I’ve looked at a lot of siding options, and Masonite siding comes up more often than people expect, especially in older homes.
If you’ve spotted it on a house and wondered what it is, you’re in the right place.In this blog, I’ll cover what Masonite siding is, what it’s made of, and the types you’ll come across.
I’ll also break down the pros, cons, and common problems. I’ve spent time researching real homeowner experiences and industry data so you don’t have to.
What Is Masonite Siding?
Masonite siding is a type of engineered wood siding that was widely used in American homes from the 1960s through the 1990s.
It’s made from compressed wood fibers and resin, giving it a wood-like look at a lower cost. Many homes still have it today.
It was once a popular choice for builders because it was affordable and easy to install, but it has since been largely replaced by fiber cement and vinyl options.
What Is Masonite Siding Made Of?
Masonite siding has a specific makeup that sets it apart from natural wood or vinyl.
Core Materials: Masonite is made from wood fibers, wax, and resin. These materials are sourced from wood waste and byproducts, making it a more cost-effective option than solid wood siding.
Manufacturing Process: The wood fibers are mixed with resin and compressed under high heat and pressure. This process creates dense, flat boards that are then cut into panels or lap siding profiles.
Key Characteristics: The finished product is smooth or textured on the surface, moisture-resistant when sealed, and paintable. However, it can swell and rot if the seal breaks down over time.
Types of Masonite Siding
Here are some masonite siding mentioned:
Regular (Smooth) Masonite Siding
Smooth Masonite siding has a flat, clean surface with no grain or texture. It was commonly used in mid-century homes and gives a simple, painted look.
It holds paint well when properly sealed but can show damage quickly if moisture gets in through cracks or gaps.
Textured Masonite Siding
Textured versions mimic the look of real wood grain. This style was popular because it gave homes a more natural appearance at a lower price.
The texture can hold more moisture over time, which increases the risk of swelling and rot if not maintained.
Painted Masonite Siding
Some Masonite panels came pre-painted from the factory. This made installation faster and reduced early maintenance.
Over time, the paint can peel or crack, which allows water in. Repainting is needed every few years to keep the siding protected.
Common Styles and Profiles
Masonite siding came in several styles to match different home designs:
- Lap siding (8-inch, 12-inch): horizontal boards that overlap, giving a classic clapboard look
- Beaded siding: features a small rounded groove along the bottom edge for added detail
- Dutch lap siding: has a curved or angled profile for a more traditional appearance
- Panel siding: large flat sheets used for a clean, vertical look on modern or barn-style homes
Pros and Cons of Masonite Siding
Here’s a quick look at both sides before you make any decisions.
Pros of Masonite Siding
- Low cost: it was one of the more affordable siding options available during its peak years
- Easy to paint: it accepts paint well and can be customized to any color
- Variety of styles: lap, panel, and beaded profiles gave homeowners real options
- Lightweight: easier to handle and install compared to heavier siding materials
Cons of Masonite Siding
- Moisture damage: it swells, warps, and rots when water gets under the surface
- High maintenance: needs regular painting and sealing to stay in good condition
- Short lifespan: many installs from the 1980s are now failing or need replacement
- No longer in production: finding matching replacement pieces is difficult
How to Identify Masonite Siding
Knowing what to look for can save you time and money, especially when buying an older home.
Visual Signs to Look For
Masonite siding often looks like painted wood but feels lighter and less dense when tapped. Look for horizontal lap boards with a slightly smooth or faintly grained surface.
It usually has a uniform, factory-like appearance. Older installs may show faded paint, slight warping, or hairline cracks along the edges.
Common Damage Areas
The bottom edges of each board are the most vulnerable. Water tends to collect there and work its way in.
Look for soft spots, bubbling paint, or swelling near the ground, around windows, and at corners. These are the first places Masonite tends to fail.
Differences From Other Materials
Masonite is lighter than fiber cement and doesn’t have the hollow sound of vinyl. It looks more like real wood than vinyl but less dense than hardwood.
If you knock on it and it feels slightly soft or spongy in areas, that’s a strong sign of water damage, something you wouldn’t feel with vinyl or fiber cement.
Common Problems With Masonite Siding
Masonite siding has some well-known issues that show up over time, especially in older homes.
- Swelling and warping: when water gets through cracks or failed paint, the wood fibers absorb moisture and the boards buckle
- Rot: long-term moisture exposure breaks down the compressed fibers, leading to soft, crumbling sections
- Paint peeling: once the paint layer fails, the board underneath is exposed directly to rain and humidity
- Mold and mildew growth: damp Masonite becomes a surface where mold builds up quickly, especially in shaded areas
- Difficulty finding replacements: since production stopped, matching the style and thickness of old panels is nearly impossible
Conclusion
If your home has Masonite siding, you now know what you’re working with. I’ve seen firsthand how quickly this material can go from fine to failing once the paint seal breaks.
It’s not a scare, it’s just something to stay on top of. Regular checks around windows, corners, and the base of your walls go a long way.
If you’re buying a home with Masonite, get a full inspection first. Have questions or dealt with this yourself? Drop a comment below, I’d love to hear your experience.
Frequently Asked Questions
Is Masonite Siding Still Being Made?
No, Masonite stopped producing residential siding in the late 1990s. You can still find it on older homes, but replacement pieces are hard to source today.
How Long Does Masonite Siding Last?
With proper maintenance, it can last 20 to 30 years. However, many installs from the 1980s are already showing significant wear, rot, and water damage.
Can I Repair Masonite Siding Instead of Replacing It?
Small damaged sections can be patched and repainted. But if the damage is widespread or the boards are rotting in multiple spots, full replacement is the smarter choice.
What Should I Replace Masonite Siding With?
Fiber cement siding is the most common replacement. It looks similar, lasts longer, and handles moisture much better than Masonite ever did.
Did Masonite Siding Have a Class Action Lawsuit?
Yes. In the 1990s, homeowners filed class action suits over premature failure and water damage. Many received settlements to help cover repair and replacement costs.
