1/4" x 100' Sashco 30251 Filler Rope Pre-Caulking Closed Cell Backer Rod
Sashco

1/4" x 100' Sashco 30251 Filler Rope Pre-Caulking Closed Cell Backer Rod

5 stars out of 8 reviews
(5.0)|
8 ratings

Key item features

  • REDUCES CAULK USAGE - Helps minimize caulk needed for filling gaps
  • PREVENTS DRAFTS - Fills gaps and openings to block air and moisture
  • DURABLE FOAM MATERIAL - Made from strong poly foam for long-lasting use
  • EASY APPLICATION - Flexible caulk filler cord fits interior and exterior joints
  • VERSATILE USE - Ideal for sashco backer rod and caulk backing ropes applications
Current price is $15.29
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Wed, Apr 22
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Sold and shipped by Sirr0und INC
4.277654516640253 stars out of 5, based on 3155 seller reviews(4.3)
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5 out of 5 stars
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Showing 1-3 of 7 reviews

Apr 11, 2026
alex
Item details
Color: Gray
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

Excellent Gap Filler for Professional Results

This backer rod worked perfectly for my recent exterior sealing project. Since it is a closed-cell foam, I didn't have to worry about it absorbing moisture or outgassing into my sealant. It stayed firm while I pressed it into the gaps, providing a solid base that made achieving a uniform, professional-looking bead much easier. It also helped me save a significant amount of caulk by filling the deep voids before I started. Whether you are working on gutters or sealing around window frames, this is a must-have for proper joint design.

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Oct 1, 2025
Callie
Item details
Color: Gray
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

Gets the job done!

This stuff does the trick. It's easy to use and very affordable too. I'd highly recommend it if you've got a need for it around the house like I did.

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Dec 20, 2022
Harley
5 out of 5 stars review

Verified Purchase

As described

Needed this to replace the old dried up weatherstripping on an old glass display case door. Fit perfect into the groove and was exactly what I needed with a lot left over to spare.

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Helpful?7CNN6K9URAPU38472696