Guides — Code, Climate & Material Estimation
Building code references, IECC climate-zone requirements, calculator support guides, and construction installation standards. Each guide is grounded in cited industry sources.
Building Code & Climate Guides
Cited references on the codes and climate-zone requirements that shape calculator defaults — IECC, state amendments, and high-wind provisions.
IECC Climate Zones
Prescriptive R-value, U-factor, and SHGC requirements by IECC climate zone.
Climate Zone 1: R-Value Requirements (2021 IECC)
Climate Zone 1 R-value minimums for ceilings, walls, floors, and slabs in Florida Keys, Hawaii, and southern Texas under the 2021 IECC.
Read guideClimate Zone 2: R-Value Requirements (2021 IECC)
Hot-humid Climate Zone 2 R-value minimums for most of Florida, the Gulf Coast, and southern Arizona under the 2021 IECC.
Read guideClimate Zone 3: R-Value Requirements (2021 IECC)
Warm Climate Zone 3 R-value minimums for the Carolinas, Georgia, central Texas, Arizona, and the Mid-South under the 2021 IECC.
Read guideClimate Zone 4: R-Value Requirements (2021 IECC)
Mixed-humid Climate Zone 4 R-value minimums for the Mid-Atlantic, Ohio Valley, Kentucky, Tennessee, and northern Texas under the 2021 IECC.
Read guideClimate Zone 5: R-Value Requirements (2021 IECC)
Cool Climate Zone 5 R-value minimums for Pennsylvania, New York, Michigan, Illinois, Iowa, and the Pacific Northwest interior under the 2021 IECC.
Read guideClimate Zone 6: R-Value Requirements (2021 IECC)
Cold Climate Zone 6 R-value minimums for Minnesota, Wisconsin, Maine, Vermont, Montana, and North Dakota under the 2021 IECC.
Read guideClimate Zone 7: R-Value Requirements (2021 IECC)
Very-cold Climate Zone 7 R-value minimums for northern Minnesota, North Dakota, and high-altitude pockets of Alaska under the 2021 IECC.
Read guideClimate Zone 8: R-Value Requirements (2021 IECC)
Subarctic Climate Zone 8 R-value minimums for most of Alaska under the 2021 IECC and Alaska Building Energy Efficiency Standard.
Read guideState & Local Codes
State and local amendments that meaningfully change construction math.
Florida HVHZ Roofing Requirements
Florida HVHZ wind-zone roofing rules: shingle ratings, fastener schedules, NOA approval, and underlayment per FBC 8th Edition (2023) and Miami-Dade County.
Read guideCalifornia Title 24 Part 6: Envelope Requirements
California Title 24 Part 6 envelope, cool-roof, and prescriptive insulation requirements by climate zone for residential — 2025 cycle effective Jan 1, 2026.
Read guideTexas Windstorm Roofing Requirements
Texas Department of Insurance Seacoast windstorm rules: shingle ratings, fastening, WPI-8 inspection, and Tier I/II requirements for the Texas coast.
Read guideMassachusetts Stretch Energy Code
Massachusetts Stretch Energy Code envelope, HERS, and electrification requirements for residential construction in opt-in municipalities.
Read guideCalculator Material Estimation Guides
Each guide answers: "How much material do I need?" — and links directly to its calculator.
Backsplash Tile Material Guide
Tile sheets, thinset, and grout quantities for ceramic, porcelain, glass, and mosaic tile.
View Calculator →Concrete Coverage Guide
How much concrete you need for slabs, footings, and post holes — in cubic yards and bags.
View Calculator →Deck Stain Coverage Guide
Stain quantities by deck size, wood condition, and product type with multi-coat guidance.
View Calculator →Drywall Material + Screw Estimation Guide
Sheets, joint compound, tape, and screw quantities per square foot of wall and ceiling area.
View Calculator →Exterior Paint Coverage Guide
Coverage by siding type — vinyl, wood, stucco, and brick — with primer and weather factors.
View Calculator →Fence Material Estimation Guide
Posts, pickets, rails, and concrete bags for wood, chain link, and split rail fence types.
