--- product_id: 43832677 title: "Versatile Gray Foam Backer Rod - Set 5/8in x 150ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71552)" brand: "m-d building products" price: "€ 147.62" currency: EUR in_stock: true reviews_count: 13 category: "M D Building Products" url: https://www.desertcart.hr/products/43832677-versatile-gray-foam-backer-rod-set-5-8in-x-150ft store_origin: HR region: Croatia --- # 0.63in max gap fill easy trim & install weather-resistant foam Versatile Gray Foam Backer Rod - Set 5/8in x 150ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71552) **Brand:** m-d building products **Price:** € 147.62 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal smarter, not harder—upgrade your gap game with M-D’s versatile foam backer rod! ## Quick Answers - **What is this?** Versatile Gray Foam Backer Rod - Set 5/8in x 150ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71552) by m-d building products - **How much does it cost?** € 147.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/43832677-versatile-gray-foam-backer-rod-set-5-8in-x-150ft) ## Best For - m-d building products enthusiasts ## Why This Product - Trusted m-d building products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seal Like a Pro:** Effortlessly fills and seals medium concrete gaps up to 5/8in for airtight, draft-proof results. - • **Multipurpose Master:** Ideal for expansion joints, door frames, window sills, and even leaky roofs—your all-in-one caulk base. - • **Custom Fit, Zero Fuss:** Easily trimmed and twisted to size—perfectly tailored sealing without the mess or hassle. - • **Quick & Clean Installation:** Push in place and top with caulk—no adhesives needed, saving you time and frustration. - • **Built to Brave the Elements:** Crafted from durable, weather-resistant foam that stands strong indoors and outdoors, rain or shine. ## Overview The M-D Building Products Versatile Gray Foam Backer Rod is a high-quality, weather-resistant foam designed to fill and seal medium gaps up to 5/8 inch. Perfect for concrete joints, expansion gaps, and draft prevention, it offers easy installation with no adhesives required. Durable for indoor and outdoor use, it enhances caulking adhesion and improves home insulation, making it a must-have for professional-grade sealing projects. ## Description Product description Compare Backer Rod Small Gray Backer Rod Medium Gray Backer Rod Large Gray Backer Rod Ex-Large Gray Backer Rod XX-Large Gray Backer Rod Review: good quality, good service - I ended up ordering the wrong size for my project and had to return. However, the backer rod seems to be made of high-quality foam, and it feels dense and durable. It has a nice, consistent texture that should be great for filling gaps and joints. I can't speak to how well it works in the long term, but it appears sturdy and like it would do the job as intended. While I didn't end up using the backer rod, desertcart's return service made the process incredibly easy and the refund was instant. Review: Good product - Works very well for what I need. ## Features - Quality Construction: This gap filler is made from high-quality, weather-resistant materials, ensuring long-lasting durability and performance. It effectively seals medium gaps between surfaces, preventing drafts and dust from entering your home. Suitable for both indoor and outdoor use, it withstands various weather conditions, providing consistent protection and improved comfort. - Concrete Gap Filling Excellence: Our product excels in filling concrete gaps, creating a strong foundation for caulking projects. Utilize this foam to effectively fill joints between surfaces, ensuring dependable adhesion for caulking applications that promise enduring durability and resilience. - Complete Gap Solution: This product provides versatile gap filling, preventing drafts and offering a sturdy base for caulking. Perfect for expansion joints in driveways and sidewalks, it can be twisted for larger gaps and easily trimmed with scissors to the desired size. - Effortless Installation: Enjoy a hassle-free setup by effortlessly pushing the backer rod into most joint openings until it fits snugly. Once installed, enhance the seal further by applying caulk on top—no need for messy sealants or adhesives. - Versatile Application: From repairing leaky roofs and window sills to addressing drafty doors, the Backer Rod is your go-to solution! Beyond sealing surface gaps, it excels in insulating, enhancing airtightness, and damp-proofing your home—offering multifaceted benefits for various household needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C7EJHL0 | | Best Sellers Rank | #42,055 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #158 in Hardware Sealers | | Brand | M-D Building Products | | Brand Name | M-D Building Products | | Color | Gray | | Customer Reviews | 4.7 out of 5 stars 1,614 Reviews | | Global Trade Identification Number | 00043374715521 | | Included Components | MD Building - 71552 | | Item Form | Foam | | Item Type Name | MD Building - 71552 | | Item Weight | 1 Pounds | | Manufacturer | M-D Building Products | | Material Type | Foam | | Maximum Gap Fill | 0.63 Inches | | Model | MD Building - 71552 | | Number of Items | 1 | | Part Number | 71552 | | Surface Recommendation | Door | | UPC | 043374715521 | | Unit Count | 1.0 Count | | Warranty Description | Warranty | | Water Resistance Level | Water Repellent | ## Product Details - **Brand:** M-D Building Products - **Color:** Gray - **Item Form:** Foam - **Item Weight:** 16 ounces - **Maximum Gap Fill:** 0.63 Inches ## Images ![Versatile Gray Foam Backer Rod - Set 5/8in x 150ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71552) - Image 1](https://m.media-amazon.com/images/I/61HHJ4QXlvL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ good quality, good service *by M***L on November 9, 2024* I ended up ordering the wrong size for my project and had to return. However, the backer rod seems to be made of high-quality foam, and it feels dense and durable. It has a nice, consistent texture that should be great for filling gaps and joints. I can't speak to how well it works in the long term, but it appears sturdy and like it would do the job as intended. While I didn't end up using the backer rod, Amazon's return service made the process incredibly easy and the refund was instant. ### ⭐⭐⭐⭐⭐ Good product *by C***A on October 8, 2025* Works very well for what I need. ### ⭐⭐⭐⭐⭐ Great price. *by M***Y on October 23, 2025* Works great! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/43832677-versatile-gray-foam-backer-rod-set-5-8in-x-150ft](https://www.desertcart.hr/products/43832677-versatile-gray-foam-backer-rod-set-5-8in-x-150ft) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-24*