kitchen sink sealants which works which not? lets know

kitchen sink sealants which works which not? i tried arladlite klear 5 150 epoxy compund next day due to water its getting out. and i tried sealant with gule gun at 350inr boss prodcuts acry seal on label it says mould resistant, non slumping but it not worked i am gonna try fevi seal saw it on youtube it may works. i have grout powder and white cement, for grout powder may need epoxy to grout. but the shop seller said no need use water. other shop seller said white cement also works but i know how white cement works. what’s the solutions.

The kitchen sink area is a very tough environment for sealants due to constant exposure to water, soap, and temperature changes. It sounds like you’ve been sold some products that are not designed for this specific application.

Table of Contents

Why Previous Attempts Failed

Araldite Klear 5 (Epoxy Compound): Araldite is a powerful adhesive, but it’s not a flexible sealant. Epoxy is a rigid material. When there is any movement in the sink or countertop (which there always is, even a tiny amount, from thermal expansion or use), the rigid epoxy can’t flex with it. This causes the seal to break, allowing water to seep underneath. Epoxy is great for bonding two rigid pieces together, but terrible for creating a flexible, waterproof barrier.
Boss Products Acry Seal (Acrylic Sealant): You are right, this product is not suitable for your sink. Acrylic sealants, or “painter’s caulk,” are great for filling small gaps around windows or trim before painting. They are water-based, and while they might be “mould resistant” in some applications, they are not waterproof and will break down with constant water exposure. The “non-slumping” property just means it won’t run when applied, which is a good feature for vertical surfaces, but irrelevant if the product itself is not waterproof.
Feviseal: Feviseal is generally a silicone sealant. This is a step in the right direction, as silicone is flexible and waterproof. However, not all silicone sealants are created equal. The effectiveness will depend on the specific product and its suitability for kitchen and bathroom environments.

The Right Solutions for Kitchen Sink Sealants

The correct solution for sealing a kitchen sink is a silicone sealant specifically designed for kitchens and bathrooms. Here’s why and what to look for:

1. Silicone Sealant (The Gold Standard)

How it Works: Silicone is highly flexible and completely waterproof. It forms a rubber-like, durable seal that can handle the constant moisture, temperature fluctuations, and vibrations of a kitchen sink.
What to Look For on the Label:
- “100% Silicone” or “Kitchen & Bath Silicone Sealant”: This is a key indicator. These products contain mildew and mould inhibitors that are essential for high-moisture areas.
- “Waterproof” or “Watertight Seal.”
- “Flexible” or “High-Flexibility.”
- Brand Names: Look for reputable brands like Dr. Fixit, Sika, or other well-known silicone sealant brands. Feviseal, if it’s a silicone product, might also work, but make sure to check the label for “kitchen and bath” and “100% silicone.”

M-Seal Feviseal Bathroom & Kitchen Gap Filler Acrylic Sealant

when you installing new kitech synk or wash basing western toilet it used to fill the gap. not said 100% water proof to prevent leakage.

ARALDITE KLEAR 10g (5 minute transparent epoxy adhesive)

will epoxy adhensive fix granite stone bottom kitchen synk leakge

Yes, a high-quality, two-part epoxy adhesive is a very effective and durable solution for fixing a granite sink leak, especially if it’s a crack in the granite itself or a detachment of the sink from the granite countertop.

The Combination Approach (A Common Professional Method)

It’s important to differentiate between two separate parts of the sink installation:

Structural Bond: The main job of holding the sink to the underside of the granite countertop is done by a structural adhesive like a strong epoxy.
Waterproof Sealant: The sealant that fills the visible gap between the top rim of the sink and the underside of the granite countertop is still best done with 100% silicone sealant, as this allows for the slight movement and provides a final waterproof barrier.

is araldite klear 5 waterproof

Aradite Klear Joints are waterproof, stress proof, Resistant to Heat, Corrosion & most chemicals.

