Can this product used on new porcelain sinks?

Not sure. For best answer I would contact customer support at Miracle Sealants, 1-800-350-1901. I used product on honed granite and it worked very well.

How to recoat over existing 511

If all that's on there is 511, I've never noticed any problem putting more on later.

Is this product better for marble tile floor than the Impregnator Sealer? Would this be worthwhile as a third coat or wouldnt work?

Honestly they would both work. I'm not sure what you mean by third coat. You wouldn't want to apply this over a different product that creates the hard later over the surface. It should be used with other impregnating sealers. ***I'm not a pro, just an informed user

How long does the Sealer last?

It depends on what you are sealing, the amount of exposure to traffic, and if the product is installed inside or outside. I use the product on marble floors, inside near doorway to the outside I reseal every 4 years, outside I reseal every other year, inside I have not resealed in 10 years.

Miracle Sealants 511 Porous Plus Penetrating Sealer Resists Stains Professional

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VT96296

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Seal your space with confidence—protection that’s invisible but undeniable!

PRO GRADE DURABILITY - Outperforms competitors in independent tests for lasting protection
EFFORTLESS APPLICATION - Easy-to-use liquid formula with expansive coverage up to 4000 sq ft
INVISIBLE YET INVINCIBLE - Penetrates porous surfaces without altering natural look
VERSATILE SURFACE SAVIOR - Perfect for grout, stone, tile, marble, granite & more—indoor/outdoor
ULTIMATE MOISTURE DEFENSE - Forms a vapor-permeable shield that repels water and stains

Miracle Sealants 511 Porous Plus is a professional-grade penetrating sealer designed to protect highly porous surfaces like stone, tile, and grout. It creates an invisible, water-resistant barrier that resists stains and slips while allowing vapor to escape, preserving the natural look. With coverage up to 4000 sq ft per gallon and proven superior durability, it’s the trusted choice for both indoor and outdoor applications.

Specifications

ASIN	B00CD7NKBY
Best Sellers Rank	#265,467 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #762 in Hardware Sealers
Brand	Miracle Sealants
Brand Name	Miracle Sealants
Color	Clear
Compatible Material	Porous Materials (E.g. Tile, Stone, Grout)
Customer Reviews	4.5 out of 5 stars 122 Reviews
Item Dimensions	15 x 12 x 9 inches
Item Form	Liquid
Item Weight	6.8 Pounds
Item dimensions L x W x H	15 x 12 x 9 inches
Manufacturer	Miracle Sealants
Material	Water
Material Type	Water
Model	511PORPLS
Number of Items	1
Part Number	1873
Style	Protection
Style Name	Protection
Surface Recommendation	Tile
UPC	818508013022
Unit Count	128 Fluid Ounces
Water Resistance Level	Water Resistant

Reviews

R**.

15.08.2018

R**Y

5.03.2025

A**X

25.02.2018

C**Y

10.10.2024

D**E

16.04.2018

C**N

3.06.2024

M**.

28.06.2016

G**.

2.06.2023

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