How to Remove Tile Adhesive from Concrete Floor

Introduction

Exploring Tile Adhesive Options

Thin-set Mortar

Thin-set mortar is a popular choice for tile projects because it’s easy to use and sticks well. This versatile material helps keep tiles firmly in place for a long time. Understanding thin-set mortar can really improve your tiling results, whether you’re working on floors, walls, or countertops.

Defining Thin-set Mortar

Thin-set mortar is made from a mix of cement, fine sand, and a water-retaining agent. This combination creates a sticky, strong adhesive that bonds tiles to different surfaces. Unlike traditional mortar, which is thicker, thin-set is spread in a thin layer, usually between 3/16 to 1/4 inch, making it a great choice for modern tiling jobs.

Categories of Thin-set Mortar

There are different types of thin-set mortar to meet various needs:

• Standard Thin-set: Great for most indoor areas where moisture isn’t a big issue.
• Modified Thin-set: Contains polymers for better flexibility and adhesion, perfect for spots that might move or get wet.
• Unmodified Thin-set: Doesn’t have added polymers and is often used for specific installations, like certain natural stone tiles.

Benefits of Thin-set Mortar

Choosing thin-set mortar comes with several benefits:

1. Robust Bond: Creates a strong and lasting connection between the tile and the surface.
2. Moisture Resistance: Modified thin-set mortars are great at resisting water, making them perfect for bathrooms and kitchens.
3. Flexibility: The polymers in modified versions allow for slight movement, which helps with minor shifts in the surface.
4. Versatility: Works well on many surfaces, including concrete, plywood, and even existing tiles.

Preparation and Application Process

Getting ready and applying thin-set mortar correctly is key to a successful tiling project:

• Surface Preparation: Make sure the surface is clean, dry, and free of any dirt. Fix any cracks or uneven spots before applying the mortar.
• Mixing: Follow the manufacturer’s instructions for mixing the thin-set. Using a mechanical mixer can help you get a smooth, lump-free mixture.
• Application: Use a notched trowel to spread the mortar evenly. Hold the trowel at a 45-degree angle to create ridges that help the tiles stick better.
• Setting the Tiles: Press the tiles firmly into the mortar and use spacers to keep gaps even for grout. Adjust as needed to keep everything aligned.

Drying and Curing Process

It’s important to let the thin-set mortar dry and cure properly before you grout or use the tiles. This usually takes about 24 to 48 hours, depending on the type of mortar and the conditions around it. Try not to walk on the tiles during this time to keep the bond strong.

Conclusion

Understanding thin-set mortar and how to use it correctly is essential for a strong and good-looking tile installation. By picking the right type of thin-set, preparing your surface well, and following proper application steps, you can achieve professional-quality results in your tiling projects.

Mastic Adhesive

Mastic adhesive is a popular choice for tile installations because it’s easy to use and quick to apply. This pre-mixed adhesive works great for smaller projects and specific tile types, making it a handy alternative to regular mortar. Let’s explore what mastic adhesive is and how you can use it in your tiling projects.

What is Mastic Adhesive?

Mastic adhesive is an organic, non-cement-based glue that comes ready to use in a bucket, so you don’t have to mix anything. Unlike thin-set mortar, which needs some prep work, mastic can be applied straight from the container. This makes it a favorite for DIYers and smaller jobs. It has a strong initial tack, which helps keep tiles securely in place without sagging.

Types of Mastic Adhesive

While mastic adhesives have a similar base, there are different types designed for specific uses:

• Standard Mastic: Great for most indoor wall projects, like backsplashes and shower surrounds, where moisture isn’t a big issue.
• High-Performance Mastic: Offers extra strength and moisture resistance, making it perfect for areas with more humidity or occasional water exposure.

Advantages of Using Mastic Adhesive

Using mastic adhesive has several benefits for your tiling project:

1. Convenience: Since it’s pre-mixed and ready to go, mastic saves you time and effort by removing the need for mixing.
2. Strong Initial Tack: It grips right away, keeping tiles in place without slipping, which is especially helpful for vertical installations.
3. Easy Clean-Up: You can clean mastic with water before it dries, making it easy to fix mistakes or spills.
4. Suitable for Small Projects: Perfect for quick repairs or small installations where speed and simplicity matter.

