In this article, we will explore whether gluing decking boards is a viable option and provide some tips and considerations for doing so.
Understanding Decking Board Composition
Before delving into the glueing aspect, it is essential to understand the composition of decking boards. Most modern decking boards are made from composite materials, such as wood fibers and recycled plastic. These materials are chosen for their resistance to moisture, rot, and insect damage, as well as their low maintenance requirements.
Composite decking boards often have an outer protective layer, or shell, which enhances their durability and resistance to fading, staining, and scratching. This protective layer can pose challenges when attempting to glue boards together, as the adhesive might not bond well with this finish.
Different Types of Glue
When it comes to gluing decking boards together, not all adhesives are created equal. Some types of glue are better suited for outdoor projects, while others may work well for interior applications.
- Construction Adhesive: This type of adhesive is commonly used for outdoor projects and is designed to offer excellent bonding strength and resistance to weather and temperature fluctuations. However, it is crucial to select a construction adhesive specifically formulated for outdoor use, as they can withstand exposure to moisture, UV rays, and temperature variations.
- Polyurethane Adhesive: Polyurethane adhesive is another option that provides excellent bonding strength and weather resistance. These adhesives bond well with a variety of materials, including composite decking boards. However, it is important to note that some polyurethane adhesives may expand during the curing process, which can cause gaps or uneven joints.
Considerations Before Gluing
While gluing decking boards together might seem like a convenient option, there are several considerations to keep in mind before proceeding:
- Warranty: Most composite decking manufacturers have strict guidelines regarding the use of adhesives on their products. Using glue may void the warranty, so it is essential to check the manufacturer’s recommendations before proceeding.
- Expansion and Contraction: Composite decking boards expand and contract with changes in temperature. This natural movement can put stress on glued joints and potentially lead to separation or delamination. It is crucial to account for this movement when gluing boards together.
- Environmental Factors: Outdoor decks are exposed to various environmental elements such as rain, sun, and humidity. The chosen adhesive must be able to withstand these conditions and maintain its bond over time.
Gluing Techniques
If you decide to glue decking boards together, here are some techniques to ensure a successful result:
- Surface Preparation: Proper surface preparation is key to ensuring a strong bond. Before applying the adhesive, clean the decking boards thoroughly to remove any dirt, debris, or contaminants that may hinder adhesion.
- Clamping: Applying pressure to the glued joint enhances the bonding strength and helps to minimize gaps or unevenness. Consider using clamps or heavy objects to hold the glued boards together until the adhesive cures.
- Adhesive Application: Follow the manufacturer’s instructions for applying the adhesive. It is important to apply the adhesive evenly and avoid excess amounts that could seep out between boards.
Alternative Methods
If the idea of gluing decking boards together seems complicated or risky, there are alternative methods to achieve the desired effect:
- Hidden Fasteners: Hidden fastening systems provide a seamless and secure attachment method for decking boards. These systems use clips or brackets to secure the boards from below, eliminating the need for adhesive or visible screws. This method allows for natural expansion and contraction without compromising the deck’s structural integrity.
- Overlapping Method: Another option for extending or widening the deck surface is to overlap the boards instead of gluing them together. By overlapping the boards and securing them with screws, you can achieve a sturdy connection while allowing for natural movement.
In summary, while it is technically possible to glue decking boards together, there are several factors to consider before pursuing this option. Adhesive selection, surface preparation, and proper installation techniques are crucial for achieving a successful bond. However, alternative methods such as hidden fastening systems or overlapping boards may provide more reliable and long-lasting solutions for extending or widening a deck. Ultimately, it is important to consult the manufacturer’s guidelines and choose a method that best suits your needs and ensures the longevity of your deck.