This will seem like a bizarre question, but does it smell? (Like the majority of Chinese-made closed cell foam materials.)

I use it for taxidermy purposes and havent noticed any smell.

Can i use that to repair my garage floor cracks with the concrete caulk?

I wouldn’t. It’s just foam. If the crack is huge I would use sand as a filler and apply a deep layer of concrete patch

does this break down or come apart easily when wet?

No. Its foam.. it doesnt break down at all

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MD Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps

MD Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps

Product ID: 4320311

Details

Brand
M-D Building
Color
Gray
Item Form
Foam
Item Weight
1.76 ounces
Surface Recommendation

✂️Easily trims to fit any gap

🌧️Waterproof closed-cell foam

🛠️20ft length for extensive coverage

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Description

🛡️ Seal the deal with MD Building Foam — your gap’s new best friend!

BUILT TO LAST - Weather-resistant foam ensures durable indoor/outdoor performance
SEAL LIKE A PRO - Blocks drafts, moisture, dust, and insects for year-round comfort
PERFECT FIT EVERY TIME - Flexible and easily trimmed to fill medium to large gaps flawlessly
VERSATILE GAP SOLUTION - Ideal for driveways, windows, doors, roofs, and more—your all-in-one sealant partner
CAULK SMARTER NOT HARDER - Creates a strong base to prevent caulk waste and cracking

The MD Building Foam Backer Rod is a 20ft long, 5/8in thick closed-cell foam designed to fill medium to large gaps indoors and outdoors. Waterproof and weather-resistant, it prevents drafts, moisture, dust, and insects while providing a sturdy base for caulking projects. Easy to trim and install, it enhances insulation and durability across various surfaces, making it a top-rated, versatile solution for professional-grade weatherization.

Specifications

ASIN	B000BQP1D4
Best Sellers Rank	#2,045 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Hardware Sealers
Brand Name	M-D Building Products
Color	Gray
Customer Reviews	4.6 4.6 out of 5 stars (5,380)
Global Trade Identification Number	00043374715064
Included Components	MD Building - 71506
Item Form	Foam
Item Type Name	MD Building - 71506
Item Weight	1.76 ounces
Manufacturer	M-D Building Products
Material Type	Plastic
Model	MD Building - 71506
Number of Items	1
Number of Packs	1
Part Number	71506
Surface Recommendation	surface_recommendation
UPC	043374715064
Unit Count	1 Count
Warranty Description	Warranty
Water Resistance Level	Waterproof

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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.

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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.

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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.

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TrustScore 4.5 | 7,300+ reviews

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

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Great price for an authentic product. Fast international shipping too!

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B/.30

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered 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 Panama.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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