What a roof replacement costs on the Front Range
Two quotes on the same house can be thousands of dollars apart, and it is almost never because one contractor is greedy. It is because the two numbers include different work. Knowing the lines that move the total is what turns three bids into a real comparison.
The lines that move the number
Roof area and pitch come first — and on the metro’s 1990s-and-newer two-story stock, the roof is bigger and steeper than the house’s square footage suggests, with valleys and dormers that add cutting, flashing and waste. Tear-off is second: code allows two layers at most, so a roof recovered once before must now be stripped completely, which adds labour and disposal. Decking is the wildcard — nobody knows how many sheets need replacing until the roof is open, which is why an honest quote prices it per sheet instead of pretending to know.
Then the items that separate a complete job from a covering swap: ice barrier membrane at the eaves (required by code in this climate), drip edge, new flashing at chimneys and walls versus reusing the old, and ventilation — the intake-and-exhaust balance that decides how hot the attic runs and how long the new shingles last at this altitude.
Why timing changes the quote
The Front Range roofing season runs roughly April to October, because shingles need sustained warmth to seal. Quotes gathered in late winter, before the season opens, consistently get more contractor attention and more schedule flexibility than quotes requested at the summer peak — same roof, same firms, different position in the queue. On subdivision streets where whole blocks reach replacement age together, quoting a season ahead of your street’s wave is the single easiest money-saver available.
Before you sign, make every bidder answer
- How many layers come off, and is disposal included?
- What is the per-sheet price for decking replacement?
- New flashing or reused flashing at chimneys and walls?
- Is eave ice barrier specified, and how far up the roof?
- What exactly does the ventilation scope include?
Next step: How long a roof actually lasts here