I have weeds cmg up bw my concrete slabs on driveway, do I just put this into the concrete joint gaps and then apply sikaflex on top? beginner here

I use this stuff between walls or bricks before the the pour. Then rip the perforated top off and fill with Urathane like sika. It allows movement of the slab and keeps things from breaking. If you have an existing joint, just buy the round foam and stuff it in leaving a space at the top. Be advised any self leveling compound will find even the smallest holes and all drain out. So if you don’t have a good deal use a little latex caulk then apply sika

is this product good to use between concrete pool and paver decking

Yes, I used the Reflectix between a concrete wall and a paver driveway and it is working pretty well, I recommend to use a sealant(silicon)for outdoors at the top to prevent the dust cumulate in joints, the sealant should cover the joint with the pool, the top of the Reflectix and the joint with the paver decking. Hopefully it helps.

Could this be used for a concrete form?

Not recommended, since it has limited strength and bends easily. I have used this around the edge of a sidewalk during resurfacing to prevent run off of cement and in some landscaping but not for any concrete forms.

Is this product UV resistant?

If used correctly it is between two surfaces and not exposed to sunlight. It is made to go between a wall and a concrete sidewalk or as a filler in an expansion joint for example.

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Reflectix EXPO4050 Series 4"x50' Expansion Joint

Product ID: 120283378

Details

Brand
Reflectix
Colour
Black
Item form
Paste
Item weight
1.1 Pounds
Maximum gap fill
50 Inches

💧Waterproof design for lasting durability

📏4-inch width for precise gap filling

📐50-foot length covers extensive expansion needs

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7371647₫

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Description

🛠️ Seal the gap, secure your space — expansion perfected!

BUILT TO LAST - Waterproof plastic material resists wear and weather damage
TRUSTED BRAND QUALITY - Manufactured by Reflectix, a leader in weatherization solutions
EFFORTLESS INSTALLATION - Lightweight 1.1 lb design makes application quick and easy
VERSATILE WALL COMPATIBILITY - Optimized for wall surfaces to prevent drafts and moisture intrusion
PRECISION FIT MAXIMUM COVERAGE - 4" width and 50' length ensure seamless expansion joint sealing

The Reflectix EXPO4050 Series 4"x50' Expansion Joint is a durable, waterproof plastic weatherization solution designed for walls. Lightweight and easy to install, it offers precise 4-inch width coverage over a 50-foot length, making it ideal for sealing expansion gaps and preventing moisture intrusion. Manufactured by Reflectix, this product combines trusted brand quality with practical performance for professional-grade weather stripping.

Specifications

ASIN	B004WAPFS6
Best Sellers Rank	970,098 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,676 in Weather Stripping
Brand	Reflectix
Colour	Black
Country Of Origin	USA
Global Trade Identification Number	00716511560017
Included Components	Appliance Parts & Accessories, Appliance Replacement Parts, appliance-replacement-parts
Item Form	Paste
Item Type Name	4"x50' Expansion Joint
Item Weight	1.1 Pounds
Manufacturer	REFLECTIX INC
Manufacturer Part Number	EXPO4050
Material	Plastic
Maximum Gap Fill	50 Inches
Model Number	EXPO4050
Number of Items	1
Surface Recommendation	Walls
UPC	716511560017
Unit Count	1.0 count
Water Resistance Level	Waterproof

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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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7371647₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered 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 Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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