Diamond in the Sky Roofing ~ Lic#1117747

Commercial Roofing Services

Flat Roof Repair

Roof Coatings & Restoration

Ponding water, split seams, blistered membranes, failed drains and parapet flashing, plus emergency leak response to stop damage fast.

Roofer applying a white reflective roof coating - commercial roof restoration in San Diego

Roof Coatings & Restoration

Silicone and acrylic coatings that can extend the life of a sound roof, reflect heat and help meet cool roof rules, with less tear-off and disruption.

New white TPO membrane being installed on a commercial roof in San Diego County

Commercial Roof Replacement

Assessments & Maintenance Plans

Tear-off and new TPO single-ply or modified bitumen systems, with permits, inspections and rated cool-roof products to meet Title 24.

Roofer inspecting a white commercial roof - commercial roof assessments and maintenance in San Diego

Assessments & Maintenance Plans

Roof assessments with photo reports for owners, HOAs, property managers and buyers, plus scheduled inspections and drain clean-outs before and after the rainy season.

Commercial Roof Systems & Cool Roof Rules

TPO and Modified Bitumen

TPO is a white single-ply membrane with heat-welded seams, reflective and energy-efficient for warehouses, retail and offices. Modified bitumen is a multi-layer asphalt system that handles foot traffic and rooftop equipment well. We also repair older built-up (BUR) roofs, and tile or shingle mansards on restaurants, offices and HOA buildings.

Cool Roof Rules for San Diego Commercial Buildings

California's Title 24 energy code can require a reflective cool roof when a commercial low-slope roof is replaced. The City of San Diego's proposed 2025 code supplement applies to non-residential roofs under 2:12 slope when the work covers more than 50% of the roof or 2,000 sq ft, whichever is less, with an aged solar reflectance of at least 0.70 and thermal emittance of at least 0.75 (or SRI 75). We specify a rated product so your project passes inspection.

Why Property Managers Work With DIS

One point of contact: Duane, not a call center. Before, during and after photos for owners and insurers. Work scheduled around tenants and business hours. And an honest scope: coatings or repairs when they make sense, replacement only when they don't.

Commercial Roofing FAQ

Have another question about your building? Call or text Duane at 760-410-2340.

Can you coat my existing commercial roof instead of replacing it?

Often, yes. If the roof deck and insulation are dry and the membrane is still sound, a silicone or acrylic coating can extend the roof's life. A moisture check comes first, because coating over wet insulation traps the problem.

How often should a commercial roof be inspected?

At least twice a year, before and after San Diego's rainy season, and after any major storm or Santa Ana wind event. Regular inspections catch small problems early and keep records for warranties and insurance.

Do you work with HOAs and property managers?

Yes. We provide written scopes, photos and invoices that fit board approvals, and we schedule work around tenants and business hours. In most cases your business can stay open while we work.

What types of commercial buildings do you roof in San Diego County?

Offices, retail and strip centers, restaurants, warehouses and light industrial buildings, churches, and multi-family and HOA properties across San Diego County, with most work in North County.