Glue Decking To Concrete

Can You Glue Decking To Concrete?

When it comes to performing an outdoor makeover, one of the most difficult surfaces to work with is concrete. Whether you’re looking to give your driveway or patio a facelift, there are a few materials such as quick-dry cement and decking boards that can be used for this project. But have you ever wondered if it’s possible to glue your decking boards directly onto a concrete surface?

In this blog post, we’ll explore several steps and considerations when considering gluing decking onto concrete. From preparation techniques and environmental factors to adhesives right down to applying the final touches – let’s find out how easy (or hard!) planting decking on concrete really can be!

Things to do before applying glue decking to concrete

1) Cleaning and prepping the concrete surface

Cleaning and prepping the concrete surface is the first and most important step. Using a pressure washer, take care to ensure that any dirt and grime are removed from the surface of the concrete. This will ensure that your decking boards adhere properly once you begin laying them down. Pay close attention to any cracks or holes in the concrete as these will need filling before the project can start.

It is also important to make sure that the concrete surface is dry before attempting to glue the boards down. This will help ensure that the adhesive bonds properly and securely with the surface of your decking boards.

2) Measuring & cutting the decking boards to fit the concrete surface

Before you begin gluing the decking boards to the concrete surface, it is important to measure and cut each board so that they fit snugly into the space. Careful measurement of the area will ensure that you get a neat and professional finish when laying down your decking boards.

3) Adhesive Selection

Types of adhesives suitable for decking to concrete

Types of adhesives vary depending on the climatic conditions and the type of decking material being used. For outdoor projects, it is important to select a product that is designed for exterior use and is suitable for the climate in which you live.

Some common adhesives suitable for decking to concrete include:

  1. Polyurethane glue is a popular option due to its durability and long-term waterproofing capabilities.
  2. Construction adhesive is also a suitable choice for this project, as it offers good adhesion in areas exposed to the elements.
  3. Silicone sealant is another great option and can be used to fill any gaps between boards or joints.

Pros and cons of different types of adhesives

Each type of adhesive has its pros and cons.

Pros and Cons of using Polyurethane glue for decking to concrete


  • Durable and waterproof
  • Long-term adhesion
  • Can be used in extreme weather conditions


  • Must be applied with a caulking gun
  • Not suitable for larger projects, as the glue can become weak over time
  • Can take longer to cure

Pros and Cons of using Construction Adhesive for decking to concrete


  • Easy to apply with a caulking gun
  • Good adhesion in areas exposed to the elements
  • Can be used for both interior and exterior projects


  • Not ideal for expansive projects.
  • Can become weak over time when exposed to extreme climates
  • Does not offer long-term waterproofing capabilities

Pros and Cons of using Silicone sealant for decking to concrete 


  • Applying with a caulking gun is effortless!
  • Offers good adhesion in areas exposed to the elements
  • Can be used to fill in any gaps between boards or joints


  • Not suitable for large-scale projects
  • Can become weak over time when exposed to extreme temperatures and climates
  • Its long-term waterproofing properties are unsatisfactory.

7 Steps for applying the adhesive to concrete and decking boards

Once you have decided on the adhesive you will use, it is time to begin applying it. Here is a step-by-step guide to help:

  1. Begin by preparing the surface of the concrete and ensure that it is completely clean and dry before proceeding with any further steps.
  2. Apply a generous amount of adhesive to the concrete surface.
  3. Position the decking boards in place and use a rubber mallet or hammer to firmly tap into place.
  4. Use a spirit level or straightedge to check that the boards are correctly aligned. If any adjustments need to be made, you can do this before allowing the adhesive to fully dry.
  5. Apply additional adhesive along the length of each board and use a trowel or putty knife to spread the adhesive evenly, ensuring that it is pressed into all gaps between the boards.
  6. Once the adhesive has been applied, allow it to dry completely before walking on or placing any furniture onto the decking boards.
  7. For added protection, use a sealant or waterproofing compound to protect the deck against moisture damage. This will extend the life of your deck and help keep it looking like new for longer.

Tips for ensuring a secure bond between the concrete and decking boards

  • Ensure the concrete surface is clean and free of debris before laying decking boards.
  • Invest in quality screws that are designed for outdoor use, such as galvanized or stainless steel screws. Avoid using nails or plastic anchors in your installation.
  • Apply a layer of construction adhesive on top of the concrete before laying the boards down to ensure a stronger bond.
  • Use the appropriate fasteners for the job: countersunk screws or bolts, depending on your decking material.
  • Keep a consistent spacing between each board for proper ventilation and drainage.
  • Pre-drill pilot holes in each board before securing them with fasteners; this will avoid splitting the boards.
  • Secure the end of each board to the concrete surface with a galvanized or stainless steel L-bracket for extra stability.
  • For additional protection, consider applying the sealant to your decking boards after installation to protect against moisture and insect damage.
  • Inspect your decking regularly to make sure all of the fasteners are secure and that there are no signs of wood rot or decay. Make any necessary repairs right away to avoid further damage.
  • For additional peace of mind, hire a professional contractor to inspect your deck every year for signs of wear and tear.

Following these tips will help you create a strong, secure bond between the concrete and your deck boards that will last for years to come. With proper care and maintenance, you can enjoy an outdoor space that is both safe and stylish.

Bottom Line

In conclusion, it is possible to glue decking to concrete, though not every adhesive will be strong enough or viable for the job. It’s wise to consult a professional to see which type of adhesive works best with your particular decking and concrete substrate.

With careful preparation, proper adhesive selection and correct application, you can successfully glue your decking down onto your concrete surface. If you do so successfully, you will guarantee an aesthetically pleasing result as well as increase its durability—so don’t be afraid to get your DIY hands dirty!

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