A well-maintained bath not only adds to the aesthetic appeal of your bathroom but also ensures longevity and functionality. One crucial step in achieving this is properly sealing your bath.
Whether you've just installed a new bath or you're looking to refresh an existing one, the process of sealing is a vital aspect of upkeep.
In this guide, we'll walk you through the essential steps and techniques to effectively seal your bath. From understanding the importance of sealing to gathering the necessary materials and mastering the application process, we've got you covered.
Say goodbye to leaks, grime build-up, and unsightly stains – by the end of this guide, you'll have a bath that not only looks stunning but also stands the test of time.
Before we get started with the step by step guide, let's take a quick look at the tools you'll need:
Sealant Gun:
A sealant gun, also known as a caulking gun, is an essential tool for applying silicone sealant. It allows for controlled and precise dispensing of the sealant.
Sanitary Silicone:
This is the specific type of silicone sealant designed for use in wet and humid environments, such as bathrooms. It provides a flexible waterproof seal and is resistant to mould and mildew.
Related Article: The Best Silicone Sealant For Showers - Ultimate Guide (this also applies for baths)
Stanley Knife or Blade:
A sharp knife or blade is necessary for cutting the nozzle of the silicone tube to the desired size. This determines the thickness of the bead of sealant.
Silicone Smoothing Tool:
This tool is used to shape and smooth the sealant after it has been applied. It helps create a clean and professional finish.
Spray Bottle of Washing-up Liquid and Water:
This mixture acts as a lubricant for smoothing the silicone sealant, preventing it from sticking to the tool or smearing along any surfaces.
Kitchen Towel or Clean/Dry Cloth:
These are used for preparing the joints and for cleaning up any spills or smudges during the application process.
Bottle of Methylated Spirit:
Methylated spirit, also known as denatured alcohol, is used for cleaning and preparing the surfaces before applying the silicone sealant.
Having these tools ready and understanding their functions will greatly facilitate the silicone application process, leading to a more successful and professional-looking finish.
How To Seal A Bath
Follow this step by step for a completely water tight, fully functioning bath.
1) Prepare The Area
If the bath has existing sealant already around the edge, this will need to be completely removed first before applying the new silicone.
See the following article for details on how to remove existing silicone sealant: How To Completely Remove Old Silicone Sealant - The Pro 4 Step Method
If its a newly installed bath, add a small amount of methylated spirit to a cloth or piece of kitchen roll, and give the joints you are sealing a wipe. Ensure the joint's are completely dirt, grit and dust free and completely dry before moving on to the next step.
Why use methylated spirit?
The methylated spirit is not only a great cleaning and degreasing solution. But the residue evaporates almost immediately. This will ensure the joints are completely dry before applying the new silicone.
2) Fill The Bath Up
Filling the bath before sealing it serves a crucial purpose in ensuring a thorough and effective application of the sealant. Here are the main reasons why it's recommended:
Weight Distribution: A bath filled with water applies pressure on the surface. This simulates real-world conditions and ensures that the sealant is applied evenly, accommodating any slight shifts or movements that may occur when the bath is in use. Without water, the bath may slightly shift once it's filled, potentially compromising the seal.
Preventing Gaps and Gaps Expansion: When you apply a sealant, it typically forms a flexible layer. Filling the bath helps the sealant adapt to the bath's contours and potential gaps that may exist. Without water, the sealant might not fully reach these areas, leaving potential weak points.
Sealant Adhesion: A filled bath provides a consistent and stable surface for the sealant to adhere to. This ensures that the sealant bonds securely to the bath material, enhancing its effectiveness in preventing water leakage.
In essence, filling the bath prior to sealing is a crucial step in achieving a long-lasting and reliable seal. It maximizes the effectiveness of the sealant, ensuring that it adheres securely and uniformly to the bath's surface, ultimately providing you with a well-protected and visually appealing bathing area.
2) Load The Silicone Gun
Load the silicone sealant cartridge into the gun and cut the nozzle at a 45-degree angle. The size of the opening will determine the thickness of the bead. Start with a small opening and enlarge it if needed.
3) Apply The Silicone Sealant
With the gun at a 45-degree angle, gently squeeze the trigger and move it steadily around the perimeter of the bath between the bath and the wall. Apply a continuous bead of sealant, ensuring full coverage. Use a consistent speed to maintain an even line.
4) Smooth The Sealant
After applying the sealant, spray the bead with the soapy water, this stops the sealant from smearing or sticking to stuff it shouldn't when tooling. Then use a silicone tool to smooth and shape the bead.
This ensures an even, professional-looking finish.
DO NOT lick your finger and smooth the sealant. The bacteria in your mouth can transfer to the sealant and cause premature mould growth. Also, it's disgusting!
5) Allow Sealant To Cure
The water should remain in the bath for a specific duration to allow for the proper curing and setting of the sealant. Generally, it's recommended to leave the water in the bath for at least 24 to 48 hours after applying the sealant.
During this period, the sealant undergoes a process of drying and curing. This ensures that it forms a strong, watertight barrier that effectively protects the bath surface. It's important to follow the manufacturer's instructions on the specific drying and curing times for the sealant you're using, as different products may have varying requirements.
Additionally, it's advisable to avoid using the bath during this curing period to prevent any potential disruptions or damage to the freshly applied sealant. Once the recommended curing time has elapsed, you can safely drain the water from the bath and resume normal use.
Related Article: How Long Does Bathroom Silicone Take To Dry
Common Mistakes When Sealing A Bath
Here are some common mistakes that people often make when applying sealant to a bath:
Insufficient Cleaning: Failing to thoroughly clean the bath surface before applying sealant can lead to poor adhesion and a less effective seal.
Not Allowing for Drying Time: Applying sealant to a damp or wet surface, or not giving the surface enough time to dry, can hinder the effectiveness of the sealant.
Neglecting to Remove Old Sealant: Applying new sealant over old, deteriorated sealant can lead to poor adhesion and an ineffective seal.
Improper Application Technique: Applying too much or too little sealant, or not achieving an even application, can result in an uneven and less effective seal.
Using the Wrong Type of Sealant: Different wall substrates (e.g., marble, porcelain, ceramic tile) require specific types of sealants. Using the wrong type can lead to poor adhesion and potential damage to the wall surface.
Using Expired or Low-Quality Sealant: Using outdated or low-quality sealant may result in a less effective seal, reducing its durability and water-resistance.
Rushing the Process: Applying sealant in a hurry without taking the necessary time for proper preparation and application can lead to subpar results.
Using Self Adhesive Bath Sealant Strips: These never work as intended so don't use them. Waste of time and money.
By being mindful of these potential pitfalls and following proper application techniques, you can ensure a successful and long-lasting seal for your bath.
Related Article: Top 6 Mistakes People Make When Applying New Silicone
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