Material Quantity Takeoff: Siding Boards
The first step in budgeting for hardwood siding is accurately calculating the required quantity of siding boards. Measure the total surface area of the walls you intend to cover, accounting for any openings like windows and doors. While these openings reduce the net area, it is often advisable to order a small percentage extra (typically 5-10%) to cover cuts, waste, and potential future repairs. Different siding profiles, such as tongue-and-groove or shiplap, have varying coverage per board due to their overlap, so consult specific product documentation for exact dimensions.
For example, if you have a wall that is 20 feet wide and 10 feet high, the area is 200 square feet. If you are using a siding profile that has an effective coverage width of 5 inches per board and is sold in 10-foot lengths, each board covers approximately 4.17 square feet (5 inches / 12 inches * 10 feet). To cover 200 square feet, you would need about 48 boards (200 sq ft / 4.17 sq ft/board). Adding a 10% waste factor brings the total to approximately 53 boards. Always round up to ensure you have enough material.
Accessories and Fasteners
Beyond the siding boards, a complete project budget must include all necessary accessories and fasteners. This category can encompass a wide range of items, depending on the chosen installation method and climate considerations. Common accessories include furring strips or a rainscreen system for proper ventilation and moisture management, corner trim pieces, starter strips, and any specialized profiles for transitions around windows and doors.
Fasteners are another critical component. The type of fastener depends on the siding material and profile, as well as local building practices. Options may include stainless steel screws, hidden fastening systems, or corrosion-resistant nails. Estimate the quantity based on the manufacturer's recommendations for spacing and the total linear feet of siding. Don't forget any required sealants, vapor barriers, or flashing materials needed to complete the wall assembly.
Finishes and Sealers
Hardwood siding can be left to weather naturally, developing a silver-gray patina, or it can be finished to maintain its original color and offer additional protection. If you choose to apply a finish, factor in the cost of stains, sealers, or protective oils. The quantity needed will depend on the product's coverage rate and the number of coats required. Consider the cost of application tools such as brushes, rollers, or sprayers, and any necessary cleaning supplies for preparation.
Remember that finishes often require periodic reapplication, so include this in your long-term maintenance planning, even if it's not an immediate project cost. The choice of finish can significantly impact the long-term appearance and care requirements of your hardwood siding.
Labor Costs: Professional Installation
For most homeowners, professional installation of hardwood siding is a significant budget item. Labor costs vary widely based on your location, the complexity of the project, the specific siding profile, and the installer's experience. Obtain detailed quotes from multiple qualified contractors. Ensure these quotes specify what is included (e.g., siding installation, trim work, waste removal) and what is not.
A contractor's quote should break down costs per square foot or by the total project. Factors that can increase labor costs include intricate architectural details, working at significant heights, challenging site access, and the need for specialized equipment. Clarify whether the quote includes preparation work, such as removing old siding, and final cleanup.
Contingency and Miscellaneous Expenses
No project budget is complete without a contingency fund. Unforeseen issues can arise, such as discovering hidden damage to the underlying structure once old siding is removed, unexpected material shortages, or minor design adjustments. A common recommendation is to set aside 10-15% of the total estimated project cost for contingency.
Miscellaneous expenses can also add up. These might include permit fees (if required by your local jurisdiction), dumpster rental for waste disposal, equipment rental, or even temporary protection for landscaping or adjacent structures during installation. Accounting for these smaller costs upfront prevents budget overruns later in the project.
Before you order
- Have I accurately measured all wall areas for siding, accounting for windows and doors?
- Have I added a waste factor (e.g., 5-10%) to the siding board quantity?
- Have I identified all necessary accessories (furring strips, trim, flashing, vapor barrier)?
- Have I specified the correct type and quantity of fasteners for my chosen siding and substrate?
- Is a finish planned, and have I budgeted for the product and application tools?
- Have I obtained multiple detailed labor quotes from qualified contractors?
- Does the labor quote include all aspects of installation, preparation, and cleanup?
- Have I allocated a contingency fund (10-15%) for unexpected costs?
- Have I accounted for miscellaneous expenses like permits, waste disposal, or equipment rental?
Confirm installation details, approved uses and warranty terms in the current instructions for the exact product and profile. Your installer should verify the substrate, structure and applicable project requirements.
Questions to help you decide
What is the typical waste factor for hardwood siding?
A typical waste factor for hardwood siding projects is usually between 5% and 10%. This accounts for cuts, miscuts, and potential damage during handling. For complex layouts or unusual architectural features, a slightly higher waste factor might be prudent.
Do I need a rainscreen system with hardwood siding?
While not always legally mandated, installing a rainscreen system behind hardwood siding is generally recommended. It provides a drainage plane and ventilation gap, which helps manage moisture, promotes drying, and can contribute to the longevity of both the siding and the wall assembly. Consult local building codes and manufacturer recommendations for specific requirements.
How do I get an accurate quote for materials?
To get an accurate material quote, provide your supplier with precise measurements of the wall areas, the specific hardwood species and profile you've selected, and details on any required accessories like trim or fasteners. Having a detailed takeoff plan, as outlined in this guide, will ensure your quote is as accurate as possible.
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