To attach a sink to a vanity, you need a glue that is:
- Watertight
- Waterproof
- Resistant to extreme temperatures
- Has antifungal properties
The glue you need to attach a sink to a vanity also depends on the type of material the sink and vanity have.
For example:
- For ceramic and laminate materials, you can use silicone caulking adhesives
- For a granite sink, you need to use an adhesive that is made to bond granite
Silicone caulking is the most commonly used adhesive to attach a sink to a countertop.
Please keep reading to discover more about the types of adhesives you can use to attach a sink to a countertop and how to do it best.
A Silicone-Based Adhesive To Attach Sink To Vanity
A silicone-based caulk adhesive is this project’s most commonly used type of glue.
Generally, you need an adhesive that not only withstands water and is resistant to humidity and extreme temperatures but one that also prevents the countertop or vanity from degrading or swelling over time.
All high-quality sink adhesives are made to deliver these results.
So, even though silicone caulking seal is the most commonly used adhesive when one needs to attach a sink to a vanity, it does not hold certain materials. And we will get into the details in a bit.
Silicone Caulk Adhesive
Silicone caulking glue and seal is formulated to be water-resistant and to provide a bond that will hold.
This type of silicone adhesive is best for laminate and ceramic materials.
But if you need to glue a different type of material, you need a different type of silicone glue.
Silicone Granite And Marble Caulk
If you want to attach a granite or marble material, you need a stronger adhesive than the regular silicone caulk seal.
Silicone Granite and Marble caulk glue are formulated to provide a strong and durable bond for these surfaces.
Advanced Silicone Caulk (or Siliconized Acrylic Caulk)
This is the type of silicone caulk used for under-mount sinks.
The bond of this silicone adhesive is very strong to support the weight of the sink. You need a proper application to ensure a lasting hold.
The Best Adhesives To Attach Bathroom Sinks: With Pros And Cons
This section will introduce the best and most recommended adhesives to use when attaching a bathroom sink to a vanity or countertop.
So let’s dive in.
- Gorilla Waterproof Caulk and Seal 100% Silicone Sealant
Gorilla Waterproof Caulk and Seal 100% silicone sealant doesn’t just seal out moisture and water but is also resistant to mold and mildew.
It dries clear. And it won’t shrink, turn yellow, or crack as time passes.
This silicone adhesive is formulated to provide flexibility.
After application, it becomes water ready in 30 minutes.
Follow these steps to attach the sink to the vanity:
- Cut the nozzle at a 45-degree angle to the bead size you prefer
- Unscrew the cap, fold, and screw on the tube nozzle
- Insert the silicone adhesive cartridge into the caulk gun
- Apply the silicone adhesive and smooth out the bead right away
This silicone-based adhesive provides a very strong bonding power.
It can be used both indoors and outdoors.
Once you use it, store it in a cool and dry place.
Pros:
- Affordable
- Waterproof and moisture resistant
- Dries clear
- Gap filling
- 30 minute water ready
- Shrink and crack proof
- Mold and mildew resistant
Cons:
- It isn’t paintable, sandable, or stainable
- Has a pretty strong odor
- It can be difficult to clean
- DAP Kwik Seal Kitchen and Bath Adhesive Caulk
This adhesive is an acrylic latex-based glue. It provides a strong and durable bond.
It offers a 100% waterproof seal.
Once it is cured, it becomes resistant to mold and mildew. Plus, it is paintable.
Pros:
- Easy to clean with water
- 100% waterproof seal
- Paintable
- Low odor
- Mold and mildew-resistant (when cured)
Cons:
- Can only be used indoors
- Long drying time
- Loctite Clear Silicone Sealant
This silicone-based adhesive provides a permanently flexible bond.
Loctite Clear Silicone Sealant doesn’t shrink, crack, or peel over time. It is resistant to impact and extreme temperatures.
It dries clear and becomes tack free in about 2 hours from application. It does require a minimum of 24 hours to cure fully.
Pros:
- Waterproof
- The bond is ideal for tile, porcelain, metal, glass, and rubber
- Resilient
- Flexible and permanent bond
- Very strong
- Versatile
Cons:
- Could be harder to squeeze out
- GE Advanced Silicone Kitchen and Bath Sealant
This silicone-based adhesive has a lot going for it.
It is 40% more flexible than Class 25 sealants and provides a bond that is 5 times stronger.
The product offers 10-year mold-free protection.
You can choose from different curing colors like clear, white, or almond.
Pros:
- 100% silicone
- 100% waterproof
- 30 minute water ready
- Crack and shrink proof
- Low odor
Cons:
- Non-paintable
- Neutral curing
- GE Paintable Kitchen and Bath Silicone Sealant
This silicone-based sealant is resistant to mold and mildew once it fully cures. It seals both dry and wet surfaces very well.
It is compatible with most materials, including ceramic, porcelain, cultured marble, glass, granite, and wood.
Pros:
- 100% waterproof
- Protection from water damage
- 30-minute water ready
- 30-minute paint ready
- Non-flammable
- 50% flexibility and joint movement
Cons:
- The primary color is white
- Not available in a squeeze tube
Frequently Asked Questions
What is the shelf life is a silicone sealant after it has been opened?
Once opened, the general shelf life of silicone sealant is about 1 year when stored properly.
How long does a silicone sealant last?
A good quality silicone sealant should last at least 20 years if applied correctly.
Conclusion
It would help if you used a silicone-based adhesive to attach a sink to a vanity.
There are silicone sealers for specific materials, so make sure you don’t choose them and use them randomly.
