), designed to work with all popular sealants including NP1 Polyurethane, a Novalink Polyether, M1, Duralink, glazing sealants and self leveling sealants like Novalink SL or SL1 & SL2, as well as butyls, polyurethane, silicones, tri-polymers, polysulfide, epoxy, acrylic, etc. The "Hot-Rod XL" Hot-Pour and "Open" celled backer rods are used with hot applied products. Expanding foam sealant tape for sealing and metal roof closure is also available.

 

Backer Rod is an easy to compress rope-like celled polypropylene / polyolefin based foam. It is inserted into a clean joint at the required depth before adding caulk / sealant. Backer Rod creates an even depth and supports (back stops) the sealant / caulk allowing it to form the proper shape (about 2x as wide as deep) and also prevents 3 sided adhesion (bond breaker). It is especially important to use it with Self Leveling Expansion Joint Sealants. Very large and Soft Backer Rods are also used for filling gaps and for sealing in general construction.

Note: Backer Rod is inexpensive, but can be expensive to ship. This is because of the large volume of space it takes in boxes. Dimensional weight applies. More information is here: UPS Dimensional Weight and Oversized Packages

 


Questions?

Email Sales@bestmaterials.com
Or call 1-800-474-7570 /

602-272-8128
You'll get a prompt response!

 

Closed Cell Backer Rod

 

For ground or vertical. Color may be medium charcoal OR gray, (See color sheet here) and is not selectable. 3-6 inch may be white.

See Product Data Sheet

 

Click links below to get cost, detailed information and to order products. Freight can be estimated by adding items to cart and pressing ESTIMATE SHIPPING button. We have special freight for large orders and multiple boxes. Email us for a quote.

 

Backer Rod Shipping Notes.

 

Joint Width Rod Size Prices
1/16 - 3/16 " 1/4 " Click here
3/16 - 1/4 " 3/8 " Click here
1/4 - 3/8 " 1/2 " Click here
5/16 - 1/2 " 5/8 " Click here
7/16 - 5/8 " 3/4 " Click here
1/2 to 3/4 " 7/8 " Click here
11/16" - 7/8 "  1 " Click here
13/16 - 1" 1-1/4 " Click here
1" to 1-1/4" 1-1/2 " Click here
1-3/8 " to 1-3/4 " 2 " Click here
1-3/4" to 2-1/8 " 2-1/2 " Click here
2 " to 2-5/8 " 3 " Click here
 2-3/4 " to 3-1/2 "  4 " Click here
3-1/2 " to 4-1/2 " 5 " Click here
4-1/2 " to 5-1/2 " 6 " Click here

Soft Cell Backer Rod

For more irregular joints, on tilt-wall / vertical joints, and to fill large construction gaps. Easily compressed. Color may be light or dark gray, (Click here see color sheet) and is not selectable. Click here to see Product Data Sheet.

SOFT backer rod is highly compressible and can be easily used at widths as low as 40% of product diameter (lower in small sizes). CLOSED CELL product can be used in all applications where SOFT is specified.

Click links below to get cost, detailed information and to order products. Freight can be estimated by adding items to cart and pressing ESTIMATE SHIPPING button. We have special freight for large orders and multiple boxes. Email us for a quote. click here for Backer Rod Shipping Notes.


Joint Width Rod Size Prices
1/16 "- 3/16 " *use closed cell 1/4 " Click here
1/8 "- 1/4 " 3/8 " Click here
5/16 " to 1/2 " 5/8 " Click here
7/16 - 3/4 " 7/8 " Click here
5/8 - 7/8 " 1-1/8 " Click here
7/8 " to 1-1/4 " 1-1/2 " Click here
1-1/8 - 1-1/2 " 2 Click here
1-1/2 " - 2 " 2-1/2" Click here
1-3/4 " - 2-1/2 " 3 " Click here
2-1/4 " - 3-1/2" 4 Click here

Hot-Rod XL Backer Rod

Hot Rod Backer

Chemically cross-linked closed cell. High-Temperature resistant to 410F. For hot-pour, rubber-asphalt, and thermo-plastic sealants. Resistant to gas, oil and most solvents. Commonly used in roadways, runways and airplane hangers. Click here for Product Data Sheet

 

Click links below to get cost, detailed information and to order products.