View Calculator →Floor Mud / Mortar Bed Material Guide
Mortar volume, sand/cement ratios, and bag counts for shower beds and flat floor pours.
View Calculator →Flooring Waste & Coverage Guide
Square footage, waste factors by layout pattern, and box quantities for any floor type.
View Calculator →French Drain Guide: Gravel, Pipe, Fabric & Slope
How much #57 stone per foot, 4″ pipe holes-down, the burrito wrap, the 1% (⅛″/ft) slope minimum, and the 8 mistakes that clog a drain early.
Read Guide →How Many Rolls of Wallpaper Do I Need?
Bolts vs single rolls, pattern-repeat and half-drop waste, door/window deductions, and adhesive coverage — with a worked example.
Read Guide →How Much Asphalt Do I Need? Driveway Tonnage Guide
The full layer stack, HMA tonnage (~83 SF/ton at 2 in), aggregate base by soil and climate, compaction factor, and drainage slopes.
Read Guide →How Much Carpet Do I Need? Roll Width & Waste Guide
Roll-width broadloom math, waste by carpet type, pad rolls, tackless and seam tape, and waterfall vs Hollywood stair runners.
Read Guide →How Much Gravel Do I Need? Tons, Yards & Depth Guide
Cubic yards to tons, bag counts, depth by use, density by material, and the compaction factor most calculators skip.
Read Guide →How Much Rebar Do I Need? Size, Spacing & Weight
ASTM A615 bar chart and weight per foot, the +1 grid formula, lap splices, ACI cover defaults, and typical bar/spacing by project.
Read Guide →How Much Sod Do I Need? Pallets, Rolls & Prep Guide
Measure any lawn, choose the right grass, and order the correct pallets and rolls — plus ground prep, laying pattern, and watering the first weeks.
Read Guide →How Much Subfloor Do I Need? Sheets, Screws & Glue
Span rating by joist spacing, sheet counts, the 6-in/12-in fastener schedule, glue coverage, and cement board for tile prep.
Read Guide →How to Sealcoat a Driveway: Coverage, Cracks & Cost
How much sealer you need, coal-tar bans by state, the crack-width fix, two-coat technique, cure windows, failure modes, and cost ranges.
Read Guide →How to Space Board & Batten (+ Wainscoting Height)
The batten-in-every-corner spacing formula, the rule-of-thirds wainscot height, box sizing, MDF vs PVC, and the full install sequence.
Read Guide →Insulation Coverage & R-Value Guide
Bags, board feet, and R-value requirements by climate zone per 2021 IECC standards.
View Calculator →Interior Paint Coverage Guide
Gallons needed by room size, coat count, and surface texture — smooth through heavy stucco.
View Calculator →Metal Siding Guide: Gauge, Profiles, Cost & Install
Metal siding by gauge, profile, and coating. Galvalume vs aluminum, PVDF vs SMP, HVHZ fastener density per MCA, ASTM A653/A792, AAMA, and IRC R703.4.
Read Guide →Roofing Shingle Coverage Guide
Shingle quantities, bundle counts, and waste factors calculated by pitch and roof area.
View Calculator →Siding Material Calculator Guide
Coverage rates, waste factors, and trim quantities for vinyl, fiber cement, and wood siding.
View Calculator →How to Use Our Calculators
Input and output explanations only — no installation or construction theory.
Chain Link Fence Calculator (Video)
Video walkthrough showing how to estimate posts, fabric rolls, tension wire, and concrete for a chain link fence.
Drywall Calculator Tutorial
Entering room dimensions to get sheet count, joint compound, tape, and screw quantities.
Fence Calculator Tutorial
Which fence type to select, how to enter linear footage and gates, and how to read your material list.
Flooring Calculator Tutorial
How to enter square footage, select material type, and read waste-adjusted box quantities.
Paint Calculator Tutorial
Entering room dimensions, coat count, and surface texture to get accurate gallon estimates.
Roofing Calculator Tutorial
How to enter pitch, area, and overhang to get shingle bundles, underlayment rolls, and ridge caps.
Split Rail Fence Calculator (Video)
Video tutorial showing how to estimate posts and rails for a 2-rail or 3-rail split rail fence.
