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What are the different sizes of backer rod?

Jim Brown

What are the different sizes of backer rod?

Backer Rod Products

Joint Width Open Cell Rod Sizes Prices
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

How much can you compress backer rod?

How much does backer rod compress? Open cell backer rod must be compressed at least 25 percent; it does not hurt these rods to be com- pressed as much as 75 percent of their diameter. This allows the applicator to use fewer sizes in vary- THE CONSTRUCTION SPECIFIER/MARCH ’80 41 Page 3 ing width joints.

How tight should backer rod fit?

For expansion joints the backer rod should be just large enough to fit snugly into the control joint (which should be 3/8″ for CMU walls). There should be about 1/2″ of depth from the backer rod to the surface of the masonry wall. The backer rod should be snug enough to stay in place during caulking of the joint.

When should you use backer rod?

A backer rod fills a wide gap between surfaces to allow you to more easily fill the gap with caulk. Commonly, you use a backer rod to help bridge a gap that is 1/4 to 1/2 inches or more wide.

How big of a backer rod do I Need?

Typically, backer rod should be installed at a consistant depth within the joint, and should ensure that the depth of the final sealant application is half the width of the joint. For more information on backer rod, see ” Backer Rod Selection Guide ” on the Tremco website . A box of 3-inch closed-cell backer rod. Well, it used to be a box …

What kind of material is backer rod made of?

Armacell’s FillPro™ backer rod material is made from polyethylene or polyurethane foam, making it compatible with the common industry joint sealants or caulking. Backer Rod’s four main benefits: Increase elasticity in the joint sealant.

Can a cell rod be used as a backer rod?

Open cell rods are used in all other indoor applications to fill different sizes of gaps. The choice of backer rod diameter to use depends on the width of crack to be filled. The diameter should be slightly larger than the width of gap to be filled.

Can a backer rod be used in a horizontal joint?

Open-cell backer rod should not normally be used in horizontal joints where water may pool, potentially penetrate the joint sealant, and be absorbed by the backer rod. Some of the backer rod sizes recommended in the table may not be available as an actual product.

What are the different sizes of backer rod?

Jim Brown

What are the different sizes of backer rod?

Backer Rod Products

Joint Width Open Cell Rod Sizes Prices
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

How tight should backer rod fit?

For expansion joints the backer rod should be just large enough to fit snugly into the control joint (which should be 3/8″ for CMU walls). There should be about 1/2″ of depth from the backer rod to the surface of the masonry wall. The backer rod should be snug enough to stay in place during caulking of the joint.

What is the difference between open and closed cell backer rod?

The main difference between open and closed cell rods is the density. Open cell offers a breathable material while closed cell rods are denser as well as firmer. It is easier to bend an open cell because of its flexibility and softness thus it is easier to install.

When should backer rod be used?

A backer rod is a cylindrical type of foam used to fill cracks and gaps between building materials. It is used in a wide range of applications including tiling, flooring, window paneling and stoneware among others.

Is backer rod necessary?

The backer rod is exceptionally helpful for applying a sealant to asymmetrical and fluctuating joint widths, as seen in decorative stone or tile work. If bubbling concerns are critical, then the backer rod is necessary for your project.

How big does a backer rod need to be?

Standard practice for closed-cell backer rod is that with joints less than 3/4 inch (19mm) wide, the backer rod diameter should be 1/8 inch (3mm) larger than the joint width, and with joints 3/4 inch (19mm) or larger, the backer rod diameter should be around 25%-30% larger than the joint width. What does a backer rod do?

Can a backer rod be used in a horizontal joint?

Open-cell backer rod should not normally be used in horizontal joints where water may pool, potentially penetrate the joint sealant, and be absorbed by the backer rod. Some of the backer rod sizes recommended in the table may not be available as an actual product.

Can you use sand as a backer rod?

Many sizes/diameters are available for optimal fitting to the size of the joint being sealed. Also to know is, Can you use sand instead of backer rod? Use sand or backer rod to fill any large joints before caulking. I would recommend using a Styrofoam or wood rather than sand as a backer rod.

What kind of backer rod is used for caulking?

It’s important to understand that cell structure makes a critical difference when it comes to irregular joint application, the desired flexibility in the joint, or sealant being used. Armacell’s FillPro™ backer rod material is made from polyethylene or polyurethane foam, making it compatible with the common industry joint sealants or caulking.

What are the different sizes of backer rod?

Jim Brown

What are the different sizes of backer rod?

Backer Rod Products

Joint Width Open Cell Rod Sizes Prices
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

What are the different types of backer rods?

There are three main types of backer rods: open-cell, closed-cell and bi-cellular. Bi-Cellular backer rod is flexible and very compressible extruded shape (usually cylindrical), with a surface skin, that is composed of both open and closed-cell material. SOF® Rod is a soft, bi-cellular polyethylene foam backer rod.

How tight should backer rod fit?

Backer rods should be approximately 25% wider than the gap and should be firmly placed at a consistent depth not less than 1/8″ and not to exceed 1/2″ in thickness.

When should you use backer rod?

Backer rods are usually round, flexible lengths of foam that are used as a “backing” in joints or cracks to help control the amount of sealant/caulking used and create a back stop. Many sizes/diameters are available for optimal fitting to the size of the joint being sealed.

Is backer rod waterproof?

The rods were designed specifically as filler for joints as well as fissures found between materials before the caulking or chinking material is applied to finish the filling process. The gap is then ensured that it is airtight and waterproof due to the filling added in between. Additionally, do I need backer rod?

Can backer rod be cut?

Can you cut backer rod? use a sharp utility razor knife, point poke it in the middle, then slide down slowly cutting it in half. backer rod should compress 50% smaller then what you have, you might have bought the wrong size. you need to keep it at a certain depth for the caulk.

Are backer rods waterproof?

The rods were designed specifically as filler for joints as well as fissures found between materials before the caulking or chinking material is applied to finish the filling process. The gap is then ensured that it is airtight and waterproof due to the filling added in between.

Can backer rod be used in shower?

However as far as backer-rod is concerned you can use back-rod in a shower. As for what type, I’d go with closed-cell for less possibility of water absorption. For backer rod size you generally want 1/8″ larger than the joint size, so 3/4″ backer rod in this case.

How big does a backer rod need to be?

For joints that are smaller than 19mm, the rod should be 3mm larger than the width of gap. Bigger joints will require a larger allowance than 3mm. however, these specifications are only appropriate for closed cell rods. When using open cell rods, the diameter should be 25 percent larger than the width of gap to be filled.

Can a backer rod be used in a horizontal joint?

Open-cell backer rod should not normally be used in horizontal joints where water may pool, potentially penetrate the joint sealant, and be absorbed by the backer rod. Some of the backer rod sizes recommended in the table may not be available as an actual product.

What can you use soft backer rod for?

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.

What kind of backer rod is used for caulking?

It’s important to understand that cell structure makes a critical difference when it comes to irregular joint application, the desired flexibility in the joint, or sealant being used. Armacell’s FillPro™ backer rod material is made from polyethylene or polyurethane foam, making it compatible with the common industry joint sealants or caulking.