Composite Siding: Types, Cost, Pros & Cons Explained
"Composite siding" is one of the most confusing terms in the siding aisle. Depending on who is selling it, it can mean engineered wood, fiber cement, or a newer class of polymer and mineral composites. All of them are manufactured from a blend of materials to look like wood while lasting longer or needing less upkeep.
TheRemodelers works with licensed siding contractors to help homeowners cut through the labels. This guide explains what composite siding is, the main types, what each costs, and how they compare with vinyl and natural wood. For every material side by side, see our overview of types of siding.
Types of Composite Siding at a Glance
Type | What It Is Made Of | Installed Cost per Sq Ft | Main Strength | Main Watch-Out |
|---|
Engineered wood | Wood strands or fibers glued with resin and wax | $5 – $10 | Wood look, impact resistance, lower cost | Moisture at edges; repaint every 10–15 yrs |
Fiber cement | Cement, sand, and cellulose fibers | $6 – $13 | Fire, rot, and insect resistance | Heavy; silica dust when cut |
Polymer / mineral composites | Plastics and minerals such as fly ash, or cellular PVC | Varies widely; usually above fiber cement | Moisture resistance, stability, low upkeep | Higher cost; fewer installers |
Engineered Wood Composite
Engineered wood is the most common product sold as "composite siding." It is made by pressing wood strands or fibers together with resin and wax under heat, then adding a treatment that protects against fungal decay and termites. It looks like painted wood, resists hail well, and costs about $5 to $10 per square foot installed.
Its weakness is moisture at cut edges and seams, and it needs repainting about every 10 to 15 years. For a contractor’s view of its tradeoffs, see our engineered wood siding guide.
Fiber Cement Composite
Fiber cement is a composite of cement, sand, and wood fibers. It is non-combustible, resists rot and insects, and lasts 30 to 50 years, at about $6 to $13 per square foot installed. It is heavy and must be cut with dust control. Our fiber cement siding guide covers it in depth.
Polymer and Mineral Composites
A newer group of products blends polymers with minerals, such as fly ash, or uses cellular PVC. These boards do not absorb water the way wood does, stay dimensionally stable, take paint well, and come in lap, board-and-batten, and shiplap profiles.
Pricing varies widely by product and region, and these products usually cost more than fiber cement. Fewer installers work with them, so get several quotes and ask about each product’s installation requirements and warranty.
One thing composite siding is not: insulated vinyl. Its foam backing makes it thicker and stiffer, but it is still vinyl siding; see our insulated vinyl siding cost guide for that upgrade.
Pros of Composite Siding
A convincing wood look without natural wood’s rot and insect problems
Less maintenance than natural wood
Better impact resistance than vinyl, especially engineered wood
Fiber cement adds fire resistance; polymer composites add moisture resistance
Available in most popular profiles
Cons of Composite Siding
Costs more than vinyl
Engineered wood and fiber cement need periodic repainting
Engineered wood is vulnerable to moisture at cut edges
Fiber cement is heavy and requires silica dust control
Polymer composites can be harder to find and price
Composite vs. Vinyl and Natural Wood
Vinyl costs less, at about $4 to $8 per square foot installed, and needs almost no maintenance, but it looks less like wood up close and is more prone to cracking and warping. Natural wood, at about $8 to $15, has the most authentic look but needs repainting every 5 to 10 years.
Composites sit in between: more wood-like than vinyl, less work than wood. For the engineered wood versus fiber cement decision specifically, see LP SmartSide vs. HardiePlank.
How to Choose a Composite
Tightest composite budget: engineered wood
Fire-prone area or long-term value: fiber cement
Wet climate and lowest upkeep, if budget allows: polymer or mineral composites
Always: check the product’s warranty terms and the installer’s experience with that specific product
Questions to Ask Your Contractor
Which exact product are you quoting, and what is it made of?
How many homes have you installed it on?
What does the manufacturer require for installation, clearances, and finishing?
What does the warranty cover, and is it prorated?
How often will it need repainting?
Final Thoughts
"Composite siding" is a family, not a single product. Ask exactly what a quote includes, then compare it on cost, durability, maintenance, and warranty. For most homeowners the real choice is between engineered wood and fiber cement, with polymer composites as a premium option. For guides on every siding material, visit our siding project hub.
Want quotes on more than one composite? Home Upgrade Pros can connect you with licensed siding contractors for free, no-obligation estimates, or call (725) 745-8553.
Frequently Asked Questions
What is composite siding?
Siding manufactured from a blend of materials to look like wood. The term covers engineered wood, fiber cement, and polymer or mineral composites.
How much does composite siding cost?
Engineered wood runs about $5 to $10 per square foot installed and fiber cement about $6 to $13. Polymer and mineral composites vary widely and usually cost more than fiber cement.
Is composite siding better than vinyl?
It looks more like wood and resists impact better, but it costs more and some types need repainting. Vinyl is cheaper and lower maintenance.
How long does composite siding last?
Engineered wood lasts about 25 to 40 years and fiber cement about 30 to 50. Polymer composites vary by product, so check the warranty.
Does composite siding need to be painted?
Engineered wood and fiber cement need repainting about every 10 to 15 years. Some polymer composites come prefinished; check the product’s finish warranty.
