how to remove vulkem polyurethane sealant from expansion joints


How to Remove Vulkem Polyurethane Sealant from Expansion Joints

Expansion joints play a crucial role in ensuring the structural integrity of buildings. However, over time, the protective sealant used in these joints, such as Vulkem polyurethane sealant, may deteriorate or become damaged, requiring its removal and replacement. In this article, we will guide you through the process of safely and effectively removing Vulkem polyurethane sealant from expansion joints. Follow these step-by-step instructions to achieve the best results.

Gathering the Necessary Tools and Safety Precautions

Before starting the removal process, it is essential to gather the necessary tools and take the required safety precautions.

To remove Vulkem polyurethane sealant from expansion joints, you will need the following:

1. Utility knife or sharp blade: This will help you cut away the bulk of the sealant, making the removal process easier.

2. Heat gun or hairdryer: Applying heat to the sealant will soften it, making it easier to remove.

3. Metal scraper or putty knife: This tool will aid in scraping away the softened sealant.

4. Scrub brush or abrasive pad: Use these tools to remove any remaining sealant residue.

5. Safety goggles and gloves: Protect your eyes and hands during the removal process.

Preparing the Expansion Joints

Before directly removing the Vulkem polyurethane sealant, it is crucial to prepare the expansion joints properly.

Start by clearing the area around the expansion joints, removing any loose debris or dirt. This will allow you better access to the sealant and help prevent further damage to the joint.

Cutting and Softening the Sealant

Begin by using a utility knife or sharp blade to cut away the bulk of the sealant from the expansion joint. Be sure to use caution and avoid scratching or damaging the joint and surrounding areas.

Once the majority of the sealant has been removed, apply heat to the remaining residue using a heat gun or hairdryer. Move the heat source back and forth over the sealant, allowing the heat to penetrate and soften it. Take care not to overheat the area, as excessive heat can damage the joint or nearby materials.

Scraping and Removing the Sealant

After softening the Vulkem polyurethane sealant, use a metal scraper or putty knife to scrape away the residue gently. Work in small sections, applying consistent pressure to remove as much sealant as possible without causing any damage.

It is important to note that some residue may still remain after scraping. If this is the case, proceed to the next step to ensure a thorough clean.

Cleaning and Finalizing the Removal

To ensure a completely clean surface, use a scrub brush or abrasive pad to scrub away any remaining residue. Apply a gentle abrasive cleaner if necessary, but be cautious not to damage the expansion joint or surrounding materials.

Once you have cleaned the expansion joints, thoroughly rinse the area with water to remove any remaining residue or debris. Ensure the joints are completely dry before proceeding to reseal or replace the sealant.

Remember, removing Vulkem polyurethane sealant from expansion joints may require time and patience. Take breaks if needed, and never rush the process to avoid causing any damage.


Properly maintaining and repairing expansion joints is essential for the longevity and structural integrity of buildings. With the step-by-step instructions provided in this article, you now have the knowledge and understanding of how to remove Vulkem polyurethane sealant from expansion joints effectively. By following these guidelines, you can ensure a successful removal process and pave the way for a well-sealed and secure expansion joint system.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English