can one put a second cost on first in the crack?

Not sure what you're asking. Applying a second coat to a crack in the stuff that's already there? If that is the question, you can, but it won't last. If you're in a rental it beats waiting for the landlord to act. If it's your property, best to do it right instead.

Is this a good option to seal small outside cracks around some windows? and then ok to mortar over this? please advise...thanks!

I have had good results using this product to seal cracks in concrete walkway & driveway but never around windows nor have I tried to mortar over it.

Does this have any benefits over real morter to fill cracks or its just easier to use?

Can be used to fill small cracks only.

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Latex Cement Patching Compound 18096

Product ID: 70274936

Details

Brand
DAP
Item dimensions L x W x H
5.1 x 5.1 x
Item weight
1.1 Pounds
Material
Silicone
Style
Compact

💧Waterproof & weatherproof seal

🛠️Durable & flexible patching

🇺🇸Made in the USA quality

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$55.20

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Description

🛠️ Seal it, forget it — durable repairs that keep you ahead of the weather!

ECO SMART FORMULA - Low VOC, non-flammable, and easy soap-and-water cleanup
PAINT READY FINISH - Smooth, paintable surface for seamless restoration
FLEXIBLE DURABILITY - Stays flexible to prevent ice and water damage over time
SEAL WITH CONFIDENCE - Waterproof, weatherproof, and crack-resistant for lasting repairs
VERSATILE APPLICATION - Perfect for concrete, mortar, masonry, and multiple surfaces inside/outside

DAP Latex Cement Patching Compound 18096 is a high-performance, latex-based sealant designed for durable, flexible, and waterproof repairs on concrete, mortar, and masonry. Made in the USA, it features silicone additives for superior adhesion and resistance to gas, oil, grease, and salt. Ideal for both interior and exterior use, it offers easy water cleanup, low VOC content, and a paintable finish, ensuring professional-grade results that protect against cracks, ice, and water damage.

Specifications

ASIN	B000H5S09G
Best Sellers Rank	668,916 in DIY & Tools ( See Top 100 in DIY & Tools ) 104 in Contact Cement
Brand	DAP
Colour	gray
Compatible Material	Concrete
Country Of Origin	USA
Global Trade Identification Number	00070798180215
Item Dimensions	5.1 x 5.1 x 28.6 centimetres
Item Form	Paste
Item Weight	1.1 Pounds
Manufacturer	Dap
Manufacturer Part Number	7079818096
Material	Silicone
Model Number	7079818096
Number of Items	1
Style Name	Compact
Surface Recommendation	Pipe, Gutter, Tile, Counter Top, Sink, Tub, Window, Door
UPC	070798180215
Unit Count	298.69 millilitre(s)
Water Resistance Level	Water Resistant

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