Preparation and Application

To ensure your tiling project with mastic adhesive goes smoothly, follow these preparation and application steps:

• Surface Preparation: Make sure the surface is clean, dry, and free from dust, grease, or other messes. Smooth out any bumps to create an even surface.
• Application: Use a notched trowel to spread the mastic evenly across the surface. Keep the trowel at a consistent angle to create ridges that help the adhesive grip better.
• Setting the Tiles: Press the tiles firmly into the mastic, using spacers to keep even gaps for grout. Adjust the tiles as needed to ensure they are aligned and spaced correctly.

Drying and Curing

Let the mastic adhesive set and cure according to the manufacturer’s instructions. This usually takes about 24 to 48 hours, depending on the environment and the specific product. Try not to disturb the tiles during this time to ensure a strong, lasting bond.

Conclusion

Mastic adhesive is a practical and efficient choice for many tiling projects, offering ease of use and reliable performance. By knowing the right applications, properly preparing your surface, and following the correct application techniques, you can achieve great results with mastic adhesive. Whether you’re working on a small backsplash or a bathroom wall, mastic provides a simple solution for a beautiful and durable tile installation.

Preparation Before Removal

Gathering Necessary Tools

Starting a tiling project means you need the right materials and the right tools to make everything go smoothly. Having the right tools can help you work faster and achieve a polished, professional look. Here’s a comprehensive guide to the essential tools you’ll need for your tiling project.

Essential Tools for Tiling

Before you get started, make sure you have these important tools ready:

• Notched Trowel: This tool is key for spreading thin-set mortar or mastic adhesive evenly. The notches create ridges that help the tiles stick better.
• Tile Cutter: A good tile cutter is essential for making precise cuts. You can choose from a manual tile cutter, a wet saw, or tile nippers based on what you need.
• Level: Keeping your tiles level is important for a professional look. A spirit level or laser level will help ensure everything is even.
• Tile Spacers: These small plastic pieces help keep consistent gaps between tiles for grout lines, giving a neat appearance.
• Rubber Mallet: A rubber mallet lets you gently tap tiles into place without damaging them, making sure they stick well to the adhesive.

Preparation and Measuring Tools

Getting accurate measurements and preparing the surface well are crucial for a successful tiling project:

• Measuring Tape: Use a measuring tape to check the size of the area you’re tiling, ensuring your tile cuts are spot on.
• Pencil and Straightedge: Precision matters when marking tiles for cutting. A pencil and straightedge will help you draw accurate cut lines.
• Utility Knife: A sharp utility knife is great for cutting underlayment materials or trimming any extra adhesive.
• Bucket and Sponge: A bucket is useful for mixing thin-set mortar or cleaning tools, while a sponge helps wipe away excess adhesive and grout.

Application and Finishing Tools

For a neat and lasting finish, consider these important tools:

• Grout Float: This tool is perfect for applying grout into the spaces between tiles, ensuring even coverage and filling all gaps.
• Grout Sponge: A grout sponge is used to clean the tiles and remove excess grout after you apply it, giving you a smooth finish.
• Tile Saw: For tricky cuts, especially around corners or fixtures, a tile saw provides the precision needed is great for shaping tiles.
• Knee Pads: Tiling can be hard on your knees, especially for big projects. Knee pads provide comfort and protection while you work.

Safety Equipment

Staying safe while tiling is very important:

• Safety Glasses: Protect your eyes from dust, debris, and tile shards when cutting and installing.
• Dust Mask: A dust mask is important to avoid breathing in dust and particles, especially when cutting tiles or mixing mortar.
• Gloves: Wearing gloves keeps your hands safe from sharp edges, adhesive chemicals, and rough surfaces.

Conclusion

By gathering these essential tools and making sure you’re prepared before starting your tiling project, you’re setting yourself up for success. The right tools not only make the job easier but also help you achieve a high-quality, professional finish. Happy tiling!

Prioritizing Safety Measures

When you start your tiling project, it’s super important to keep safety in mind. This helps reduce accidents and keeps your work running smoothly. Following safety protocols not only protects you but also improves the quality of your work. Here are some key safety tips to make your tiling experience safer.