Wood Privacy Fence Calculator (Video)
Step-by-step video tutorial showing how to estimate posts, pickets, rails, and concrete for a wood privacy fence.
Remodel Planning Guides
Phase-by-phase planning: scope, budgets, permits, sequencing, and what projects return at resale.
How to Plan a Home Remodel (Pillar Guide)
The full lifecycle — scope, budget, permits, build order, inspections, and closeout — with DIY-vs-hire calls at every phase.
Remodel Budget Guide
The two-thirds labor rule, labor/material splits by project type, hard vs. soft costs, and how to size contingency.
Remodel Order of Operations & Timeline
Why HVAC roughs in before plumbing before electrical, critical-path handoffs, lead times, and realistic durations by project.
Remodel Permits & Code Guide
The permit decision tree plus citable IRC numbers — R303, R305, R310, R311.7, R314/R315 — and the inspection sequence.
Remodel ROI Guide (2025)
Cost vs. Value 2025 and NAR Remodeling Impact recoup percentages — and why you should remodel for use, not profit.
Construction Installation References
Technical references used to support calculator assumptions and material estimates.
Asphalt vs. Concrete Driveway
Cost, lifespan, 20-year maintenance, durability, cure time, and climate fit compared — plus why the right pick flips between the Sun Belt and Snow Belt.
Attic Ventilation Guide (IRC R806)
The 1/150 vs 1/300 NFVA rules, real NFA values by vent type, intake/exhaust balance, powered-fan cautions, and snow/hurricane/WUI overlays.
Backsplash Installation Guide
Surface prep, layout planning, thinset mixing, grouting, and sealing — based on TCNA and ANSI A108 standards.
Carpet vs. Hardwood vs. Vinyl Plank
Cost, lifespan, durability, maintenance, comfort, allergens, and resale compared across all three floors — plus a room-by-room pick for your whole home.
Cinder Block vs. Poured Concrete
Foundation walls compared on cost, lateral (backfill) strength, water resistance, insulation, and code — plus where reinforced CMU and ICF fit.
Complete Interior Painting Guide
Prep, priming, cutting in, rolling technique, and cleanup. Order of operations, common mistakes, and paint finish selection.
Concrete Strength, Weather & Additives Guide
The water-cement ratio, ACI 306/305 cold- and hot-weather rules, air entrainment for freeze-thaw, admixtures, fiber vs. wire mesh, and base compaction.
Countertop Materials Compared
Granite, quartz, quartzite, marble, soapstone, sintered, wood, and more — heat/scratch/acid resistance, sealing schedules, NSF 51 food safety, ASTM standards.
Countertop Planning: Sizes, Overhangs & Seams
Heights and depths by room, NKBA landings and seating overhangs, NSI cantilever limits, slab classes, AWI seam rules, cutouts, and NEC receptacle notes.
Dark to Light Painting Guide
How to paint over dark colors without streaks or bleed-through. Tinted primer selection, coat counts, and pro techniques for dramatic color changes.
Deck Construction Guide
IRC R507 framing, beam and joist spans per AWC DCA 6, footing sizing, ledger fastening, decking material specs, stair geometry, and railing.
Deck Stain Coverage Guide
Stain coverage rates by wood condition, stain type, and application method. Manufacturer specs for railings, vertical surfaces, and multi-coat systems.
Drywall Screw Specification Guide
GA-216 screw spacing standards, coarse vs fine thread selection, lengths by thickness, and per-sheet counts.
Drywall Types & Finish Levels (GA-214/216)
Type X and moisture-resistant board placement by code, finish levels 0–5, framing-spacing rules, control joints, and seam placement strategy.
Epoxy vs. Polyaspartic Garage Floor
Cost, lifespan, cure time, UV stability, and DIY difficulty compared — plus why the strongest floors use an epoxy base under a polyaspartic topcoat.
Floor Tile Installation Guide (TCNA)
L/360 deflection, plywood assemblies, PEI/DCOF ratings, thinset coverage, expansion joints, and a 7-day timeline.
Framing Rough Openings: Headers, Kings & Jacks
R.O. sizing rules, the IRC R602.7 header tables, NJ jack + R602.7.5 king stud counts, cripples, and the 0.70 dropped-header span reduction.