Gorilla 100% Silicone Sealant, 2.8 oz 70grams for 1200iNR amzon affliate link here

2. Grout Powder and White Cement (Not for Your Seal)

Grout Powder: Grout is used to fill the spaces between tiles. It’s not a sealant and is porous, meaning it can absorb water. While epoxy grout exists and is waterproof, it’s designed for tile joints, not for the flexible gap between a sink and a countertop. The seller who told you to use water was correct for standard grout, but using it on your sink is a bad idea.
White Cement: This is completely wrong for your purpose. White cement will crack and crumble almost immediately due to the movement and water exposure. It’s used as a filler for specific, non-flexible applications.

Your Step-by-Step Solution

Remove the Old Sealant: Use a utility knife and a scraper to completely remove all traces of the old Araldite and acrylic sealant. This is the most important step. The new sealant will not bond properly to old, contaminated surfaces.
Clean the Surface: Thoroughly clean the gap where the sink meets the countertop. Use an all-purpose cleaner and a degreaser to remove any grease, soap residue, or old sealant particles. Dry the area completely. You can also use a rubbing alcohol to ensure it is perfectly clean and dry.
Apply the Silicone Sealant:
- Get the Right Product: Purchase a Kitchen & Bath 100% Silicone Sealant from a reputable hardware store. It will come in a tube that requires a caulk gun.
- Cut the Nozzle: Cut the nozzle at a 45-degree angle, making sure the opening is a little smaller than the gap you need to fill.
- Apply a Bead: Apply a continuous, even bead of silicone sealant into the gap.
- Tool the Seal: Immediately after applying the sealant, use a wet finger or a sealant-finishing tool to smooth out the bead. This pushes the sealant into the gap and creates a professional finish.
Allow it to Cure: This is critical. Do not let any water touch the sealant for at least 24 hours. Check the product’s label for the exact cure time. This allows the sealant to fully harden and form a strong, waterproof bond.

Following these steps with the correct product will solve your problem permanently and give you a watertight, long-lasting seal. Don’t be fooled by products that are not designed for this specific application.

Acrylic sealant, also commonly known as “painter’s caulk” or “decorators caulk,” is a type of sealant or gap-filler that is made from water-based acrylic polymers.

It is one of the most common and widely available sealants on the market, but it has specific uses and, importantly, some significant limitations.

Key Characteristics of Acrylic Sealant

Water-Based: This is its most defining characteristic. It means you can clean up any excess with just water and a rag. It also means it is not waterproof and will break down with prolonged exposure to water.
Flexible: When it cures, it forms a rubbery, flexible seal that can accommodate movement between building materials. However, it is less flexible than silicone.
Paintable: This is its primary advantage over silicone. Once cured, you can paint over acrylic sealant to match the surrounding wall or trim, making it perfect for decorative applications.
Adhesive Properties: It has a good adhesive bond to a variety of porous surfaces like wood, plaster, brick, and drywall.
Drying/Curing Time: It typically cures by evaporation of water. The curing time can vary depending on humidity and the thickness of the bead, but it’s generally a few hours for a skin to form and up to a day or more for a full cure.

Common Uses of Acrylic Sealant

Acrylic sealant is best used for applications where the seal needs to be painted or where it will not be exposed to a lot of water.

Filling gaps in trim: It’s perfect for filling the gaps between skirting boards and walls, window and door frames, and ceiling cornices before painting.
Filling cracks in walls: It can be used to fill small, non-structural cracks in plaster or drywall before painting.
Around windows and doors (Interior): Used to seal gaps in the interior of a house to prevent drafts.
Decorative purposes: Anywhere a seamless, paintable finish is needed.

Limitations (Why It Failed on Your Sink)

Not Waterproof: This is the biggest drawback. While it can resist a splash of water, constant or standing water will cause it to soften, lose its adhesion, and eventually break down. This is why it’s a terrible choice for sinks, showers, and bathtubs.
Shrinks as it Cures: As the water evaporates from the sealant, it can shrink slightly, which can sometimes lead to cracking in larger gaps.
Not for Exterior Use: Unless specifically labeled for exterior use, it should not be used outside where it would be exposed to rain and extreme weather.