Personal Protective Equipment (PPE)

Wearing the right protective gear can really help prevent injuries:

• Safety Glasses: Always wear safety glasses to protect your eyes from dust, debris, and tile pieces, especially when cutting or mixing.
• Dust Mask: Use a dust mask to keep your lungs safe, especially when cutting tiles or sanding surfaces to avoid breathing in harmful dust.
• Gloves: Put on gloves to shield your hands from sharp edges, rough materials, and chemicals in adhesives and grout.
• Knee Pads: Since tiling often means being on your knees for a while, knee pads can make it more comfortable and help prevent joint pain.
• Ear Protection: If you’re using power tools like tile saws, wear ear protection to keep your hearing safe from loud noises.

Tool Safety

Using and caring for your tools safely is key to a secure workspace:

1. Read Manuals: Get to know the manufacturer’s instructions and safety tips before using any tool to make sure you’re using it correctly.
2. Inspect Tools: Regularly check your tools for any damage or wear. Don’t use any tools that are damaged, as they can break and cause injuries.
3. Use Correct Tools: Always pick the right tool for the job. For instance, use a tile saw for detailed cuts instead of forcing a manual cutter.
4. Secure Work Area: Make sure your workspace is stable and well-lit. Secure tiles and materials to stop them from slipping or moving while you work.
5. Power Tool Safety: Ensure that power tools are grounded properly and never use them with wet hands or in damp areas.

Handling Materials Safely

Taking care of tiles and adhesives is important to avoid accidents:

• Lift Correctly: Use proper lifting techniques when handling heavy tiles or bags of mortar to avoid back strain. Always lift with your legs, not your back.
• Store Materials Properly: Keep tiles and adhesives in a dry, stable place to prevent damage and spills.
• Ventilation: Make sure your workspace is well-ventilated, especially when using adhesives or grout, to reduce inhaling fumes.
• Spill Management: Clean up spills right away to avoid slipping hazards, using the right cleaning materials for different types of spills.

Electrical Safety

Be extra careful when working with electrical tools to avoid shocks and accidents:

1. Check Cords: Before using, check power cords for any damage. Replace any frayed or damaged cords right away.
2. Use GFCI Outlets: In wet areas, plug tools into Ground Fault Circuit Interrupter (GFCI) outlets to reduce the risk of electrical shock.
3. Avoid Overloading Circuits: Don’t overload electrical outlets with too many devices. Use power strips with surge protection if needed.
4. Unplug Tools: Always unplug tools when you’re not using them or when changing attachments to prevent accidental start-ups.

General Safety Tips

Keep these general safety practices in mind to create a safe working environment:

• Keep Work Area Clean: A tidy workspace helps prevent tripping and allows for safe movement.
• Stay Hydrated: Tiling can be tough work, so drink plenty of water to stay hydrated, especially when it’s warm.
• Take Breaks: Regular breaks help you avoid fatigue, which can lead to mistakes and accidents. Rest your body and mind to stay focused.
• First Aid Kit: Keep a well-stocked first aid kit nearby to quickly handle minor injuries.

Conclusion

By following these safety measures, you can keep yourself and others safe while working on your tiling project. Safety is crucial in any home improvement task, and taking the time to follow these tips will make your experience more enjoyable and productive. Stay safe and happy tiling!

Step-by-Step Methods for Removing Tile Adhesive

Utilizing Chemical Adhesive Removers

During your tiling project, you may encounter stubborn adhesive residues that must be eliminated before laying new tiles. Chemical adhesive removers are effective solutions for breaking down these residues, ensuring a clean surface for your new tiles. This guide provides a detailed overview of using chemical adhesive removers is designed for efficient and safe use.

What Are Chemical Adhesive Removers?

These specialized products are formulated to dissolve various adhesives, including mastic and thin-set mortar. They are essential for preparing surfaces, preventing old residues from interfering with the adhesion of new materials.

Categories of Chemical Adhesive Removers

Different types of chemical adhesive removers cater to specific adhesives and surfaces:

• Solvent-Based Removers: These contain potent solvents that rapidly dissolve adhesives. While effective, they can emit strong fumes and may irritate skin.
• Biodegradable Removers: Eco-friendly options utilize natural ingredients to break down adhesives. Although safer for both users and the environment, they may require more time to work than solvent-based alternatives.
• Gel Removers: Thick, gel-like formulas adhere well to vertical surfaces, allowing them to effectively tackle stubborn residues.

