About PropertyRoofs
PropertyRoofs answers the questions building owners and facility managers have before they replace a commercial roof: which system fits the building, how each one is installed, where it falls short, how it handles hail, and what manufacturers' warranties cover. It's written for warehouses, retail, offices and multifamily buildings.
How the pages are written
Each page is drafted from published sources: manufacturer data sheets and warranty guides, FM Approvals test standards, federal guide specifications, and Professional Roofing, the magazine of the National Roofing Contractors Association. Every claim is checked against the source's own words, every page is reviewed before it's published, and each page lists its sources and the month it was last updated. How we build these pages has the details.
What we don't do
We don't install roofs or sell materials, and no manufacturer or roofer pays to be mentioned. Manufacturers are named only where we cite their data sheets or warranty guides. We don't publish cost figures or lifespans until a source supports them.
Who we are
PropertyRoofs is published by Northwoods Ventures LLC. The site is free to use.
Found a mistake, or a data sheet that has changed? Tell us.
Other sites from Northwoods Ventures
Northwoods Ventures LLC also builds and runs these sites:
- TradeSalary: pay for the skilled trades by state and city, including what it's worth after the cost of living.
- UsedScore: which model years of a used car to avoid, based on federal complaint and recall records.
- DamageScore: send a photo of damage to your home and learn which trade you need, how serious it is, and what repairs typically cost.
- BillAverage: what electricity and natural gas cost in every state, and what heating oil costs across the Northeast.
- EnoughPizza: how many pizzas to order for a party or an office lunch.
- Baby Names of Ireland: what Irish baby names mean, how to say them, and where they come from.
- HTSLookup: every US tariff code in plain English, with the duty Customs collects on it today by country of origin.
- LakeLevelToday: today's water level for more than a thousand US lakes and reservoirs, straight from the agencies that measure them.
See the full Northwoods Ventures portfolio.
Updated October 2026.