When it comes to exterior cladding for your home, there are two popular synthetic options: Hardie fiber cement board and vinyl siding.
Purpose of Siding
The siding of your home serves several important functions. It protects your home from rain, snow, and extreme temperatures. It acts as a barrier against moisture, which can cause mold, mildew, and structural damage. It also helps insulate your home, improve energy efficiency and reduce heating and cooling costs. It’s also an opportunity to add your unique touch to the structure and set it apart from your neighbors. While brick and stone are popular high-end options for siding, Hardie plank and vinyl are the most popular choices on the more affordable end.
How Fiber Cement Board is Made
Fiber cement siding was first developed in the early 1900s, and later modernized in the 1970s when James Hardie replaced asbestos fibers with wood pulp.
Today, it’s made by grinding silica sand into a fine powder, mixing it with water, cement, wood pulp, and additives to form a slurry. As the water drains, the material builds up in thin layers that are pressed into dense sheets and embossed with a wood-grain texture. The boards are then cut into planks and cured in high-pressure steam autoclaves, creating a product that’s highly durable and resistant to fire, moisture, pests, and harsh weather.
How Vinyl Siding is Made
Molten PVC is forced through an extruder that shapes it into a continuous profile. While it is still warm and pliable, the siding is embossed with a textured pattern that mimics wood grain. It is then cooled and cut into 12 to 16-foot sections for ease of handling and installation.
Differences
- Appearance – Hardie Board has a more natural appearance, closely mimicking the look of wood siding. Vinyl Siding, on the other hand, has a more plastic-like appearance even though it has a wood-like pattern.
- Durability – Hardie Board is more resistant to scratches, dents, UV damage, water and fading. Vinyl Siding is less resistant to scratches and dents, especially in colder temperatures. It is more susceptible to fading and discoloration and it typically lasts around 20 years.
- DIY – Hardie Board is heavier and more difficult to handle and install. It requires specialized tools like circular saws, lap gauges, and powerful nailers. Vinyl siding is more DIY-friendly. It is lighter, easier to handle and can be cut with standard woodworking tools such as tin snips or a utility knife.
- Fire resistance – Hardie plank’s biggest advantage is its class A fire resistance. It is non-combustible and will not ignite when exposed to direct flames. Vinyl siding, on the other hand, is prone to warping or melting when exposed to heat sources, like a barbecue grill or bonfire situated too close to your exterior.
