Cost My Reno field library
Measure, budget, and buy with fewer surprises.
Practical guides that explain the decisions behind the calculators—from paint coverage to roof squares and remodel contingencies.
Painting
3 field guidesHow Much Paint Do I Need? A Room-by-Room Guide
Measure walls, ceilings, trim, doors, and openings without buying far too much paint.
Read guide →7 min readPaint Coverage, Primer, and Number of Coats Explained
Understand why the same gallon covers different areas on different projects.
Read guide →7 min readHow to Measure Walls, Ceilings, Doors, and Trim for Paint
A field-measurement workflow for complex rooms, openings, accent walls, and separate finishes.
Read guide →Flooring
4 field guidesFlooring Waste Percentage: 5%, 10%, or 15%?
Choose a waste allowance based on material, layout, room shape, and installation pattern.
Read guide →7 min readFlooring Cost Breakdown: Material, Prep, Labor, and Extras
Build an itemized flooring budget and compare contractor quotes fairly.
Read guide →6 min readHow to Convert Square Feet Into Flooring Boxes
Move from measured area to whole cartons while handling waste, coverage, and matching material.
Read guide →8 min readSubfloor Preparation: What to Inspect and Budget
Identify moisture, flatness, movement, and removal work before setting a flooring allowance.
Read guide →Concrete
3 field guidesConcrete Slab Thickness for Patios, Sheds, and Driveways
Understand the variables behind slab thickness before calculating concrete volume.
Read guide →7 min readHow to Order Ready-Mix Concrete Without Coming Up Short
Turn measured volume into a practical ready-mix order and delivery plan.
Read guide →6 min readCubic Feet to Cubic Yards for Concrete: The 27-Foot Rule
Understand the conversion behind concrete orders and avoid the most common thickness error.
Read guide →Drywall
2 field guides4×8 vs. 4×12 Drywall: Sheet Size and Layout Guide
Choose a sheet size by wall height, access, seam count, handling, and crew capability.
Read guide →8 min readDrywall Material List: Sheets, Screws, Tape, Compound, and Bead
Expand a sheet estimate into a complete, assembly-aware shopping checklist.
Read guide →Roofing
3 field guidesRoofing Squares and Shingle Bundles Explained
Translate roof dimensions into squares and bundles while accounting for pitch and complexity.
Read guide →7 min readRoof Replacement Budget Checklist
Compare complete roofing proposals instead of headline price per square.
Read guide →7 min readRoof Pitch Factors: Converting Footprint to Roof Area
See how rise-over-run changes surface area and when a simple factor is not enough.
Read guide →Fencing
2 field guidesFence Post Spacing, Gates, Corners, and End Posts
Plan fence quantities around actual layout points rather than dividing total length alone.
Read guide →7 min readFence Material Checklist: Panels, Posts, Gates, Concrete, and Hardware
Turn a fence-line measurement into a complete purchasing and site-preparation list.
Read guide →Decking
2 field guidesDeck Board Spacing and Layout by Material
Plan board rows, gaps, joints, picture frames, and fastening before ordering.
Read guide →8 min readDeck Board Waste: Straight, Diagonal, and Picture-Frame Layouts
Choose a waste allowance that reflects cuts, stock lengths, borders, and planned joints.
Read guide →Remodeling
2 field guidesKitchen Remodel Budget Breakdown: A Line-Item Method
Build a realistic planning budget for cabinets, counters, trades, finishes, permits, and contingency.
Read guide →8 min readKitchen Remodel Contingency: How Much and What It Covers
Set a controlled reserve for hidden conditions and documented scope changes.
Read guide →Planning
1 field guides