Safety Considerations

Before using any chemical adhesive remover, keep these safety tips in mind:

• Read Labels: Always follow the manufacturer’s instructions and safety warnings on the product label.
• Ensure Ventilation: Maintain good airflow by opening windows and using fans to disperse fumes and avoid inhaling harmful vapors.
• Personal Protective Equipment (PPE): Equip yourself with safety glasses, gloves, and a dust mask or respirator to protect against splashes and fumes.
• Protect Surroundings: Use plastic sheeting or drop cloths to shield nearby surfaces from spills.

Application Steps

To effectively use chemical adhesive removers, follow these steps:

1. Preparation: Clear the workspace of debris and ensure the surface is dry. Protect adjacent areas with masking tape or plastic sheeting.
2. Apply Remover: Use a brush or roller to apply the adhesive remover generously, ensuring thorough coverage.
3. Allow to Sit: Let the remover sit for the time specified on the label to penetrate and dissolve the adhesive.
4. Scrape Off Residue: Once softened, use a putty knife or scraper to carefully remove the loosened adhesive without damaging the underlying surface.
5. Clean the Area: Wipe the surface with a damp cloth or sponge to eliminate any remaining residue and chemical traces.

Disposal and Clean-Up

Proper disposal and clean-up are crucial for safety:

• Dispose of Waste Properly: Adhere to local regulations for disposing of chemical waste. Avoid pouring leftover remover down drains or onto the ground.
• Clean Tools: Clean brushes and tools with appropriate solvents or soap and water, depending on the remover used. Dispose of cleaning rags responsibly.
• Store Remover Safely: Keep any leftover adhesive remover in its original container, tightly sealed, and out of reach of children and pets.

Conclusion

Using chemical adhesive removers can simplify surface preparation for surfaces for new tile installations. By selecting the right remover, adhering to safety precautions, and following proper application techniques, you can ensure a clean surface for your project. With careful execution, chemical adhesive removers become invaluable tools in your tiling arsenal.

Mechanical Methods: Scraping and Grinding

For preparing surfaces for new tile installations, mechanical methods such as scraping and grinding can serve as effective alternatives to chemical adhesive removers. These techniques are particularly useful for removing tough adhesive residues and ensuring a smooth surface. Let’s explore these mechanical methods for optimal results.

Overview of Mechanical Methods

Mechanical methods involve physically scraping or grinding away adhesive residues using specialized tools. These techniques are especially beneficial for thick adhesive layers or when chemical removers are unsuitable due to ventilation concerns or sensitive surfaces.

Required Tools and Equipment

To effectively scrape or grind away adhesive residues, gather the following tools:

• Putty Knife or Scraper: A sturdy putty knife or scraper is essential for manually removing adhesive from flat surfaces.
• Floor Scraper: For larger areas, a floor scraper with a long handle allows for efficient standing work.
• Angle Grinder: An angle grinder equipped with a diamond grinding wheel or abrasive disc can effectively tackle stubborn adhesive residues.
• Oscillating Multi-Tool: This versatile tool, equipped with a scraping attachment, is ideal for precision work in tight spaces.
• Safety Gear: Always wear safety glasses, gloves, and a dust mask to protect against debris and dust.

Preparation Steps

Before scraping or grinding, ensure you are well-prepared:

1. Clear the Area: Remove loose debris and furniture from the workspace. Cover nearby surfaces with plastic sheeting.
2. Inspect the Surface: Check for cracks or uneven spots that may need repair before adhesive removal.
3. Gather Tools: Ensure all necessary tools and safety gear are easily accessible.

Scraping Technique

Scraping is an effective method for removing adhesive residues, particularly from smaller areas:

1. Position the Scraper: Hold the scraper at a low angle to the surface to avoid damage.
2. Apply Even Pressure: Use steady pressure as you push the scraper forward in controlled strokes.
3. Work in Sections: Divide the area into manageable sections to ensure thorough removal.
4. Remove Residue: Clean the scraper blade regularly to maintain effectiveness.

Mechanical methods like scraping and grinding are effective techniques for removing adhesive residues and preparing surfaces for new tile installations. By using the right tools, following proper techniques, and taking safety precautions, you can achieve a clean and smooth surface ready for your next tiling project. Embrace these methods to enhance the quality and durability of your installations.