 

Freight can be estimated by adding items to cart and pressing ESTIMATE SHIPPING button. We have special freight for large orders and multiple boxes. Email us for a quote. Click here for Backer Rod Shipping Notes.

 

Joint Width Rod Size Prices
3/16 "- 1/4" 3/8 " Click here
1/4 "- 3/8 " 1/2 " Click here
3/8 " - 1/2 " 5/8 " Click here
7/16 " - 5/8 " 3/4 " Click here
9/16 " - 3/4 " 7/8 " Click here
11/16 " - 7/8 " 1 " Click here
13/16 " - 1 " 1-1/4 " Click here
1 " - 1-1/4 " 1-1/2 " Click here
1-1/4 " - 1-1/2 " 2 " Click here

Open Cell Backer Rod

For hot pour where out-gassing and bubbling is a problem, or where quicker curing is needed (it enables 2-sided air exposure). Open cell foam is enable air to reach both sides of joint. VERY soft and compressible. Resistant to gas, oil and most solvents. For Hot Pour applications, generally the joint is thicker and closer to 1:1 size. Small joints should have at least 3mm (.12" compression), Available in black or yellow color.

Open-cell soft backer rod is highly compressive. It serves as a backing for caulking, sealants and all types of hot pour, chemical sealant and cold sealant products. It is yellow in color, odorless and chemically inert, made from Polyurethane.

Open cell backer "Denver Foam" rod can take up to 500F during hot applications and is compatible with all types of ASTM D3405, D1956 and C1330 hot pour and chemically cured sealants.

Open cell allows air to reach sealant from BOTH sides during cure, providing a bubble free, faster, more uniform cure. Open cell construction eliminates out-gassing and cold flow problems sometimes associated with certain materials. Open cell backer rod can also be "saturated" with sealant and used to "carry" sealant to difficult-to-reach repair areas and to create underwater "plugs" (normally it will not absorb sealant without "working it" in).

 

  • Click here for Product Data Sheet for Denver Foam
  • Click here for Data sheet for Tundra Open Cell Foam Rod
  •  

    Click links below to get cost, detailed information and to order products. Freight can be estimated by adding items to cart and pressing ESTIMATE SHIPPING button. We have special freight for large orders and multiple boxes. Email us for a quote. Backer Rod Shipping Notes.

     

    Joint Width Rod Size Prices
    1/8 " - 1/4 " 3/8 " (9mm) Click here
    5/16 " - 7/16 " 5/8 " (15mm) Click here
    7/16 " - 5/8 " 7/8 " (22mm) Click here
    9/16 " - 7/8 " 1-1/8 " (28mm) Click here
    3/4 " - 1-1/4 "   1-1/2 " (38mm) Click here
    1-1/8 " - 1-1/2 " 2 " (50mm) Click here

    D-Shaped Backer Rod

    1/2 width D-Shaped Backer Rod (= 1/2 size of the above yellow rod, Half-Rod) in yellow open foam material. Ideal for log-homes and tight-fitting, very shallow or V-shaped joints.

     

    Click links below to get cost, detailed information and to order products. Freight can be estimated by adding items to cart and pressing ESTIMATE SHIPPING button. We have special freight for large orders and multiple boxes. Email us for a quote.

     

    Click here for Backer Rod Shipping Notes.

     

    Joint Width Length Prices
    7/8 " 1650 feet Click here
    1-1/8 " 1100 feet Click here
    1-1/2 " 500 feet Click here
    2 " 400 feet Click here

    Product Data Sheets

  • Closed Cell Backer Rod (ground or wall)
  • Other High Temp, Cross Linked, Closed Cell (hot pour, lower cost)
  • Open Cell Backer Rod
  • Metric Open Cell Foam Rod (for lowest out-gassing, hot pour, most compression, resistant to gas, oil and most solvents)
  • Soft Cell Backer Rod (wall applications / large gap variation)

  • Related Backer Rod Products

  • Backer Rod Insertion Tools
  • Caulking Guns (Quality caulking guns at great prices).
  • Diamond Blades (for cleaning, grinding, sawing, crack chasing)
  • 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 and Information

    Click here to see our entire sealant/caulk product selection.

