As a Hastings commercial metal roof repair contractor, we replace failed screws, reseal laps, and swap rusted panels on exposed-fastener and standing-seam roofs.
Fit Check
Hastings commercial metal roof repair starts with one call on each problem panel: keep it and reseal, or swap it for a new one.
Metal Roof Conditions
Metal roofs leak at the joints, the fasteners, and the trim far more often than through the open panel.
Repair Options
Each metal roof failure has a specific fix. This table also shows where that fix stops working.
| Problem | Repair We Make | When It Falls Short |
|---|---|---|
| Failed washers | Remove each screw and set an oversized fastener with a new washer | Holes torn or rusted wider than the oversize |
| Missed purlin | Seal the hole with a metal patch or stitch it into the lap | Rows of misses across the whole roof |
| Open end lap | Separate, clean, re-tape with butyl, and refasten the lap | Rust through both lapped sheets |
| Rusted panel | Replace with the same profile and gauge | Purlins under the panel rusted too |
| Loose ridge cap | Refasten with closures and sealant at each rib | Bent or rusted cap that no longer seats |
Water dropping on equipment or stock needs a call. Throw a tarp over what you can, and we will help you narrow down the panel above.
Call UsSeeing rust at laps or screws backing out? Book an inspection before winter and get a written fastener and panel list.
Schedule Free InspectionRepair Sequence
Five decisions, in order, from finding the failed fasteners to recording which panels changed.
We walk every purlin line, end lap, ridge, and curb, testing screws by hand and probing rust with a screwdriver. Inside, wet spots on the floor or deck get marked so the roof above can be matched to them.
Firm steel with surface rust stays and gets resealed. Steel that flakes or holes rusted through means that panel comes off and a matching one goes on.
A cracked washer takes a new fastener in the same hole. A stripped hole takes an oversized screw, and a screw that missed the purlin gets sealed with a patch or stitched into the lap.
Open end laps get separated, cleaned, re-taped with butyl, and fastened back down. Ridge caps and eave trim get closures and fresh fasteners at each rib.
Your close-out notes list replaced panels by location, the fastener count, and laps that were resealed, so the next inspection checks those spots first.
What It Protects
Metal buildings often run one insulation blanket and one open floor end to end, so a small leak travels.
Related Repairs
Some buildings mix metal and membrane roofs, and some leaks start somewhere else entirely.
Low-slope additions and office wings beside a metal shop usually carry membrane that needs welded or taped patches.
Flat roof repair
Water that runs along purlins can drip far from the failed screw, and leak tracing finds the real entry point.
Leak repair
Plants with exhaust, steam, or process residue on the roof need materials picked for that exposure.
Industrial roof repair
Question about your own roof?
Tell us the panel type and where the drips land, and we will tell you where we would look first.
Call UsMetal Roof FAQ
The count of fasteners, laps, and panels that need work drives most of it. Resealing a few screws is small work. Replacing rusted panels, rebuilding curb flashing, or refastening ridge caps adds material and lift time. Panel profile matters too, since older or uncommon profiles can be hard to match.
Failed fasteners. Rubber washers dry out and crack, and screws back out as panels expand and contract with the temperature. Open end laps, failed sealant at ridge caps, and poor flashing at curbs follow close behind. Very few leaks come through the flat of a panel.
First find out why the screw failed. A cracked washer only needs a new fastener and washer in the same hole. A stripped hole takes an oversized screw. A screw that missed the purlin leaves a hole that gets sealed with a metal patch or a stitch screw into the lap.
Replacement makes sense when rust has eaten through the steel or the surface flakes under a screwdriver. Surface rust can be cleaned and treated, but perforated panels cannot hold a seal. The new panel matches the old profile and gauge, laps correctly, and goes down with fresh fasteners.
It can slow one, but it rarely lasts as the repair. Spray and tube sealants usually go over the cause, such as a backed-out screw or an open lap, without fixing it. Any sealant needs a clean, dry surface to bond. A lasting repair replaces the failed part and seals it with a compatible material.
Send the address and the panel type if you know it. We will check fasteners, laps, and rust, then give you a written repair list.
