Should control joint cuts be filled with this product prior to expoxy finish or is it best to just let the epoxy finish fill them in?

Nether. Any movement in the control joint will crack the filler and/or the finish. I would install the epoxy finish then fill the control joint cuts with a flexible caulk.

You suggested not to use this on a wall but the item is called “wall surface repair” so can you explain.

I purchase the concrete surface repair kit. If its concrete you can use this product. Do not use this on drywall. This product is designed specifically for concrete crack repair.

Instead of painting, can a dye be added to it while mixing?

For the amount of pre work need for this product to work and cure property, I wouldn't mess with additional mixtures. If really needing to die it a different color tone I could contact the manufacturer directly. Good luck

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Gray Concrete Patch & Repair

Product ID: 53613384

Details

Brand
Rust-Oleum
Item Form
Liquid
Material
Plastic
Special Feature
Crack
Specific Uses For Product

⏱️Fast 8-hour cure time

⚙️Two-part industrial epoxy

🏗️Stronger-than-concrete finish

Bs.1670

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Fix it once, fix it right—concrete repairs that last a lifetime!

FAST CURE FORMULA - Ready to paint or coat in just 8 hours—get your project done faster.
UNIVERSAL COMPATIBILITY - Works flawlessly with all concrete coatings, including epoxy shield and rock-solid.
ULTRA HARD SURFACE FINISH - Creates a repair stronger than the original concrete—built to last.
VERSATILE INDOOR OUTDOOR USE - Seamlessly repairs cracks and holes on any concrete surface, inside or out.
PERMANENT INDUSTRIAL STRENGTH BOND - Two-part epoxy ensures no shrinking or cracking for lasting repairs.

Rust-Oleum 301012 Concrete Patch & Repair is a 24 oz two-part epoxy designed for durable indoor and outdoor concrete repairs. It permanently bonds cracks and holes up to 1/2 inch deep without shrinking or cracking, cures in 8 hours, and creates a surface stronger than concrete. Compatible with all concrete coatings, this fast-curing, odorless formula is ideal for professionals and DIYers seeking reliable, long-lasting results.

Specifications

ASIN	B01KSYPCIC
Best Sellers Rank	#7,984 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #35 in Wall Surface Repair Products
Brand	Rust-Oleum
Brand Name	Rust-Oleum
Color	Gray
Compatible Material	Concrete
Container Type	container
Customer Reviews	4.5 out of 5 stars 1,101 Reviews
Full Cure Time	8 hours hours
Global Trade Identification Number	00020066322304
Included Components	Painting Supplies; Patch, Fill & Repair; wall-surface-repair-products
Item Form	Liquid
Item Package Quantity	1
Item Type Name	wall-surface-repair-products
Item Weight	2.7 pounds
Manufacturer	Rust-Oleum
Material	Plastic
Material Type	Plastic
Model	301012
Number of Pieces	1
Other Special Features of the Product	Crack Resistant
Part Number	301012
Special Feature	Crack Resistant
Specific Uses For Product	Interior/Exterior
UPC	020066322304
Unit Count	1 Count
Viscosity Level	Low
Volume	24 fluid ounces
Warranty Description	Warranty
Water Resistance Level	Not Water Resistant

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TrustScore 4.5 | 7,300+ reviews

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