Roof
Leak
Repair.
Fast, reliable commercial roof leak repair across the Denver metro area. Stop water damage before it affects your business.
A commercial roof leak is never just a roofing problem — it's a business problem. Water intrusion damages inventory, equipment, finishes, and structural components, and can force business closure if left unaddressed. ZMAC Construction's leak repair specialists find the source fast and fix it right the first time.
Finding the true source of a commercial roof leak is often more challenging than the repair itself. Water can travel significant distances between where it enters the roof system and where it appears inside the building. ZMAC's technicians use a systematic approach to leak investigation — starting with a thorough inspection of the most common failure points (seams, flashings, penetrations, and drains) and using water testing or infrared scanning when needed to pinpoint the exact source. We don't just fix the symptom; we identify and address the root cause.
Once the leak source is identified, ZMAC performs a permanent repair using materials compatible with your existing roof system. We don't use temporary patches or quick fixes that will fail again in 6 months. Every repair is documented with before-and-after photos, and we provide a written warranty on our repair work. If the inspection reveals that the roof has multiple failing areas or is approaching end of life, we'll give you an honest assessment of whether repair or replacement is the better long-term investment.
Key Features.
Leak Source Detection
Permanent Repairs
Interior Protection
Prevention Plans
FAQ.
Commercial roof leak repair begins with a systematic investigation to find the true source of the leak — which is often not directly above where water appears inside the building. ZMAC's technicians inspect all common failure points including seams, flashings, penetrations, and drains, and use water testing or infrared scanning when needed. Once the source is identified, we perform a permanent repair using materials compatible with your existing roof system, document the work with photos, and provide a written warranty on the repair.
For active leaks, we aim to have a technician on site within 24–48 hours to diagnose and repair the issue. Simple repairs — a failed seam, a cracked flashing, a failed penetration seal — can often be completed in a single visit. More complex repairs involving multiple failure points or requiring special materials may take 2–5 business days. We provide a clear timeline after the initial diagnosis.
Yes, ZMAC Construction provides free, no-obligation estimates for commercial roof leak repair. We'll inspect your roof, identify the source of the leak, and provide a written proposal for the repair. Call 720-355-3780 or submit a request online — for active leaks, call directly so we can prioritize your response.
This is often due to failures in the wall flashings or 'counter-flashings'. While the main membrane may be water-tight, wind-driven rain can be forced under unsecured metal edges or through failed masonry joints, bypassing your roof's primary defenses. We specialize in finding these elusive entry points.
Absolutely. Even a 'small' leak that only appears occasionally can be saturating your insulation and rotting your roof deck. Over time, this leads to mold growth, loss of R-value, and eventually structural soft spots that can become a major safety liability for your facility.
We stand behind our work with a full workmanship guarantee on every repair area. We also provide a post-repair condition report that identifies any other high-risk zones, helping you transition from reactive repairs to proactive asset management.
Our Repair Methodology.
Diagnostics
Source detection using infrared moisture mapping and physical 'probing' of seams.
Preparation
Systematic removal of failed materials and deep cleaning of the repair surface.
Correction
Permanent, warranted repair using high-performance membranes or industrial sealants.
Verification
Water testing and photo-validation to ensure the leak is permanently resolved.
Stop the Drip, Save Your Deck.
A small leak today is an expensive structural project tomorrow. We stop water intrusion at the source.
Pinpoint Detection
We don't just guess; we use infrared tech to find exactly where water is entering your system.
Same-Day Response
Active leaks are our top priority. We dispatch local Lakewood crews for rapid on-site stabilization.
Long-Term Fixes
We use manufacturer-approved materials that provide permanent, not just temporary, solutions.
