Residential & Commercial Roofing in Signal Hill
From quick fixes to major projects, Signal Hill Roofing & Maintenance has been the roofing contractor Signal Hill homeowners call for 23 years. Here's a rundown of what we offer.
Roof Replacement
After tear-off, we always check decking and replace what's needed. Soft spots mean moisture intrusion. The old roof was leaking longer than you realized. We use 7/16" or 15/32" CDX plywood depending on rafter spacing. New decking costs $75-$120 per sheet installed. We only replace what's actually damaged.
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Roof Repair
Improper step flashing is the leading cause of roof leaks at wall-to-roof transitions. Step flashing needs to be woven between shingle courses with each piece extending 4" above the shingle exposure. We see Signal Hill homes where the last roofer used continuous L-flashing or just caulked the gap. That always fails. We tear it out and install proper step flashing with a kick-out diverter at the bottom per IRC R905.2.8.3.
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Storm Damage Repair
Wind speeds above 60 mph cause shingle tab lift and adhesive seal failure per ASTM D7158 testing protocols. Our Signal Hill inspectors check the entire windward exposure. Not just the obvious damage. Poor ventilation causes ice dams which cause water intrusion under the shingle field during freeze-thaw cycles. We document all contributing factors so your insurance claim covers root-cause repairs, not just surface patches.
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New Roof Installation
New construction roofing in Signal Hill starts with getting the design details right before materials arrive. Roof pitch, attic ventilation needs, snow load requirements, and local code amendments all affect material selection and installation methods. We coordinate with your general contractor or architect to ensure the roof system matches the building specifications.
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Metal Roofing
Corrugated metal and R-panel (exposed fastener) at $5-$8/sq ft installed for agricultural buildings, shops, carports, and covered patios in Signal Hill. 29-gauge is budget, 26-gauge is standard. For residential, we recommend 24-gauge standing seam at $12-$22/sq ft. The aesthetics and longevity justify the premium. DaVinci composite shake and slate profiles offer the look of natural materials with metal's performance. Perfect for Signal Hill HOA neighborhoods that restrict metal roofing appearance.
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Shingle Roofing
CertainTeed Landmark PRO with NailTrak technology and Max Def color blends. Dimensional color depth that mimics natural cedar. Algae-resistant with StreakFighter technology. Class A fire rating, ASTM D3462 compliant, rated to 110 mph per ASTM D3161 Class F (Landmark PRO IR rated to 130 mph). 5-Star SureStart Plus warranty when installed by CertainTeed SELECT ShingleMaster. That's us. The warranty covers 100% of material and labor costs for 20 years with declining coverage for 30 more.
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Flat Roofing
TPO single-ply membrane in 60-mil or 80-mil thickness, fully adhered or mechanically attached over minimum R-25 polyiso insulation. Hot-air welded seams tested with a probe at every joint. We install per NRCA and manufacturer specifications with tapered ISO insulation creating minimum 1/4" per foot positive drainage. Ponding water is the number one cause of flat roof failure in Signal Hill. Tapered insulation eliminates it. FM 4473 rated systems available for hail-prone areas. Fully warranted by Carlisle, Firestone, or GAF.
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Commercial Roofing
TPO is our most-installed commercial membrane in Signal Hill. 60-mil thickness, hot-air welded seams, mechanically attached or fully adhered over polyiso insulation. The weld is stronger than the membrane. 15-20 year manufacturer warranties depending on system build-up.
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Gutter Installation
We install gutter guards for homeowners who are done cleaning gutters twice a year. Micro-mesh over the opening, screwed into the front lip. Leaves and pine needles sit on top and blow off. Not 100% maintenance-free, but close. You might hose them once a year.
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Roof Inspection
Commercial and flat roof inspections include infrared moisture scanning with Flir E8 thermal cameras. Trapped moisture in the insulation layer shows as temperature differentials on the thermal image. No need to cut core samples everywhere. We identify wet zones, then core sample the suspect areas to confirm. This approach gives you a precise repair scope at a fraction of the cost of exploratory tear-offs.
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Emergency Roof Repair
Fallen tree damage requires immediate structural assessment before tarping. If a tree has displaced rafters, cracked a ridge beam, or pushed through ceiling joists, the structure is compromised. We assess from both exterior and attic, coordinate with structural engineers or framing contractors when needed, and tarp only areas that are structurally stable enough to support the tarp hardware. Insurance claims for tree strikes require separate line items for tree removal, structural repair, and roofing repair. We document each scope independently.
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Skylight Installation
Replacing an old leaking skylight is often cheaper than trying to repair it. New units from VELUX have Low-E laminated glass, argon fill, and No Leak guarantees when installed with the manufacturer's flashing system. Our Signal Hill crews replace skylights in a single day.
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