HardiePlank Installation Guide
HardieZone HZ5 vs HZ10, fastening per ESR-2290 wind tables, butt-joint detail, HardieTrim 4/4 vs 5/4, kickout flashing, warranty rules.
How to Build a Retaining Wall (DIY Guide)
Step-by-step install of a 4-ft segmental retaining wall — base prep, drainage, geogrid, cap install, and the 5 most common DIY mistakes. NCMA / IRC R404.4.
How to Install Baseboard & Trim
Cope inside corners, miter outside corners, cut, nail, scribe, caulk and finish like a pro. Covers baseboard, door and window casing, base shoe, and crown.
How to Measure Your Room
How to measure walls, ceilings, and trim for accurate paint estimates. L-shaped rooms, stairwells, angled ceilings, and door / window deductions.
How to Stain a Deck (Step-by-Step)
The full deck-staining process: check wood readiness, clean and brighten, apply without lap marks or peeling, then cure and maintain. Penetrating vs. film-forming.
Insulation R-Value Standards Guide
R-value requirements by climate zone with material comparisons for fiberglass, cellulose, and spray foam.
Interior Doors Guide
Per-door rough openings, hinge counts, locksets, casing LF, and IRC code flags for all 8 door types — pre-hung, slab, bifold, bypass, barn, pocket, French / double, and Dutch. IRC R311.2 / R302.5.1 / R308.4, ANSI/BHMA A156 series.
Landscape Material Guide
Cubic yards, tons, and bag counts for gravel, crushed stone, sand, decomposed granite, river rock, lava rock, topsoil, riprap, and boulders. ASTM D448 / AASHTO M43 / NCSA R-class.
Metal Roof vs. Asphalt Shingles
Cost, lifespan, hail/fire/wind durability, energy, noise, weight, and resale ROI compared — plus which roof wins for your climate, budget, and how long you’ll stay.
Mortar & Thinset Guide
How to pick the right ANSI mortar class (A118.1 / .4 / .11 / .15 / .3 or A136.1 mastic), choose a trowel notch, and calculate bag count. NTCA 2024/2025 Reference Manual, TCNA Handbook, ANSI A108.5/.02/.19.
Paint Sheen Guide
Choosing the right paint sheen for every room — flat, eggshell, satin, semi-gloss, and gloss — with durability, washability, and light-reflection tradeoffs.
Paver & Patio Installation Guide
Concrete, brick, bluestone, travertine, and porcelain pavers across sand-set, mortar-set, pedestal, and PICP installs. ICPI Tech Spec 2/3/4/18, ASTM C936/C902/C616.
Quartz vs. Granite Countertops
Cost, heat tolerance, sealing and maintenance, stains, food safety, appearance, and resale compared — plus the engineered-stone worker-safety issue to know.
Shiplap vs. Board and Batten
Cost, DIY difficulty, the look, and best materials by room compared for an accent wall — plus the planning math each needs and the honest trend read.
Sod vs. Seed: Which Is Better?
Cost, time to a usable lawn, seasonal timing, weeds, erosion, and effort compared — plus which grasses can only be sodded, and when a hybrid approach wins.
Stair Building Guide
IRC R311.7 stair geometry, riser/tread limits, stringer spans, handrail and baluster code, plus straight, L, U, winder, spiral, and curved configurations.
Textured Wall Painting Guide
Coverage rates and techniques for painting textured walls — knockdown, orange peel, popcorn ceilings, and heavy stucco. Extra gallons needed by texture.
Vinyl vs. Fiber Cement Siding
Cost, resale ROI, lifespan, fire resistance, maintenance, and climate fit compared — plus where LP SmartSide engineered wood fits as a third option.
When You Need Primer
When primer is actually required — and when it isn’t. Industry guidelines for new drywall, bare wood, stain blocking, color changes, and shiny surfaces.
Window Replacement Guide: Egress, U-Factor & Sizing
IRC R310 egress net clear opening, R308.4 safety glazing, IECC U-factor/SHGC by climate zone, insert vs full-frame, and NFRC labels.