Effective Strategies for Adhesive Removal

Harnessing the Power of Heat Guns

Heat guns are handy tools that can make removing adhesive residues during tiling projects a breeze. By using controlled heat, these devices soften and loosen adhesives, making them easier to scrape off. This method is especially useful for those tough spots that don’t budge with regular removal techniques. Let’s explore how to use heat guns effectively for adhesive removal while keeping everything safe and efficient.

Understanding Heat Guns

A heat gun is a portable tool that blows out a focused stream of hot air at different temperatures. People often use heat guns for tasks like removing paint, shrink-wrapping, and getting rid of adhesives. They work great in tiling projects by softening old adhesives, which makes scraping and cleaning surfaces much simpler. Learning to use a heat gun properly can save you time and effort when preparing for tiling.

Necessary Equipment and Safety Precautions

Before you start your project, gather these essential tools and safety gear:

1. 1. • Heat Gun: Choose a model with adjustable temperature settings for better control while heating.
      • Scraper or Putty Knife: A sturdy scraper is key for removing softened adhesive after heating.
      • Protective Eyewear: Safety glasses are important to protect your eyes from heat and debris.
      • Heat-Resistant Gloves: Gloves will keep your hands safe from high temperatures during the process.
      • Adequate Ventilation: Make sure your workspace is well-ventilated to clear out any fumes from heating.

Preparation Steps for Adhesive Removal

Getting ready for effective adhesive removal starts with proper preparation:

1. 1. 1. Clear the Workspace: Remove any items or debris from the area. Use sheeting to protect nearby surfaces from heat and debris.
      2. Assess the Surface: Look for spots with adhesive that need to be removed. Plan how you’ll heat these areas evenly.
      3. Set Up the Heat Gun: Plug in the heat gun and start with a moderate temperature. Adjust it based on how the adhesive reacts.

Steps for Using the Heat Gun

To use the heat gun effectively for adhesive removal, follow these steps:

1. 1. 1. Apply Heat: Hold the heat gun a few inches away from the adhesive, moving it in circles or back and forth to spread the heat evenly. Don’t focus on one spot for too long to avoid damaging the surface underneath.
      2. Observe Softening: As the adhesive heats up, it will start to soften and bubble, which means it’s ready for scraping. Adjust the heat as needed to get the best softening without burning the adhesive.
      3. Remove Adhesive: Once it’s softened, use a putty knife or scraper to gently lift and remove the adhesive. Work in small sections, reheating as needed to keep it soft.
      4. Repeat as Necessary: Keep heating and scraping until all adhesive is gone. Take your time to ensure the surface is completely clean.

Cleaning Up After Removal

After removing the adhesive, follow these steps for a final clean-up:

1. 1. • Wipe the Surface: Use a damp cloth or sponge to wipe away any leftover adhesive particles and residue, making sure the surface is clean.
      • Check for Missed Areas: Look over the surface for any adhesive that might still be there. If you find any, reheat and scrape those spots to get a smooth finish.
      • Complete the Clean-Up: Tidy up your work area, disposing of adhesive scraps and cleaning materials responsibly.

Safety Considerations

Staying safe while using a heat gun is really important:

1. 1. • Avoid Overheating: Too much heat can damage surfaces and create harmful fumes. Use moderate settings and watch how the adhesive reacts.
      • Protect Surroundings: Make sure nearby items and surfaces are safe from heat exposure. Use heat-resistant barriers if needed.
      • Stay Vigilant: Always be aware of your surroundings and keep the heat gun away from anything flammable.
      • Unplug When Not in Use: Unplug the heat gun during breaks or when you finish to avoid accidental burns or fires.

Conclusion

Heat guns are fantastic tools for getting rid of adhesive residues, helping you prepare surfaces for new tile installations. By following these tips and safety guidelines, you can achieve a clean and smooth surface for your tiling project. Use the efficiency of heat guns to make your adhesive removal process easier and improve the quality of your tiling work.

Eco-friendly Adhesive Removal Solutions

Introduction

When you’re getting surfaces ready for new tile installations, it’s important to think about eco-friendly ways to remove old adhesive. These methods help protect the environment and reduce your exposure to harmful chemicals, making your workspace safer and healthier. In this section, we’ll explore different sustainable adhesive removal techniques that are effective and good for the planet.

Natural Solvent Options

Natural solvents are a great alternative to traditional chemical removers. These biodegradable options come from nature, making them safer for both users and the environment.