    Popular Backer Rod Sealants


  • Expansion Joint Sealants (SL-1, SL-2 Self Leveling sealants)
  • Exterior Grade Sealants (NP-1, TX-1, Duralink, Novalink, etc)
  • High Performance Sealants (M-1, Sonolastic 150, Ultra)
  • 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-190, Ultra)
  • Window & Glass-Roof Sealants (Clear 25, Sonolastic 150, M-1, Ultra
  • Tools to remove Old Joint Sealants

  • How Much Sealant Do you Need? Click here for a Link to a Calculator


    Tips to 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. Sealants are very difficult to remove from unwanted areas.

    Guides for Backer Rod Insertion

     

    Placement & Joint Illustrations:

     

  • Concrete Drive / Garage Expansion Joint Drawing
  • Concrete Drive / Garage Control Joint Drawing Other Design
  • Ideas for Many Types of Interfaces (see sections 4 to 14)
  •  

    Tips for Applying Backer Rod:

     

    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.

    Backer Rod Selection Guide

     
    Soft-Cell
    Closed-Cell
    Hot-Rod
    Open-Cell
    Meets ASTM C1330
    X
    X
     
    X
    Meets ASTM D5249
    X
    X
    X
     
    Meets ASTM C717
    X
     
     
     
    Cold Applied Sealant Use
    X
    X
    X
    X
    Hot Pour Sealant Use
     
     
    X
    X
    Round Foam Rod
    X
    X
    X
    X
    Non-gassing
     
     
     
    X
    Polyethylene
    X
    X
    X
     
    Polyurethane
     
     
     
    X
    Non-absorbing Skin
    X
    X
    X
     
    Cross-linked
     
     
    X
    X
    Prevents Bubbling
    X
     
     
    X
    Closed Cell
     
    X
    X
     
    ASTM C1330 Type B
    X
     
     
     
    ASTM C1330 Type C
     
    X
    X
     
    ASTM C1330 Type O
     
     
     
    X
    ASTM D5249 Type 1
    X
     
    X
     
    ASTM D5249 Type II (2)
     
     
     
     
    ASTM D5249 Type III (3)
    X
    X
     
     
     
     
     
     
     

     

    Soft Backer Rod vs. Closed Celled Backer Rod:

     

  • Soft Cell is generally used in vertical applications, above ground, or where joints are more irregular, and to fill air-gap spaces in general construction.
  • Closed celled is generally used for ground level applications and high moisture environments. It can be used anywhere the soft-celled is used.
  • Soft celled compresses up to 90% in smaller sizes and 50% in larger sizes.
  • Closed celled compresses up to 50% in smaller sizes and 30% in larger sizes.
  • Either can be used with Self-leveling sealants and Vertical Joint Sealants.
  • Both closed and soft cell are Polyethylene based (polyolefin) foam.
  • Both have color variation in the manufacturing process or suppliers
  • Technical Data about Backer Road


    Closed and 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 per.deg C) = 0.036
  •  

     

    HOT ROD XL, Hot Pour Backer Rod

     

  • Density: 2.0 lbs/ft3 ASTM D-1622
  • Tensile Strength: 31.4 lbs/sq inch ASTM D-1623
  • Temperature Range: -90ºF to +410ºF
  • Compression Deflection, 4.7 PSI @ 25%, ASTM D-1621 (Closed Cell)
  • Water Absorption: 0.02% by volume, ASTM-C-509
  • Water Absorption: 0.03 gm/cc, ASTM-C-1016

  •  

    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. ºC) = 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, Closed Celled and Hot Rod backer rod is 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 ethylenePolypropylene is another common polyolefin which is made from the olefin propylene.

     

    SOFT Backer Rod Construction Uses:

     

    Soft Backer Rod for residential construction is also 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.

     

    Compatibility: Our our backer rod products are an inert composition and therefore compatible with all known cold applied sealants including butyl, polysulfide, vinyl acetates, PVA, acrylics, polyurethanes, tri-polymers and silicones. They are chemically inert and will resist oil, gasoline and most other solvents. These materials will not stain nor adhere to sealant materials and are non-exuding. For HOT pour and chemical sealants, use Hot-Rod or the Open Cell Foam. If bubbling / gassing is a problem, Open Cell Foam is best. More Information can be found in the Technical Data Sheets.

