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Foam Backer Rod for Gaps Concrete Crack Filler Joints Foam Gap Filler Caulk Saver Backing Rod Concrete Filler Rope (Black, 3/8 Inch x 33 Feet)
✅ In stock
F
Grade
Analysis Confidence
59%
Price verified Sep 29, 2026 2:07 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉A lower price did appear very recently, suggesting the market may revisit that level before long.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
1.5/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
HKACSTHI
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓【Foam Back Rod with Different Sizes】Our foam rope is made of foam in round shape, with the features of good consistency and sturdy. For water and temperature resistant, the baker rod has ensured long-lasting performance. This flexible and soft foam gap filler will fill cracks adequately. This concrete filler foam rod is soft enough to compress, but firm enough to fill a seal tightly.
✓【Low Cost and Reliable Backer Rod】 Our foam baker rod is a low cost way for you to fix gaps and joints. The concrete crack filler caulk foam can be used to fill large gaps and openings to prevent drafts and can be used when the old caulk was badly cracking. It is a very useful tools in your house, not only for gaps and joints. You can use it everywhere you like in your house and neighborhood.
✓【More Choices for Your Need】You could choose the size and length of concrete joint filler according to your requirements. The backer filler rope size can be customized for various uses with scissors or blades. It is a sufficient length for daily use and replacement. And the foam gap filler is great for joints between asphalt and concrete or to fill cracks in asphalt or concrete.
✓【Effortless to Handle】Our foam baker rod fits well in cracks. Easy to push into areas and easy to cut. You can easily get the desired length and put it into the gap, and you can twist multiple strands of cord together for extra large gaps. First, you should clean the area and insert the backer rod firmly and uniformly into the joint or gap. And then apply suitable sealant fully over the backer rod and smooth it with a tool for a uniform finish.
✓【Wide Application】Our foam rods help you saving a lot of filler material and works for most kinds of cracks, such as expansion joints in driveway and sidewalks, wood cracks, wall cracks, door and window joints, pavement joints, also can be used to seal windows during cold weather, post dog's ears up, make ring holders, and hand craft projects.
⚙️ Specifications
Color
Black
Brand
HKACSTHI
Item Form
Foam
Surface Recommendation
Counter Top, Door, Gutter, Pipe, Sink, Tile, Tub, Walls, Window
Water Resistance Level
Waterproof
Brand Name
HKACSTHI
Number of Items
1
Manufacturer
HKACSTHI
UPC
600248658812
Unit Count
33 Feet
Included Components
foam backer rod
