Buying guides · the answer, then the math

Decisions that need real math.

For the choices where the wrong pick costs thousands over the ownership period. We lead with the verdict, then show the 20–30 year total-cost math behind it, and link the calculators to run it for your project.

Buying guides · which option wins

ROOFING11 min read

Vinyl vs fiber cement siding: the real 30-year cost

Honest comparison of vinyl and fiber cement siding with 30-year TCO math, fire performance data, and installation guidance.

The verdict

Fiber cement lasts 50+ years to vinyl's 20–40 and wins on 30-year cost, if you're staying long enough to bank it.

USESSiding calculatorCost to install sidingRead the math →

LANDSCAPING12 min read

Composite vs pressure-treated vs cedar decking: 20-year cost breakdown

Real 20-year total cost of ownership for composite, pressure-treated, and cedar decking. Maintenance cycles, climate suitability, and when each material wins.

The verdict

Over 20 years pressure-treated ends up most expensive: its boards need replacing around year 15.

USESDeck calculatorCost to build a deckRead the math →

HVAC14 min read

Heat pump vs furnace + AC: which wins in your climate?

Climate-zone-by-zone comparison of heat pump vs gas furnace + AC. Install cost, 15-year operating cost, federal tax credits, cold-climate performance data.

The verdict

Heat pumps save $300–500/yr in zones 1–4, break even in zone 5, and lose to gas in zones 6–7.

USESHeat pump calculatorCost to replace HVACRead the math →

REFERENCE8 min read

Construction Waste Factor Reference: Every Material, One Table

Waste factor percentages for tile, flooring, drywall, roofing, siding, concrete, and more, with the reason behind each number and when to go higher or lower.

REFERENCE7 min read

Residential Building Code Limits: IRC Quick Reference Table

Every IRC dimensional limit builders check: stair risers and treads, guards, handrails, egress openings, ceiling heights, and attic access, each with its code section.

REFERENCE8 min read

Joist Span Reference: Floor, Deck, and Header Planning Spans

Conservative planning spans for floor joists, deck joists, and headers, plus the five variables that set any span and the IRC notching limits that void one.

Cost guides · what a project actually costs

Cost guides

MATERIAL + LABOR · 2026 AVERAGES

Cost to build a deck$4.4K–11.2K Cost to replace a roof$6.7K–12.5K Cost to build a fence$1.9K–4.5K Cost to paint a house$1.8K–4.4K Cost to install flooring$3–22/sf Cost to remodel a bathroom$6.6K–17.5K Cost to pour concrete$4–8/sf Cost to install siding$5.6K–17K Cost to install solar$15K–25K Cost to replace HVAC$5K–12.5K

Real ownership cost

Most comparisons stop at installed price. We run 15-, 20-, or 30-year totals including the maintenance cycles that dominate real spending.

Recommendations follow the numbers

No sponsored placements and no paid inclusion. Where a guide names a product, it is because the math or the standard points there.

Paired with tools

Every guide links the calculators you need to run the math for your own project. The guide picks the option; the tool sizes it.