Highlands Ranch Roof Co
Roof replacement, roof repair and hail claim help for Highlands Ranch, Colorado. Scopes written to Douglas County code and HRCA guidelines.
The bid line that surprises Highlands Ranch homeowners most is not shingles. It is decking, the wood layer the whole roof is nailed to, which nobody can price exactly until tear-off exposes it. Here is what sits under your shingles, what we commonly find when they come off, and how a well-written bid keeps decking from turning into a blank check.
Homes from the Ranch's 1980s-2000s buildout are almost always decked in sheet goods, either OSB (oriented strand board) or plywood, nailed across the trusses in 4x8 sheets. OSB became the dominant choice through that era because it is consistent and economical, and it performs well as long as it stays dry.
That last condition is the whole story. OSB is pressed from wood strands and resin, and repeated moisture exposure makes the strands swell, the edges thicken, and the panel lose the nail-holding strength shingles depend on. Plywood tolerates wetting cycles somewhat better but delaminates in its own way. Either way, the decking is the surface every fastener grips, and it spends decades absorbing whatever gets past the shingles. Freeze-thaw cycling at this elevation gives even a small leak plenty of chances to do slow damage over a roof's life.
You cannot see decking condition from the ground and only partly from the attic. Tear-off is the reveal. On roofs of this vintage we commonly find swollen or soft OSB around old leak paths, delamination and dark staining along the eaves where snowmelt sat, damp or patched spots under repairs from past hail years, and occasionally sheets that sag visibly between trusses underfoot.
Some findings are cosmetic and stay. Others fail the basic test of holding a nail, and those sheets have to go, because new shingles over bad decking fail early no matter how good the shingles are. The county's final inspection expects the roof system fastened to sound structure, so this is a code matter as well as a quality one.
Nobody can count bad sheets before tear-off, so honest bids handle decking as an allowance: a stated price per 4x8 sheet replaced, commonly reported in industry guides somewhere around $75 to $150 installed depending on material and access, with the final count documented during the job.
An allowance beats the alternatives. A fixed guess either pads the price for wood you may never need or invites a mid-job dispute when the guess runs out. A bid that never mentions decking is worse, because the topic will come up anyway, on the roof, with your old shingles already in the dumpster and your negotiating position gone. Ask every bidder three things: the per-sheet price, how each replaced sheet gets documented, and who approves the count. We photograph every sheet we replace and include the photos in your file.
Decking condition touches two more things worth knowing. First, structure. Douglas County caps roof assemblies at 600 pounds per 100 square feet, one roofing square, unless a Colorado-registered structural engineer signs off, and the decking and framing are part of how any heavier material change gets evaluated. Our guide to roof weight limits in Douglas County covers when that rule matters.
Second, warranties. Shingle manufacturers generally require installation over sound, properly fastened decking, and fastener pull-through on soft OSB is a classic reason wind damage claims get contested. Replacing marginal sheets during a full roof replacement is cheap insurance by comparison, usually a few hundred dollars set against a five-figure roof.
Wondering what is under your shingles? Book a free documented inspection through our contact page. We will check the attic and the roof surface, flag likely decking trouble before tear-off ever starts, and put it all in a written photo report.
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