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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Dap Latex Concrete Sealant,Gray, 10.1OZ

Product ID: 328251470

Details

Brand
DAP
Item dimensions L x W x H
5.1 x 5.1 x
Item weight
10.1 Ounces
Material
HAWA
Style
Tube

💧100% waterproof seal

🛡️weather-resistant durability

🇺🇸Made in USA quality

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R435

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Description

🛠️ Seal Smart, Seal Strong — Don’t Let Cracks Define Your Space!

EFFORTLESS FINISH - Paintable, easy to apply, and cleans up with just water—professional results without the hassle.
SEAL WITH CONFIDENCE - Creates a fully waterproof, weatherproof barrier that stands up to the elements.
ECO CONSCIOUS FORMULA - VOC compliant and low odor for safer, cleaner use in any environment.
VERSATILE APPLICATION - Perfect for both interior and exterior concrete, mortar, and masonry surfaces.
SILICONE ENHANCED STRENGTH - Advanced silicone additives boost adhesion and flexibility for long-lasting repairs.

DAP Latex Concrete Sealant is a premium, ready-to-use gray paste designed to repair cracks and holes in concrete and masonry. Featuring silicone additives for superior adhesion and flexibility, it forms a durable, 100% waterproof, and weatherproof seal that resists gas, oil, grease, and salt. Made in the USA, this VOC-compliant sealant is suitable for both interior and exterior use, paintable, low odor, and easy to clean up with water—ideal for professional-grade concrete repairs.

Specifications

ASIN	B000H5S09G
Best Sellers Rank	#77,565 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #177 in Silicone Sealers
Brand	DAP
Brand Name	DAP
Color	Gray
Compatible Material	Concrete
Customer Reviews	4.7 out of 5 stars 3 Reviews
Global Trade Identification Number	00070798180215
Included Components	1 Tube
Item Dimensions	5.1 x 5.1 x 28.6 centimeters
Item Form	Paste
Item Type Name	concrete sealant
Item Weight	454 g
Item dimensions L x W x H	5.1 x 5.1 x 28.6 centimeters
Item weight	454 g
Manufacturer	Dap
Material	HAWA
Material Type	HAWA
Model	7079818096
Number of Items	1
Part Number	7079818096
Style	Tube
Style Name	Tube
Surface Recommendation	Exterior/Interior
UPC	070798180215
Unit Count	1 Count
Water Resistance Level	Waterproof
Water resistance level	Waterproof

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R435

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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