can you use crack stix sealent over the top? crack stix is applied with the use of a torch to melt and flow mostly around pools

The basic purpose of this kind of spacer is to keep anything from restricting the movement of the floor when and if it needs to expand. Anything you'd put over or into the foam that would harden, would defeat the purpose of providing the "free space" for floor expansion/contraction and thus more likely cause the floor to buckle or otherwise fail or deform. This is true for wood AND tile floors. For your application, an "installed gap" - left free of "trash" - and then filled with VERY flexible filler might suit you better. TOTAL floor failure is possible if it ever needs to move a lot - and can't. I mean TOTAL. Nature, you don't mess with... Seen it happen a few times. "Dang!"

Is this removable and suitable for a historic house?

I find this product to be inserted and held in place by "pinch" tension and can easily be removed.

is this fine for sealing gaps around an air conditioner?

I believe it would as long as the gaps around the ac are withing the tolerances of the backer rod. The backer rod diameter should be no less than 1/4" greater than the gap to be filled. Maximum gap of 3/4" for 1" backer rod. I am doing a diy cabin build and used different diameter backer rods based on gaps around windows and doors. Works great for me.

Can this go between the house and patio?

if your using to keep out water you should caulk over to seal it better. its also good for air leaks too like window a/c units.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Tondiamo Caulk Saver Foam Backer Rod Gap Filler Concrete Rope Caulk Gray Sealant Backing Rod for Fence Wall Gap Floor Window Door Windproof Home Repairing(1/2 Inch x 30 Ft)

Tondiamo Caulk Saver Foam Backer Rod Gap Filler Concrete Rope Caulk Gray Sealant Backing Rod for Fence Wall Gap Floor Window Door Windproof Home Repairing(1/2 Inch x 30 Ft)

Product ID: 421102842

Details

Brand
Tondiamo
Color
gray
Item Form
Rod
Item Weight
0.13 kg
Maximum Gap Fill
0.5 inches

🌀Flexible, bendable foam for easy fitting

💧Closed-cell foam resists water absorption

🧵30 ft length for versatile use

29607CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Description

🛠️ Seal smart, save time—your go-to gap filler for flawless finishes!

UNIVERSAL GAP FILLER - Ideal for walls, windows, doors, pavements, and even creative DIY crafts
EFFORTLESS INSTALLATION - Simply press into gaps before caulking—no tools or hassle required
LONG LASTING 30 FT ROLL - Enough length to tackle multiple projects without constant replacements
FLEXIBLE BENDABLE DESIGN - Easily molds to any gap or joint for a perfect seal every time
WATER RESISTANT CLOSED CELL FOAM - Prevents moisture intrusion, ensuring durability and protection

The Tondiamo Caulk Saver Foam Backer Rod is a 30-foot long, 1/2 inch diameter gray foam rod made from closed-cell, water-resistant material. Designed for professional and DIY use, it flexibly fills gaps in walls, windows, doors, and pavements, providing a neat surface for caulking while reducing sealant usage. Lightweight and easy to install, it’s a versatile solution for durable, windproof, and moisture-resistant home repairs.

Specifications

ASIN	B09QYDDFF8
Best Sellers Rank	#27,319 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Rope Caulk #44,980 in Hardware
Brand Name	Tondiamo
Color	gray
Customer Reviews	4.4 4.4 out of 5 stars (67)
Item Form	Rod
Item Weight	0.13 kg
Manufacturer	Tondiamo
Material Type	Foam
Maximum Gap Fill	0.5 inches
Model	Tondiamo-Foam Backer-852
Number of Items	1
Part Number	Tondiamo-Foam Backer-852
Surface Recommendation	Walls
Unit Count	1 Count
Water Resistance Level	Water Resistant

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

29607CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews