Insights from CostFlowAI

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Latest Articles

Installing asphalt shingles on roof

Roofing Math: Stop Guessing Squares and Getting Burned

Roofing is sold by the "square" (100 sq ft). After 21 years on roofs, I'll show you how to calculate squares, pitch, and waste correctly.

CT
CostFlowAI Team
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Rebar grid in concrete slab

Rebar Math: How to Grid a Slab Without Wasting Steel

Rebar keeps your concrete from cracking. After 14 years of commercial foundation work, I'll show you how to calculate exactly what you need.

CT
CostFlowAI Team
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Asphalt paving crew working on driveway

Asphalt Paving: The Math Your Supplier Hopes You Get Wrong

Paving companies charge by the ton, so they're not exactly motivated to help you order less. Here's how to calculate what you actually need.

CT
CostFlowAI Team
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Painting interior walls

Paint Math: Stop Buying Gallons You Don't Need

The paint can says "covers 400 square feet." After 19 years of painting, I can tell you that number is wildly optimistic.

CT
CostFlowAI Team
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Professional taping drywall seams

Stop Wasting Money on Drywall: A Taper's Guide to Accurate Estimates

Fifteen years of hanging rock taught me that most people buy way too much drywall. Here's how to estimate what you actually need.

CT
CostFlowAI Team
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Installing attic insulation

Insulation Math: How to Calculate R-Value Without Getting Ripped Off

The insulation industry loves to confuse people with R-values and coverage charts. After 16 years, I'll show you what you actually need.

CT
CostFlowAI Team
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Excavator digging foundation

Excavation Math: Why Your Dirt Pile is Always Bigger Than You Expected

Dirt expands when you dig it. If you don't account for this, you'll have way more material to haul than you budgeted for.

CT
CostFlowAI Team
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Gravel driveway installation

Gravel Math: Why Your Driveway Needs More Stone Than You Think

Ordering gravel by the ton sounds simple until you realize tons don't convert to cubic yards the way you'd expect. Here's how to get it right.

CT
CostFlowAI Team
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Installing fence posts with concrete

Fence Material Math: Stop Buying Posts You Don't Need

Your fence supplier loves selling you extra posts "just in case." Here's how to calculate exactly what you need and save hundreds.

CT
CostFlowAI Team
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Framing studs and lumber

Framing Math: How to Count Studs Without Missing One (or Buying 50 Extra)

I've framed hundreds of houses. The hardest part isn't cutting lumber—it's figuring out exactly how much you need before you leave the yard.

CT
CostFlowAI Team
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Installing laminate flooring

Flooring Math: Why 10% Waste is a Scam (and What to Actually Add)

The flooring industry tells everyone to add 10-15% waste. After installing floors for 14 years, I can tell you that number is way off.

CT
CostFlowAI Team
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