Guide on a Free Tool
# Roofing Calculator Guide: Fast, Transparent Squares, Pitch & Bundles
Date
Oct 1, 2025
Author
LumioForge Estimating & Web Automation Team
LumioForge Roofing Calculator
Goal: Get a working, tailored-to-you, branded roofing price calculator on your website in ~15 minutes - no coding. If you later want more advanced calculators or hands-off integrations, you can Claim My Spot and we’ll do it with you end-to-end.
Why contractors love it (tailored to YOU)
Your exact pricing, your exact outputs. Enter the same unit rates and fees you already use (labor $/square, material $/square, tear-off/layer, disposal, underlayment, permit, O&P, sales tax). The widget then produces a range that’s within the same ballpark you quote in person - without you doing the math on the phone.
Personalised variables for pitch, complexity, stories, access, waste, and region so estimates reflect your jobs, not averages.
Brand it in seconds (logo, color, CTA text) and send leads to email or your CRM via webhook.
What this calculator does
Gives visitors an instant roof estimate range (Low / Most-Likely / High) with per-square pricing based on size, material, pitch, and other basics.
Designed to embed on any website (Wix, Squarespace, WordPress, Webflow, Shopify, etc.).
What you need before you start
Your company logo (optional).
A brand color (HEX, e.g.
#4F1AD6).(Optional) Where leads should go: email or a webhook URL (Zapier/Make/n8n/CRM).
Tip: You can launch without a webhook - wire it later when ready.
Quick Start (copy-paste)
Open the Roofing Calculator Builder and set your defaults (material pricing, labor, waste %, etc.).
Click Copy widget code - you’ll get one snippet (a
<div>plus a<script type="module">…</script>).Paste that code into your site using your platform’s embed option (see “Where to paste the code”).
Publish and test on a live page (some editors don’t run scripts inside the editor preview).
Use the tool: Roofing Calculator Builder
Tailor it to YOUR pricing (exact-variable mapping)
Set these to your real numbers so the widget mirrors your quotes:
Materials per square: asphalt / metal / tile / slate (your actual buy + expected markup).
Labor per square: your field labor for removal + install (baseline).
Tear-off per layer: add cost per existing layer (1-3 typical).
Disposal per square: dumpster/haul-off cost.
Underlayment per square: felt/synthetic/ice barrier allowance.
Waste factor %: typical 10-20% (adjust for cut-up roofs).
Permit fees ($): flat, if your AHJ requires it.
Overhead & Profit % (O&P): your standard margin (e.g., 10-30%+).
Sales tax %: your local rate if applicable.
Pitch multiplier: low / medium / steep / very-steep (harder roofs cost more).
Complexity multiplier: simple / moderate / complex (valleys, dormers, penetrations).
Stories & accessibility: extra handling, staging, or crane.
Region multiplier: slight adjustment by ZIP (material/labor variance).
Accuracy band: the range tightens as customers add ZIP, pitch, layers, stories.
5-minute calibration:
Take a recent job, enter the same scope and unit costs, compare the Most-Likely total to your invoice, then adjust waste/pitch/complexity or unit rates until you’re within ±5-10%. Copy the snippet and go live.
Where to paste the code (popular platforms)
Paste the snippet in the page content (Embed/HTML/Custom block) - no
<head>access required. If your platform offers site-wide injection, still place an Embed/HTML block on the specific page so the calculator appears in-flow.
Wix
Page-level: Editor → Add Elements → Embed Code → Popular Embeds → Embed HTML → paste.
Site-wide (optional): Dashboard → Settings → Advanced → Custom Code → + Add Custom Code → choose pages & location.
Squarespace (7.1)
Page-level: Edit page → Add Block → Code → paste → Save.
Site-wide (optional): Settings → Website Tools → Code Injection (Header/Footer). If injecting JavaScript there, wrap it in
<script>…</script>. Some content doesn’t run in the editor - check the live page.
WordPress (Gutenberg)
Page-level: Add block → Custom HTML → paste → Update/Publish.
If
<script>gets stripped for non-admins, paste with an Admin account or enableunfiltered_htmlfor trusted roles (multisite: only Super Admins).
Webflow
Page-level: Add panel → Custom code embed → paste → Save.
Don’t include
<html>,<head>, or<body>- paste only the snippet.
Shopify (Online Store 2.0)
Simple: Theme Editor → add a Custom Liquid section/block → paste → Save & publish.
Advanced: Use sections/blocks to position or reuse it across templates.
What visitors will see (and why it converts)
Transparent estimate range (Low / Most-Likely / High)
Per-square price and estimated squares
Material options: asphalt / metal / tile / slate
Accuracy improves as they add ZIP, pitch, layers, and stories
Lead form (branded) so you can contact them right away
Keep this link handy to update pricing or branding later: Roofing Calculator Builder
Production checklist
Tune pricing to your real costs (labor, material, permits, waste).
Brand it (color, logo, CTA) to match your site.
Place the code exactly where you want it (Embed/HTML/Custom Liquid).
Publish and test on mobile + desktop.
Submit a test lead and confirm email/webhook delivery.
Re-copy the code if you update settings later.
Troubleshooting
“I don’t see it in the editor.” Some editors don’t run scripts while editing - check the live page/preview.
“WordPress stripped my
<script>.” Use an Admin account or enableunfiltered_htmlfor trusted roles (security-sensitive).“Shopify doesn’t show Custom Liquid.” Use a theme/section that supports Custom Liquid/HTML, or paste into an existing section.
“Webhook didn’t fire.” Test with a public endpoint (Zapier/Make), accept POST JSON, and allow CORS for your domain.
Safe note to place under your calculator
This is an instant at-home estimate. Final pricing depends on on-site inspection, access, code/permit requirements, and material availability. We’ll confirm everything during our visit.
Like this? More guides you’ll find useful
A/B testing your roofing site (Framer + GA4) - how to test headlines, forms, and CTAs properly.
Premium roofing web design playbook - proof-first layout, speed wins, and accessibility basics.
Accessibility (WCAG 2.2) - what’s new and how to meet keyboard and mobile targets.
And of course, here’s the tool again when you need it: Roofing Calculator Builder
Want something more advanced?
Need multi-system comparisons, photos/attachments, CRM routing, deposits, or complex rules (insurance scopes, overlays, add-ons)? We’ll tailor it and integrate it for you. Claim My Spot and we’ll set it up end-to-end.
