Can this product be used to repair wider cracks occurring in stem walls of raised foundations?

We recommend that homeowners only use the kits on cracks up to 1/2" wide. Anything wider we would recommend you contact us first for consultation or hire a crack repair specialist.

Can you apply product on a wall that is actively leaking

No. If the crack is actively leaking water, you must wait for it to subside before beginning urethane injection.

Does kit come with both corner and flat ports?

The kit include only flat surface ports. If you need a kit with corner ports, please contact us directly.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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- RadonSeal Complete DIY Foundation Crack Repair Kit, Urethane Sealant, 20 Ft | Low-Viscosity Urethane Injection for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free

Product ID: 23752537

Details

Brand
RadonSeal
Color
Grey
Full Cure Time
24 hours
Item Form
Expanding Foam
Maximum Gap Fill
0.5 inches

💧Waterproof urethane sealant

🔧Drill-free injection tech

🛡️Radon & gas barrier

¥106237

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

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Description

🛠️ Seal smart, live safe — the ultimate DIY foundation fix!

DUAL PROTECTION BARRIER - Stops water leaks and blocks harmful radon and soil gases for a safer home.
INTERIOR ONLY APPLICATION - Save thousands by repairing from inside—no exterior excavation needed.
EFFORTLESS DRILL FREE REPAIR - Fix foundation cracks without damaging your walls or tools.
PRECISION URETHANE INJECTION - Low-viscosity formula ensures deep, permanent sealing of hairline cracks.
DIY FRIENDLY WITH STANDARD TOOLS - Compatible with any caulking gun for a quick, professional finish.

RadonSeal Complete DIY Foundation Crack Repair Kit offers a drill-free, low-viscosity urethane injection system designed for permanent sealing of basement wall cracks up to 0.5 inches. This waterproof, expanding closed-cell foam not only prevents water infiltration but also blocks radon and soil gases, enabling interior-only repairs that save costly exterior excavation. Compatible with standard caulking guns, it cures fully in 24 hours, providing a professional-grade solution trusted by homeowners and ranked among top wall repair products.

Specifications

ASIN	B00II7JOHM
Best Sellers Rank	#110,408 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #348 in Wall Surface Repair Products
Brand Name	RadonSeal
Color	Grey
Customer Reviews	4.6 4.6 out of 5 stars (189)
Full Cure Time	24 hours
Included Components	Surface Sealer, Injection Foam, Ports, Accessories
Item Form	Expanding CLosed-Cell Foam
Manufacturer	Novion
Material Type	Polyurethane
Maximum Gap Fill	0.5 inches
Model	303
Number of Items	1
Part Number	303
Surface Recommendation	Poured Concrete Walls, Leaking Form Ties, Cove Joints
UPC	856255006607
Unit Count	1 Count
Water Resistance Level	Waterproof

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.

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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

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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

3 days ago

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¥106237

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

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

3 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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