LP SmartSide Online Calculator

Calculator Form

Project Name

Product Type

Average Wall Length

Average Wall Height

Number Of Similar Walls

Gable Base

Gable Height

Number Of Gables

Window Count

Average Window Width

Average Window Height

Door Count

Average Door Width

Average Door Height

Other Opening Area

Siding Waste Percent

Panel Width

Panel Height

Lap Board Length

Lap Exposure In Inches

Price Per Siding Piece

Corner Count

Corner Height

Starter Linear Feet

Extra Trim Linear Feet

Trim Piece Length

Trim Waste Percent

Price Per Trim Piece

Fasteners Per Square Foot

Fasteners Per Pack

Fastener Pack Price

Labor Rate Per Square Foot

Sales Tax Percent

Formula Used

Rectangular wall area = wall length × wall height × wall count.

Gable area = 0.5 × gable base × gable height × gable count.

Net siding area = gross wall area − opening area.

Adjusted siding area = net siding area × (1 + waste percentage ÷ 100).

Panel coverage = panel width × panel height.

Lap coverage = board length × exposure in inches ÷ 12.

Siding pieces = adjusted siding area ÷ coverage per piece, rounded up.

Trim pieces = adjusted trim length ÷ trim piece length, rounded up.

Total cost = siding cost + trim cost + fastener cost + labor + tax.

How To Use This Calculator

Enter a project name for your report.
Select panel siding or lap siding.
Add wall dimensions and wall count.
Add gable dimensions if your project has gables.
Enter windows, doors, and other deducted areas.
Enter product coverage, waste, trim, fasteners, and prices.
Press the calculate button.
Download the CSV or PDF report.

Example Data Table

Input	Example Value	Meaning
Wall length	40 ft	Average length of each wall section.
Wall height	9 ft	Average height from bottom to top.
Wall count	4	Number of similar rectangular walls.
Panel size	4 ft × 8 ft	Coverage used for panel calculation.
Waste	10%	Allowance for cuts and layout changes.
Trim length	16 ft	Length of each trim piece.

About This LP SmartSide Estimator

This LP SmartSide online calculator helps you plan siding, trim, waste, and budget in one clear place. It is built for early estimates. It also supports material discussions with suppliers, builders, and homeowners. The tool does not replace a field takeoff. It gives a structured starting point before ordering.

Why Accurate Inputs Matter

Siding projects depend on wall shape, openings, exposure, waste, and trim details. A small change in reveal can change the total board count. A missed window can inflate the estimate. A forgotten gable can cause a shortage. Enter each measurement carefully. Round dimensions only after you understand the site.

What The Calculator Measures

The calculator starts with rectangular wall area. It then adds triangular gable area. Next, it subtracts windows, doors, and other openings. Waste is applied after deductions. This produces the adjusted siding area. The selected product coverage converts area into pieces. Trim length is estimated separately. Fasteners and costs are also projected.

Planning With Waste

Waste covers cuts, layout changes, damaged boards, and future touch ups. Simple walls may need a small waste factor. Complex elevations often need more. Dormers, angled cuts, and many openings increase scrap. This calculator lets you choose the percentage. That makes the estimate flexible for many project types.

Cost And Report Use

The cost section combines siding pieces, trim pieces, fastener packs, tax, and labor allowance. Prices can be entered from your local quote. The result is not a final contract price. It is a planning number. Use the CSV report for spreadsheets. Use the PDF report for sharing.

Good Estimating Habits

Measure every wall from actual site dimensions. Separate large gables from regular walls. Count doors and windows before entering averages. Check product coverage printed by the supplier. Compare the calculated pieces with your installation layout. Add notes for corners, starter strips, and special trim. Review the final numbers before purchase.

Best Time To Recheck

Recheck the estimate after choosing the final profile. Recheck it again after layout changes. Supplier stock lengths may vary. Local installation practices may vary. Keep screenshots or exported reports with your quote. This habit reduces mistakes. It also makes later revisions faster and clearer for everyone involved on site.

FAQs

What does this LP SmartSide calculator estimate?

It estimates siding area, siding pieces, trim pieces, fasteners, waste, and project cost. It uses your measurements and product coverage values.

Can I use this for lap siding?

Yes. Select lap siding, then enter board length and exposure. The calculator converts exposure into square foot coverage per board.

Can I use this for panel siding?

Yes. Select panel siding, then enter panel width and height. The calculator divides adjusted siding area by panel coverage.

Does this subtract windows and doors?

Yes. It subtracts window area, door area, and any other opening area before applying the selected waste percentage.

Why is a waste percentage needed?

Waste covers cuts, mistakes, damaged pieces, layout changes, and future touch ups. Complex walls usually need a higher waste factor.

Is the final cost exact?

No. It is an estimate. Supplier prices, local labor, freight, taxes, accessories, and installation details can change the final price.

Can I download the results?

Yes. You can download a CSV report for spreadsheets. You can also download a PDF report for sharing or printing.

Should I check product coverage before ordering?

Yes. Always confirm actual product dimensions, exposure, and installation requirements from your supplier before placing an order.