Rajesh, 45, Mumbai — needed to seal expansion joints in driveway exposed to monsoon rain.
Used 20ft foam backer rod, sealed with caulk, preventing water ingress. Saved ₹200 compared to local sealants, lasting over 2 monsoons.
You save 720 (31%)
31% off the seller list price
Estimated doorstep delivery by 1 Nov - 3 Nov from USA






Effective Gap Sealing at Competitive Price
M-D Building Foam Backer Rod is a high-quality, weatherproof foam product designed for sealing large gaps, cracks, and expansion joints in Indian construction and home projects. Made from durable, weather-resistant foam, it provides a reliable foundation for caulking and sealing applications, ensuring long-lasting protection against drafts, moisture, and dust ingress.
This foam backer rod is versatile, suitable for both indoor and outdoor use, including concrete joints, driveways, sidewalks, and window sills. Its round shape and solid pattern make it easy to twist for larger gaps and trim with scissors to fit specific sizes. Once installed, it enhances airtightness and damp-proofing, helping to improve home comfort and energy efficiency.
Imported from the USA, this product offers superior quality compared to local alternatives, with consistent performance in Indian weather conditions. Delivered via ExpressBox, it arrives within 14-16 days, with all duties and GST included, ensuring a hassle-free purchase experience.
Superior Quality & Resilience
This foam backer rod is crafted from weather-resistant, durable foam imported from the USA, ensuring dependable performance in Indian climate conditions. Its solid construction prevents drafts, moisture, and dust ingress, supporting long-term sealing and insulation. Unlike local foam products, it maintains integrity under high humidity and temperature variations, making it ideal for outdoor and indoor sealing projects.
Designed for Household & Construction Needs
Perfect for sealing expansion joints in driveways, sidewalks, and window sills, it also helps in insulating and damp-proofing homes. Suitable for DIY repairs and professional projects, it provides a sturdy base for caulking, enhancing airtightness and energy efficiency. Skip if you need flexible or non-foam sealants; this product excels in large-gap, weatherproof applications.
Typical situations where M-D Building Foam Backer Rod helps — illustrative scenarios, not customer reviews.
Rajesh, 45, Mumbai — needed to seal expansion joints in driveway exposed to monsoon rain.
Used 20ft foam backer rod, sealed with caulk, preventing water ingress. Saved ₹200 compared to local sealants, lasting over 2 monsoons.
| Material Type | Polyurethane foam |
| Weather Resistance | Weatherproof, UV resistant |
| Recommended Use | Sealing large gaps, expansion joints, concrete joints |
| Reapplication Time | Once installed, caulk on top for enhanced seal |
| Shelf Life | Unopened, indefinite; replace if damaged |
| Cost per use | ₹80.50 per ft |
| Feature | M-D Building Foam | Others |
|---|---|---|
| Material & Durability | Polyurethane foam, weather-resistant, UV stable, long-lasting | Generic foam, less weatherproof, may degrade faster in monsoon |
| Size & Length | 5/8" diameter, 20ft length supports large gaps | Typically shorter or thinner, requiring multiple pieces |
| Application & Ease of Use | Twist for larger gaps, trim with scissors, push into joints | Less flexible, may require adhesives or special tools |
| Price & Cost Efficiency | ₹80.50 per ft support for cost-effective sealing | ₹300-₹500 per meter, less economical for large projects |
| SKU | vtw3958 |
| GTIN | 00043374715064 |
| Brand | M-D Building Products |
| Size | 5/8" x 20' (15.88mm x 6.096m) |
| Color | Gray |
| Material | Plastic foam |
| Item Shape | Round |
About M-D Building Products
M-D Building Products is a trusted US brand known for durable, weather-resistant building materials and sealants.
Compliance & Legal
No specific regulatory compliance beyond general safety; suitable for indoor and outdoor sealing in India. Use as directed for best results.
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This item:
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support
1,610

This item
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support
1,610
Total price:
8,830
You save 4,150 (32%) Extra3 items selected
3 items
8,830You save 4,150 (32%) Extra
| Attributes | Current ![]() | ![]() | ![]() | ![]() | ![]() | ||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 1,610 2,330 | 3,550 5,640 | 3,670 5,010 | 3,830 5,460 | 2,830 3,290 | 2,770 3,220 | 5,640 6,560 |
| Rating | 4.60(5,429) | 4.40(13K+) | 4.40(13K+) | 4.40(13K+) | 4.13(8) | 4.13(8) | 4.13(8) |
| Brand Name | M-D Building Products | Flex Seal Liquid | Flex Seal Liquid | Flex Seal Liquid | GORILLA | GORILLA | GORILLA |
| Item Form | Foam | N/A | N/A | N/A | N/A | N/A | N/A |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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