Case study · Home improvement · Bilingual directory
Eco Steel Roofing Canada’s guide to eco-friendly steel roofing. Contractors, styles & know-how
A bilingual directory of 4,293 Canadian roofing contractors with a cluster map, cost calculators and researched profiles of metal and steel specialists.
01 — The brief
The problem it solves
Homeowners pricing a metal roof in Canada have three questions: what it should cost, which style suits their climate, and who can install it nearby. The answers are usually spread across manufacturer brochures, lead-gen forms and review sites with scores nobody can check.
The brief: one bilingual site that pairs a nationwide contractor directory with in-depth guides and interactive cost tools, ranks specialists only on disclosed facts, and says where every piece of data came from.
02 — What we built
Features that do real work.
Steel Roofing Contractor Directory
Filter every listing by province, keyword and a metal-and-steel-specialist toggle; sort by specialism, longevity, team size or name.
Contractor Map
Clustered markers for every mapped listing, placed at city level from GeoNames coordinates and filterable by province and specialty.
Steel roof cost calculator
A planning range from footprint, pitch, profile, roofline complexity and tear-off, with each multiplier printed beside its input.
50-year cost of ownership: steel vs asphalt
A lifetime comparison that takes the visitor’s own electricity rate and lists every model assumption.
Researched profiles
150 company pages showing services, sectors and certification mentions found on each company’s own website, with the date checked.
Metal & Steel Leaders by Region
Regional rankings ordered by specialization, team size, years in business and locations, with the methodology at the top.
03 — How it's put together
Structure
Every page has an English original and a French mirror under /fr/, paired with hreflang in the sitemap: 13 province and territory pages, a Calgary metro hub with eight neighbourhood and town guides, five need-based guides, 150 company profiles, plus the directory, map, style guide and quote pages.
Under the hood
- Static HTML pages with vanilla JavaScript on Netlify; directory filtering, sorting and the map all run in the browser.
- Listings ship as a single data file of 4,293 records, each with English and French descriptions; map coordinates come from a separate GeoNames city file (CC BY 4.0).
- Schema: Organization and WebSite on the homepage, RoofingContractor with PostalAddress on profiles, Article plus FAQPage on guides, FAQPage on Resources, AboutPage on About.
- Leaflet 1.9.4 with markercluster over OpenStreetMap tiles; the shared scripts switch every UI string between English and French.
Details that matter
- No star ratings anywhere: profiles link out to Google Maps, BBB and HomeStars rather than copying their scores.
- Each researched profile names the website that was checked and the date, and labels findings as detected mentions, not endorsements.
- Calculator assumptions sit on the page, down to the conservative 15% cooling saving the 50-year model uses against a published 10–25% range.
Published methodology and dated sourcing let a directory built from public records stay useful without inventing reviews or ratings.
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