When it comes to building a deck, choosing the right hardware is crucial in ensuring the safety and longevity of your structure. One critical item that is often overlooked is the choice between lag bolts and through bolts. In this article, we will dive into why it is essential to use through bolts when constructing a deck and how they differ from lag bolts.
First, let's differentiate between the two types. Lag bolts are screws with a coarse thread designed to be driven into wood, while through bolts are threaded rods that pass entirely through the lumber they connect. Lag bolts are commonly used in deck construction due to their ease of installation, but they have several drawbacks that make them less than ideal for use in deck framing.
One of the primary issues with lag bolts is their tendency to work themselves loose over time. This occurs due to the constant expansion and contraction of the deck frame as the temperature and humidity fluctuate, causing the wood to move. This movement can cause the lag bolts to become loose, which can create an unsafe deck structure.
Additionally, lag bolts are prone to splitting the wood when installed too close to the edge, making them less secure. In contrast, through bolts support the wood on both sides of the board, reducing the likelihood of splitting.
Another drawback of lag bolts is their susceptibility to rust and corrosion. Over time, exposure to the elements can cause lag bolts to deteriorate, which can lead to structural failure. In contrast, through bolts are typically made of corrosion-resistant materials such as stainless steel or galvanized steel, which makes them more durable and reliable.
So, why are through bolts important for deck building? The answer is simple: they provide superior strength and stability. By passing entirely through the wood and connecting it on both sides, through bolts create a strong, durable joint that can withstand the stresses of daily use and the elements.
Moreover, through bolts help distribute weight more evenly across the deck structure, reducing the risk of concentrated weight loads that can cause sagging or even collapse. By providing uniform support to the deck frame, through bolts also help prevent warping and twisting, which can cause the deck surface to become uneven.
In conclusion, when building a deck, it is crucial to choose the right hardware to ensure its safety, stability, and longevity. While lag bolts may seem like an easy solution, they have several drawbacks that make them less ideal for use in deck framing. Instead, opt for through bolts made of corrosion-resistant materials to create a strong, durable joint that will withstand the test of time. Remember, your deck is only as strong as its weakest link, so choose your hardware wisely.