     

    EIFS Construction and Joint Design: See the EIFS Guide for details.  Trouble-free EIFS application is accomplished by forming a 1/2" to 3/4" sealant gap wherever EIFS meets a non-EIFS material, such as roofing, trim, or doors and windows, according to the EIMA EIFS Guide. The correct gap makes it possible to finish the exposed edges of the expanded polystyrene, which should be wrapped with reinforcing mesh before the EPS is secured to the sheathing with a waterproofing application of base coat. Then the rest of the finish goes on. Finally, the gap is filled with soft or closed-cell backer rod and a bead of compatible sealant. Novalink Polyether Sealant is an excellent sealant for this applications. Textured Sealants are also available which cure textured to look stucco-like.



     

    Show More Popular Products and Suppliers:

    Popular Products and Pages:

    Adhesives, Backer Rod, Butyl Rubber, Caulk & Sealants, Chem Curbs, Chinking, Concrete Products, Concrete Repair, Concrete Stain & Sealer, Deck Coatings, Deck Hardware, Diamond Saw Blades, Drains, Electric Hot Air Welders, Electric Service Flashings, Eternabond, Expansion Joints, Fall Protection Kits, Fasteners, Fire Stopping Vents, Flashing Tape, Foam Roofing, Gas & Safety Cans, Generators, Hidden, Deck Fasteners, Hot Dipped Roofing Nails, Hot Tar Kettles, Houseboat Roof/Deck Repair, Knowledgebase, Log Home Products, Magnetic Hammers, Metal Roofing, Miami-Dade Nails, Narrow Crown Stainless, StaplesNP1, Polyurethane Foam, Pipe Flashings, Power Tools & Accessories, Propane Hot Air Welders, PVC Roofing, Retrofit Pipe Flashings, Rex Synfelt, Rigging/Lifting Hardware, Rivets, Roof Anchors, Roof Hatch, Roof Leak Repair, Roof Paints & Coatings, Roof Repair Materials, Roof Screws, Roofing Fasteners, Roofing Nails, Rooftop Electrical Flashings, Rope, RV & Trailer Roof Repair, RV Roof Replacement, Safety Rail Systems, Saw Blades, Sealants, Sealing Washers, Snow Guards, Spray Polyurethane Foam, Stinger, Stainless Nails/Fasteners, Tarps, TPO Accessories, Underlayments, Vents, Roof Vents, Video Movies, Waterproofing Products, Wood Deck Hardware


    Popular Suppliers Include:

    ACRO, Active Ventilation, AES Epoxies, AES Raptor, AJC, Albion, Alcoa/Marson, All Line, Alpha ProTech, American Sealants, Applied Technologies, ASI Products, Attic Breeze, Aztec Washer, Babcock-Davis, BAK Welders, BASF, Berger, Berry Plastics, Biltrite, Brentwood, Brewer, CEP, Chem Link, Cleasby, CME Manufacturing, CPR, Deks, Dow, Eagle, EagleView, Erin Rope, ES Products, Eternabond, Everhard, Falltech, Flame Engineering, Flashco, Foxy, Franklin / Titebond, Fry Reglet, Greenstreak, GSSI, Guardian, Harpster, HY-C, Interwrap, ITP, ITW, Jaaco, JL Industries, Josam, Karnak, Levis, LionGuard, LSP, Lucas, Luco, Makita, Marathon, Marshalltown, Maze Nails, MEC, MFM, Miro, MM Products, National Nail, Natural Light, Newborn, OMG, Pam Fasteners, Pearl, Polar Blox, Polycoat, Portals Plus, Powers Fasteners, Prime Source, ProTech, Protecto Wrap, Pylex, Quarrix, QuickMount, RHH Foam, Robetex, Roofmaster, RoofTop Products, Senco, SFS Intec, Sievert, Simpson Strong-Tie, Smith, Sno Gem, Solomon, Sonneborn, Steelhead, SunRise Solar, Sunset, Super Anchor, Surebond, Swan Secure, TRA, Trufast, United / Quest, Vulcan, Wade, Watts, Weatherbond, Werner, Western Colloid, Winco, Zurn



    Shop with
    Peace of Mind!