Estimate siding squares, pieces, and cost for exterior walls.
Siding Material Comparison
Choosing the right siding involves balancing cost, durability, maintenance, and aesthetic appeal for your home’s exterior.
| Material | Cost per Sq Ft | Lifespan | Maintenance |
|---|---|---|---|
| Vinyl | $2-7 | 20-40 years | Low |
| Fiber Cement | $5-12 | 30-50 years | Low-Medium |
| Wood (Lap) | $5-15 | 15-40 years | High |
| Aluminum | $3-8 | 40+ years | Low |
| Engineered Wood | $4-9 | 20-30 years | Medium |
Frequently Asked Questions
How do I calculate how much siding I need?
Measure the total exterior wall area (height × width for each wall), subtract doors and windows, then add 10-15% for waste. Divide by the coverage area per unit of your chosen siding material.
How much does vinyl siding cost?
Vinyl siding materials cost $2-7 per square foot. Installation runs $5-12 per square foot total. Insulated vinyl costs $4-12 per square foot. Premium brands and styles are at the higher end.
What is a ‘square’ of siding?
A square of siding covers 100 square feet of wall area. This is the standard unit used by contractors for ordering and pricing siding materials, similar to roofing squares.
How long does vinyl siding last?
Quality vinyl siding lasts 20-40 years. Fiber cement siding (like HardiePlank) lasts 30-50 years. Wood siding lasts 15-40 years with regular maintenance. Metal siding can last 40+ years.
Can I install siding over existing siding?
In many cases yes, especially with vinyl over wood. However, check local building codes, inspect for rot or damage underneath, and consider that it adds thickness to walls which may affect window and door trim.
What is the best siding for my house?
Vinyl is most popular and affordable. Fiber cement offers superior durability and fire resistance. Wood provides natural beauty but requires maintenance. Metal siding is extremely durable. Choose based on budget, climate, and aesthetic preference.
How much waste should I factor for siding?
Plan for 10% waste on simple rectangular walls. Add 15% for houses with many windows, corners, and gables. Complex architectural features may require 20% waste factor.
Do I need house wrap under siding?
Yes, house wrap (like Tyvek) is recommended under all siding types. It provides a water-resistant barrier and helps with energy efficiency. It’s required by most building codes for new construction.
How many pieces of siding come in a box?
Vinyl siding typically comes in boxes of 20-24 pieces, each about 12 feet long. Coverage per box varies: standard lap siding covers about 200 sq ft per box (2 squares).
What is the R-value of insulated siding?
Insulated vinyl siding adds R-2 to R-5.5 depending on thickness. Fiber cement has minimal insulation value (R-0.5). For comparison, standard vinyl has essentially R-0 as it’s a thin shell.