Before & After Gallery - Mercer Roofing Co Woodland Hills

Roofing Before & After in Woodland Hills, CA

Photos say what a pitch never can. We could tell you our crews flash chimneys properly and replace rotted decking instead of nailing over it, but showing you is better. Below are real scenarios we handle across Woodland Hills, Calabasas, Tarzana, and the west Valley. Every job started with a written price, and every repair left with a 365-day written guarantee.

Call (341) 217-2677

Recent Transformations

Curling Shingle Replacement on a 1960s Ranch in Woodland Hills

BeforeAfter

The problem was classic Southern California sun damage. Decades of heat had curled the shingles along the south-facing slope until they looked like shag carpet, and the homeowner was finding granule grit in the gutters after every Santa Ana wind. We pulled the old shingles, found the decking underneath was still solid, and installed a full CertainTeed dimensional shingle system with new underlayment and drip edge. The roof now sits flat and tight, and the granules stay on the shingles where they belong.

Leak Repair and Decking Replacement in Walnut Acres

BeforeAfter

The homeowner had a water stain creeping across the living room ceiling after three winters of ignoring a small leak around a plumbing vent boot. When we opened the roof, the plywood decking around the vent was spongy and black with rot. We cut out the bad section, replaced it with fresh decking, installed a new lead boot, and tied the repair into the surrounding shingles with matching Owens Corning product. Stain is gone, ceiling patched, and the repair is covered in writing for 365 days with a free second visit if it ever fails.

Complete Roof Installation After Wind Damage off Topanga Canyon

BeforeAfter

A February wind event tore off a section of the old roof and lifted shingles across the entire rear slope. The roof was original to the house, so a patch would have been throwing good money after bad. We did a full tear-off, inspected every inch of decking, replaced what was cracked, and installed a complete GAF Timberline system with new flashing at every penetration. The homeowner went from a tarp and a prayer to a roof rated for 130 mph winds, which is more than Topanga will likely throw at it.

Flat Roof Reseal on a Mid-Century Modern Near Warner Center

Mid-century homes with low-slope roofs are everywhere in this part of Woodland Hills, and they all eventually fight the same battle against ponding water. This one had blistered, cracking coating and a patch job from a previous contractor that was already separating at the seams. We stripped the failing material, repaired the seams properly, and applied a new reflective coating system that keeps the house measurably cooler in August. The budget was about a third of a full replacement, and the homeowner knows exactly what the warranty covers because it is in writing.

Chimney Flashing Failure and Stucco Water Intrusion

Water was trickling down the chimney chase and showing up as bubbling stucco on the interior wall. The old flashing had been done with caulk and hope, which works right up until it does not. We removed the old flashing, cut a proper reglet into the stucco, and installed new step and counter flashing with a watertight seal. When we finished, the homeowner ran a hose on the chimney for ten minutes and watched zero water enter the chase. Sometimes the fix is simple when the flashing is right.

Ridge Vent Installation for an Overheated Attic in Vista De Oro

The homeowner’s HVAC bills in summer were higher than they should be, and the attic felt like a furnace by noon. The roof had no ridge vent and only two tired box vents fighting the heat. We cut a proper slot at the peak, installed a continuous ridge vent, and balanced the intake with new soffit vents. The attic now breathes the way it is supposed to, and the shingle manufacturer’s warranty stays valid because the ventilation meets spec. That last part matters more than most people realize.

Want Results Like These?

Every roof above started the same way: a phone call and a free estimate with a written price before any work began. Call Mercer Roofing Co Woodland Hills at (341) 217-2677. A live person answers, and we will send a background-checked technician who badges in at the door.

Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Woodland Hills since 2000.