Why it matters here
Why do downtown Loveland roofs need a different approach?
Because the house underneath is different. Downtown has the city's oldest housing, and roofs on these homes hide problems that newer construction simply doesn't have.
Many older homes were built with board sheathing, rows of individual planks with gaps between them, rather than modern plywood. Some shingle manufacturers require a solid deck for their warranty, so a re-roof may include new sheathing over or in place of the boards. Roofers also commonly find two or even three layers of old shingles, each one adding weight and hiding the condition of the wood.
Then there are the details. Brick chimneys with aging mortar, porch roofs and rear additions tied into the main roof at awkward angles, low-slope sections over sunrooms, and small attics with little ventilation all create leak points. Mature street trees drop leaves into gutters and, in a heavy spring snow, limbs onto roofs. Through all of it, the same Front Range hail, sun and freeze-thaw that affect every Loveland roofing help request apply here too, on roofs that are often already near the end of their life.
Winter adds its own twist. Older homes tend to have thin attic insulation and little air sealing, so heat escapes through the ceiling and melts snow on the roof from below. On a steep gable that meltwater races down to cold eaves and freezes, and the ice dams that follow are a familiar sight on older blocks after a snowy week. A re-roof is the right time to add ice and water shield at the eaves, but the lasting cure usually includes insulation and ventilation work in the attic as well.