The successful installing threshold on concrete often relies on proper surface preparation; for this, a reliable concrete grinder is essential. Schluter Systems provides various threshold profiles designed for different applications. Understanding the concrete’s compressive strength, a key property often verified by civil engineers, ensures long-term durability. Finally, the ADA (Americans with Disabilities Act) sets standards for threshold height, impacting accessibility when installing threshold on concrete.
Image taken from the YouTube channel Bryan Hartsock , from the video titled Installing a Door Threshold (with Concrete Underneath) .
Installing Threshold on Concrete: Pro Tips You Need to Know!
This guide provides a comprehensive look at installing a threshold on a concrete surface, ensuring a proper seal and professional finish. The process, while relatively straightforward, requires careful planning and execution. We’ll cover everything from preparing the surface to choosing the right adhesive and ensuring a weatherproof installation.
Understanding Thresholds and Their Purpose
Thresholds serve several vital functions when installed correctly.
- Weather Sealing: They create a barrier against water, wind, and insects, preventing drafts and potential water damage.
- Transitioning Flooring: They smoothly connect different flooring types or levels, improving safety and aesthetics.
- Aesthetic Appeal: Thresholds offer a finished look to doorways and other transitions, enhancing the overall appearance of the space.
Preparing for the Installation: A Crucial First Step
Proper preparation is key to successful installing threshold on concrete. Rushing this phase will inevitably lead to problems later on.
Assessing the Existing Concrete Surface
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Cleanliness: The concrete must be completely free of dirt, debris, grease, paint, or old adhesive. Use a scraper, wire brush, and appropriate cleaning solution (e.g., degreaser) to achieve a pristine surface.
- For particularly stubborn residues, consider using a concrete etching solution according to the manufacturer’s instructions. Always wear appropriate safety gear when handling chemicals.
- Levelness: Check the concrete surface with a level. Minor imperfections are acceptable, but significant dips or humps must be addressed.
Addressing Imperfections in the Concrete
- Low Spots: Use a concrete patching compound to fill any low spots or cracks. Allow the compound to dry completely according to the manufacturer’s instructions, and then sand it smooth and level.
- High Spots: Grind down any high spots using a concrete grinder or hand-held grinder with a concrete grinding wheel. Be sure to wear safety glasses and a dust mask during this process.
Selecting the Right Threshold
Choosing the appropriate threshold is critical for functionality and aesthetics. Consider these factors:
- Material: Common materials include aluminum, wood, vinyl, and composite. Consider durability, weather resistance, and aesthetic appeal.
- Height and Width: Select a threshold that effectively bridges the gap between the flooring surfaces and accommodates the door’s sweep. Accurately measure the space to ensure a proper fit.
- Style: Choose a style that complements the surrounding décor and flooring. Options include standard thresholds, ADA-compliant thresholds (for accessibility), and decorative thresholds.
The Installation Process: A Step-by-Step Guide
Gathering Your Tools and Materials
Before you begin, make sure you have all the necessary tools and materials readily available. This will save you time and frustration.
| Tool/Material | Purpose |
|---|---|
| Measuring Tape | Accurately measuring the space and threshold. |
| Saw (Hacksaw/Miter Saw) | Cutting the threshold to the correct length. |
| Caulk Gun | Applying adhesive/sealant. |
| Construction Adhesive | Bonding the threshold to the concrete. (Choose a high-quality adhesive formulated for concrete). |
| Level | Ensuring the threshold is level. |
| Drill (Optional) | Pre-drilling holes for screws (if using). |
| Screws (Optional) | Securing the threshold in addition to adhesive (for added stability). |
| Hammer (Optional) | Tapping the threshold into place (use with caution). |
| Safety Glasses | Protecting your eyes. |
| Dust Mask | Protecting your lungs from dust. |
| Cleaning Supplies | Cleaning the concrete surface. |
Cutting the Threshold to Size
- Accurately measure the width of the doorway or opening where the threshold will be installed.
- Transfer the measurement to the threshold, using a pencil or marker to mark the cutting line.
- Using a saw appropriate for the threshold material (e.g., a hacksaw for metal, a miter saw for wood), carefully cut the threshold to the correct length. Ensure the cut is straight and clean.
Applying Adhesive and Securing the Threshold
- Apply Adhesive: Apply a generous bead of construction adhesive to the cleaned concrete surface where the threshold will be positioned. Follow the adhesive manufacturer’s instructions regarding application and curing time.
- Position the Threshold: Carefully position the threshold onto the adhesive, ensuring it is properly aligned and level.
- Secure the Threshold (Optional): If desired, pre-drill pilot holes through the threshold and into the concrete using a masonry drill bit. Then, use concrete screws to secure the threshold in place for added stability.
- Clean Up Excess Adhesive: Immediately wipe away any excess adhesive with a damp cloth.
Caulking and Sealing for a Weatherproof Finish
- Apply Caulk: Apply a bead of exterior-grade caulk along the edges of the threshold where it meets the flooring and concrete. This will create a watertight seal and prevent drafts.
- Smooth the Caulk: Use a wet finger or a caulking tool to smooth the caulk bead and create a neat, professional finish.
- Allow to Cure: Allow the caulk and adhesive to cure completely according to the manufacturer’s instructions before subjecting the threshold to heavy traffic.
Post-Installation Care
- Avoid Heavy Traffic: Avoid heavy traffic on the threshold for at least 24 hours after installation to allow the adhesive and caulk to fully cure.
- Regular Cleaning: Clean the threshold regularly with a mild soap and water solution to remove dirt and debris.
- Inspect Periodically: Periodically inspect the threshold for signs of damage or wear and tear. Repair any cracks or gaps in the caulk or adhesive as needed.
Concrete Threshold Installation FAQs
Here are some frequently asked questions about installing thresholds on concrete, providing further clarity and tips for a successful project.
What’s the best adhesive for installing a threshold on concrete?
Construction adhesive specifically designed for concrete is your best bet. Look for products labeled "concrete adhesive" or "masonry adhesive." These provide a strong, durable bond that can withstand foot traffic and weather conditions. Make sure the concrete surface is clean and dry before application.
How do I ensure a level threshold when installing on concrete?
A self-leveling compound can correct minor imperfections in the concrete surface before installing threshold. This helps ensure even contact and prevents rocking. For larger discrepancies, consider using shims underneath the threshold, secured with adhesive.
What type of threshold is suitable for concrete?
Aluminum thresholds are very popular for concrete applications due to their durability and resistance to corrosion. You can also use stone thresholds as well. Just remember to choose one compatible with both interior and exterior use, especially if it’s exposed to the elements. Make sure the material thickness and width are appropriate for the gap it needs to bridge.
What prep work is crucial before installing the threshold on concrete?
Thorough cleaning is essential! Remove any debris, dirt, or old adhesive residue. If the concrete is sealed, you may need to roughen it up with sandpaper or a grinder to improve adhesion. Make sure you test the surface with water to make sure it absorbs instead of beads before putting any adhesive on the surface.
Alright, now you’re armed with some serious knowledge for installing threshold on concrete! Get out there, tackle that project, and make sure that threshold is rock solid. You got this!