1. 1. • Citrus-Based Solvents: Made from citrus fruits, these solvents dissolve adhesives well and smell nice. They’re also gentler on your skin compared to chemical options.
      • Soy-Based Solvents: These non-toxic solvents are made from soybean oil and are great for removing adhesives from different surfaces without causing damage.
      • Vinegar and Baking Soda: This simple mix can soften and remove adhesive residues. It’s a gentle and safe method that works on most surfaces.

Mechanical Methods

Using mechanical methods is another eco-friendly way to remove adhesives. This approach relies on physical tools instead of chemicals, involving scraping or grinding away the residues.

1. 1. 1. Manual Scraping: Use a putty knife or scraper to manually remove adhesives. This method works well for smaller areas and doesn’t use any chemicals.
      2. Grinding: An angle grinder with a diamond wheel can effectively grind away adhesive residues, making it perfect for larger surfaces and ensuring a clean finish.
      3. Heat Application: A heat gun can soften tough adhesives, making them easier to remove. This method is chemical-free and works well for stubborn residues.

Steam Cleaning

Steam cleaning is an eco-friendly technique that uses high-temperature steam to soften and remove adhesives. This method works especially well on tiles and other hard surfaces.

1. 1. • Steam Cleaner: Use a steam cleaner with a nozzle attachment to direct steam onto the adhesive. The heat and moisture will help soften it, making removal easier.
      • Scrubbing: After steaming, use a scrub brush or sponge to wipe away the softened adhesive. You may need to repeat this process to clear away all residues.
      • Safety: Always wear protective gloves and ensure good ventilation when using a steam cleaner.

Biodegradable Adhesive Removers

There are many commercial biodegradable adhesive removers available that are designed to be eco-friendly. These products break down adhesives effectively without harming the environment.

1. 1. • Product Selection: Choose adhesive removers that are labeled as biodegradable or eco-friendly. These products are usually made from natural ingredients and are safe for various surfaces.
      • Application: Follow the instructions on the product for applying the remover. Let it sit for the recommended time to break down the adhesive properly.
      • Removal: Use a scraper or cloth to remove the softened adhesive, and clean the surface with water to get rid of any leftover residue.

Conclusion

Choosing eco-friendly adhesive removal solutions is a smart and sustainable way to prepare surfaces for new tile installations. By using natural solvents, mechanical techniques, steam cleaning, and biodegradable removers, you can effectively get rid of adhesive residues while being kind to the environment. These methods help create a clean and safe workspace, promoting health and sustainability in your tiling projects.

Conclusion

Understanding the different types of tile adhesives and how to remove them is key to your tiling success. Choosing the right adhesive, like thin-set mortar for strong bonding or mastic adhesive for easy application, can really affect how your project turns out. Each type has its own benefits, so it’s important to think about your specific needs before deciding.

Preparation is super important in the tiling process. Ensuring you have all the necessary tools tools like trowels, spacers, and safety gear can make your work easier and improve the quality of your installation. For example, using a notched trowel helps create an even layer of adhesive, while safety goggles and gloves keep you protected during both installation and removal.

When it comes to removing old adhesive, using chemical adhesive removers can really help, as they break down tough residues. You can also try using heat guns to speed things up by softening the adhesive, making it easier to scrape off. Just be careful with the heat and keep a safe distance to avoid damaging the surface underneath.

Choosing eco-friendly adhesive removal options not only helps the environment but also creates a healthier workspace by reducing exposure to harsh chemicals.

By following these tips and guidelines, you can enhance your tiling experience, ensuring your projects look great and last a long time. Enjoy your tiling journey with confidence, knowing that every smart choice you make leads to a successful and satisfying result.

FAQ

Can I use leftover adhesive for future projects?

It’s best to discard leftover adhesive since it may not work effectively after being opened or stored.

What should I do if the tiles start to lift after installation?

If tiles begin to lift, check for moisture issues or if the adhesive was applied properly. You might need to reapply adhesive or replace the tiles as needed.

How can I ensure a smooth surface after adhesive removal?

To achieve a smooth surface, clean the area thoroughly and use a scraper or sanding tool to remove any leftover residue before installing new tiles.

What are the best practices for storing tile adhesive?

When storing tile adhesive, keep it in a cool, dry place and make sure it’s tightly sealed to avoid drying out or contamination.