Brentwood, TN · Roof waterproofingRoof Waterproofing in Brentwood, TN

Shingles shed water; they do not seal it out. The real waterproofing on a roof sits under and around them: the underlayment over the decking, self-adhered membrane in valleys and along the eaves, metal flashing that turns water away from walls and chimneys, and the boots and collars around each pipe and vent. When those layers are lapped correctly, a roof handles a hard Middle Tennessee storm. When one is missing or reversed, water finds it.

Low-slope sections need particular care. A shingled roof needs enough pitch to drain, and the porch roofs, bay windows and some additions on Brentwood houses are built flatter than that. Those areas call for a membrane system rather than shingles, carefully terminated where it meets the steeper roof and the wall above. The same thinking applies around skylights, behind wide chimneys where a cricket is needed to split the water, and anywhere a dormer interrupts the slope.

Waterproofing matters most when a roof changes. Adding a porch, a sunroom or a second-story room means cutting into an existing roof and joining new framing to old, and that joint is where many future leaks begin. JACCO frames those tie-ins and coordinates the membranes and flashing under the same contract, so the details are planned with the structure instead of improvised at the end. It is the heart of how we approach roof waterproofing and flashing on every job.