Introduction
Hemlock lumber is a popular choice for building projects due to its unique properties. In this article, we will explore the advantages of using hemlock in construction. Whether you are in the middle of a project or trying to make an informed decision about the best type of lumber to use, this information will help you understand why hemlock may be the right choice for your needs.
Pros of Using Hemlock
1. Hemlock as a Substitute for Hardwood
One of the main advantages of using hemlock lumber is its ability to serve as a substitute for hardwood. While hardwood is often necessary for certain applications, such as trailer bedding, hemlock can be a cost-effective alternative. Although it is classified as a softwood, hemlock is surprisingly robust and offers strength similar to that of hardwood. However, it is important to exercise caution when substituting hemlock for hardwood, as there are specific cases where hardwood is still required.
2. Weight and Density
Hemlock lumber is known for its optimal weight and density. It is relatively lightweight, making it easier to handle compared to heavier hardwoods. This advantage is particularly beneficial for projects like siding, where lifting and manual work are involved. Contractors and builders appreciate the lighter weight of hemlock, as it simplifies the construction process.
3. Porosity and Stain Absorption
Another notable characteristic of hemlock lumber is its porosity. When freshly cut, hemlock is heavy and absorbs moisture easily. However, once it is dried, it becomes significantly lighter. The porous nature of hemlock allows it to readily absorb stains and paints, resulting in a beautiful finished product. This quality makes it an excellent choice if you want to achieve a stained or painted finish on your project.
4. Aesthetics and Aging
Hemlock lumber has a distinctive appearance that many people find appealing. Unlike pine, which tends to turn gray over time, hemlock develops a reddish-brown hue as it ages. This unique color lends an attractive warmth to the wood, giving it a timeless quality. The older the hemlock, the more pronounced this yellow tint becomes, resembling the appearance of stained wood. The aesthetic appeal of hemlock makes it a desirable choice for various construction projects.
5. Bug and Rot Resistance
One of the primary reasons why people choose hemlock lumber is its resistance to bugs and rot. Hemlock is known for its durability and is frequently used for siding on buildings. Many century-old barns still boast their original hemlock siding, which is a testament to its longevity. While some individuals may dispute the insect and rot-resistant properties of hemlock, it is important to consider the impact of climate. In extremely damp or swampy environments, all types of wood will eventually degrade. However, compared to other wood species, hemlock has demonstrated a remarkable ability to withstand the test of time.
Cons of Using Hemlock
Despite its numerous advantages, hemlock lumber does have some drawbacks. It is essential to be aware of these limitations when considering hemlock for your building projects.
1. Porosity and Weakness
As mentioned earlier, hemlock’s porosity can be both an advantage and a disadvantage. While it enables the wood to absorb stains easily, it also makes it weaker compared to other hardwoods. Hemlock is not recommended for applications that require extreme hardness, such as furniture construction. It may not be suitable for projects where strength and solidity are crucial.
2. Shakes and Cracks
Hemlock lumber is known for its propensity to develop shakes or cracks. Shakes refer to deep cracks that compromise the integrity of the wood. Although millers cannot control this natural characteristic, it affects the quality of the lumber. When cutting into a log, cracks may become apparent, indicating potential weaknesses that will worsen as the wood dries out. It is essential to avoid using hemlock boards with visible cracks, as they are more likely to break under stress.
3. Knots
Hemlock trees have many branches, resulting in an abundance of knots in the wood. Knots are weak points in the lumber and can sometimes compromise its strength. However, for applications such as siding, knots are generally not of major concern. Avoid using boards with knots that extend entirely across the wood, as these are likely to break. While there are more knots in hemlock compared to hardwood, they usually do not significantly impact its usability in many construction projects.
4. Limited Shrinkage
Hemlock has minimal shrinkage compared to other wood species. This characteristic is due to hemlock trees being evergreens. While there is some shrinkage, it is less significant when compared to pine, for example. Understanding the shrinkage potential of hemlock is crucial when planning and designing your project.
Conclusion
In summary, hemlock lumber offers numerous advantages for building projects. Its affordability as a hardwood substitute, optimal weight and density, porosity for stain absorption, aesthetic appeal, and resistance to bugs and rot make it an attractive choice for many builders and contractors. However, it is important to consider its weaknesses, such as its porosity, tendency to develop shakes and cracks, and the presence of knots. By weighing these pros and cons, you can make an informed decision about whether hemlock is the right lumber choice for your specific project.
