can this be used as a slurry to wet/bond a concrete wall cap, to the mortar underneath?

If I understand your question, by itself, no. It is an additive. You can add it to unfortified thin set and comb it to the cap. Let it cure for 24 hours and then place in a setting bed that has also been fortified. The latex will keep it from freezing and as an additive instead of water, there will be less shrink stress.

My red brick chimney has a crack (8 vertical feet). Want to use red morter to patch it. If I pretreat the brick with this will it help the bond?

I want to say yes. The product works. Not sure about mortor application personally, but can't see why it wouldn't. You could always contact their customer service and ask, but I liked the product...

Does it dry white or clear?

Depending on product you are applying it to, usually clear but sometimes slight milky color.

Do you mix this with sand topping cement as replacement for water for thin horizontal applications?

I would check to see if anything is mixed in with what you're using. A lot of 'topping compounds' have a bonding agent mixed in. If its straight cement, it should work, the bonding adhesive sill set it off so I would do a test run first.

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Concrete Bonding Adhesive

Product ID: 24871929

Details

Brand
SIKA
Item Form
Liquid
Material
Concrete
Special Feature
Strong
Specific Uses For Product
Amateur

💪500 PSI tensile strength

❄️Freeze-thaw resistant

🛠️Ready-to-use, no dilution

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Description

💥 Cement your legacy with SikaLatex R — where strength meets simplicity!

EFFORTLESS APPLICATION - No dilution needed—just pour and apply for quick, professional-grade results.
UNMATCHED BONDING POWER - Boost your concrete’s tensile strength to 500 PSI for rock-solid durability.
WEATHERPROOF PERFORMANCE - Engineered to resist freeze-thaw cycles, ensuring long-lasting stability in any climate.
DURABLE ACRYLIC FORTIFIER - Creates a denser, tougher surface without trapping moisture, reducing maintenance needs.
VERSATILE FOR EVERY PROJECT - Perfect for DIYers and pros alike, ideal for tiling, pavers, driveways, and more.

SIKA SikaLatex R is a premium acrylic-polymer concrete adhesive and fortifier that enhances Portland-cement mortar and concrete with a 500 PSI bond strength. Designed for both professionals and DIY enthusiasts, it resists freeze-thaw damage, requires no dilution, and delivers a durable, water-resistant finish that stands the test of time.

Specifications

ASIN	B000RUMZ6K
Best Sellers Rank	#5,032 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Acrylic Adhesives
Brand	SIKA
Brand Name	SIKA
Color	White
Compatible Material	Concrete
Container Type	Pail
Customer Reviews	4.6 out of 5 stars 852 Reviews
Full Cure Time	30 Days
Global Trade Identification Number	00033886001069
Included Components	1 Gallon
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Concrete Bonding Adhesive and Acrylic Fortifier
Item Weight	8.5 Pounds
Manufacturer	SIKA
Material	Concrete
Material Type	Concrete
Model	187782
Number of Pieces	1
Other Special Features of the Product	Strong
Part Number	187782
Special Feature	Strong
Specific Uses For Product	Amateur, Professional
Tensile Strength	500 Pounds Per Square Inch
UPC	033886001069
Unit Count	1.0 Count
Viscosity Level	Medium
Volume	1 Gallons
Warranty Description	SIKA warrants this product for one year from date of installation to be free from manufacturing defects and to meet the technical properties on the current Product Data
Water Resistance Level	Water Resistant

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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

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£53.55

Duties & taxes included

In stock

Sold byAmazon UKDelivered 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 UK.

Secure transaction

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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