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Sealers
  1. Home
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  4. Adhesives & Sealers
  5. Sealers
  6. M-D Building Foam…
M-D Building Products

M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support

4.6
(5,429 Ratings)
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹1,610₹2,330

You save ₹720 (31%)

31% off the seller list price

Qty
100+ bought across the US last month
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support — 5/8" x 20'
5/8" x 20'
₹1,610
₹2,330
In Stock
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support — 1/2" x 20'
1/2" x 20'
₹1,760
₹2,300
In Stock
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support — 5/8" x 150'
5/8" x 150'
₹11,380
₹16,220
In Stock
M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support — Gris
Gris
₹24,580
₹37,450
In Stock

Estimated doorstep delivery by 1 Nov - 3 Nov from USA

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Effective Gap Sealing at Competitive Price

About this item

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.

Key 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.

Why choose this product

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.

How to use

  • Insert foam into joint — Push the foam backer rod into the gap until it fits snugly, twisting for larger gaps if needed.
  • Trim excess — Use scissors to cut the foam to the desired length, ensuring it fits flush with the surface.
  • Apply caulk — Seal the foam with a compatible caulk or sealant, pressing it into the joint for airtight sealing.

Example scenarios

Typical situations where M-D Building Foam Backer Rod helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

Rajesh, 45, Mumbai — needed to seal expansion joints in driveway exposed to monsoon rain.

How this product helps

Used 20ft foam backer rod, sealed with caulk, preventing water ingress. Saved ₹200 compared to local sealants, lasting over 2 monsoons.

Specifications & installation

Specifications

Material TypePolyurethane foam
Weather ResistanceWeatherproof, UV resistant

Installation & usage

Recommended UseSealing large gaps, expansion joints, concrete joints
Reapplication TimeOnce installed, caulk on top for enhanced seal
Shelf LifeUnopened, indefinite; replace if damaged
Cost per use₹80.50 per ft

How we compare

FeatureM-D Building FoamOthers
Material & DurabilityPolyurethane foam, weather-resistant, UV stable, long-lastingGeneric foam, less weatherproof, may degrade faster in monsoon
Size & Length5/8" diameter, 20ft length supports large gapsTypically shorter or thinner, requiring multiple pieces
Application & Ease of UseTwist for larger gaps, trim with scissors, push into jointsLess 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

Product details

SKUvtw3958
GTIN00043374715064
BrandM-D Building Products
Size5/8" x 20' (15.88mm x 6.096m)
ColorGray
MaterialPlastic foam
Item ShapeRound

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.

Customer Reviews

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FAQ, See What Others Asked

What surfaces can this foam backer rod be used on?
This foam backer rod is suitable for concrete, masonry, and other hard surfaces. It provides a reliable base for caulking expansion joints, driveways, sidewalks, and window sills, supporting weatherproof sealing in Indian conditions.
Is this foam backer rod weatherproof and UV resistant?
Yes, the foam is made from weatherproof, UV-resistant material imported from the USA, ensuring durability against Indian monsoon, sun, and temperature variations.
How do I install this foam backer rod?
Push the foam into the joint until it fits snugly, then apply caulk on top. It can be twisted for larger gaps and trimmed with scissors for a perfect fit, supporting airtight and moisture-proof sealing.
Can I use this foam backer rod for outdoor sealing projects?
Absolutely. Its weather-resistant foam makes it ideal for outdoor expansion joints, driveways, sidewalks, and other exterior sealing needs in India.
What is the size and length of this foam backer rod?
It measures 5/8 inch in diameter and 20 feet in length, suitable for large gaps and expansion joints in various household and construction applications.

Frequently bought together

M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support

This item:

M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support

₹1,610

M-D Building Foam Backer Rod, Gray, 20ft x 5/8in for Large Gaps | Weatherproof Sealant Support

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%) Extra

3 items selected

3 items

₹8,830

You save ₹4,150 (32%) Extra

Product Comparison

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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 NameM-D Building ProductsFlex Seal LiquidFlex Seal LiquidFlex Seal LiquidGORILLAGORILLAGORILLA
Item FormFoamN/AN/AN/AN/AN/AN/A
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹1,610₹2,330

You Save ₹720

Estimated doorstep delivery by 1 Nov - 3 Nov from USA
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Your Order Journey: From Purchase to Doorstep

You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you
You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

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₹4,830+ (3× the price)
₹1,610 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
14-16 days · live tracking
Grey market, no guarantee, no protection, no refund
100% authentic US, India-verified, return available
Lost in transit = ₹0 back
Full protection included