How To Fix Leaking Screw Holes In A Metal Roof
Old screws come out and oversized screws with new sealing washers go in; stripped holes get a sealed patch plate.

As a Grand Island commercial metal roof repair contractor, we replace failed fasteners, reseal laps, and swap rusted panels on shops, warehouses, and ag buildings.
Grand Island commercial metal roof repair fits most steel roofs where the panels are still solid. These details show when a repair holds and when larger work is due.
| Roof Detail | Repair Fits | Plan Bigger Work |
|---|---|---|
| Panel steel | Surface rust on solid panels | Rust holes through several panels |
| Fasteners | Washers cracked or screws backed out | Holes stripped across most of the roof |
| Laps and seams | Sealant failed at a few laps | Laps separating along whole runs |
| Structure below | Purlins straight and dry | Rusted purlins or bowed framing |
Metal roofs give clear warnings, inside and out. These are the ones worth a call before winter sets in.
Failed fasteners top the list: rubber washers dry out and crack, and heat cycling backs screws out until water runs down the shank.
Water held between overlapping panels rusts the steel from inside the lap, showing first as orange streaks below the joint.
Ice dams at cold eaves push meltwater uphill under panel laps. NWS Hastings records a 135-day run of freezing lows in Grand Island.
A straight row of drips on the floor marks a fastener line or open side lap overhead, and stock below it needs moving today.
Curb and vent flashings on steel roofs crack where the panel flexes, and sealant smeared over the crack lasts one season at best.
Every repair is sized to the panel profile and gauge already on the building.
Old screws come out and oversized screws with new sealing washers go in; stripped holes get a sealed patch plate.
Laps are cleaned, old sealant removed, butyl tape installed, and the joint refastened and covered with reinforcing fabric.
Panels rusted through are replaced with matching profile and gauge, lapped and fastened to shed water like the originals.
Ridge caps, eave trim, and gable trim get new closures, sealant, and fasteners where wind has loosened them.
Most metal roofs repair well for years. These rows show when new panels over or in place of the old ones make more sense.
| Factor | Metal Roof Repair | Plan Re-Roofing |
|---|---|---|
| Rust | Surface rust treated before sealing | Perforated panels across many bays |
| Leak spots | Fastener lines and a few laps | Leaks at most laps and fasteners |
| What sets the cost | Fastener count, lap length, and lift access | New panels, trim, and framing work |
| Insulation | Dry blanket or board under the panels | Soaked insulation sagging between purlins |

Request an estimate and note the panel type, roof height, and where drips land inside. Height decides whether we bring a lift or roof anchors.
Get A Free EstimateSteel roofs get fixed in this order, so each lap and fastener line is checked once and sealed once.
Each fastener line, side lap, end lap, and ridge cap is checked, with loose screws and failed sealant marked on a roof sketch.
From a lift or ladder we check purlins, insulation, and stains, which shows where water has been running along the steel.
You get each repair by location, the panel profile and gauge to match, and whether a lift or roof anchors are needed.
Rust is cleaned and primed, laps are taped and refastened, and fasteners are replaced with oversized screws and new washers.
After the next rain or a hose test, the repaired fastener lines are checked from inside, and photos go into your building file.
Steel buildings rarely stand alone. These repairs cover the roofs around them.

Low-slope offices attached to a steel shop need membrane repairs at the seams and drains where the two roofs meet.
Flat roof repair in Grand Island
Leaks that show far from any lap get traced from the floor stain back to the opening above.
Roof leak repair in Grand Island
Plant roofs with metal panels and process exhaust need repairs that hold up around fans and duct curbs.
Industrial roof repair in Grand IslandWhat Grand Island owners of steel buildings ask us most.
Water works into laps and fastener holes during the day, then expands as it freezes overnight, prying the joint open a little more each cycle. NWS Hastings records a 135-day run of lows at or below freezing in Grand Island, from November 1964 to March 1965. Sealed laps and clear gutters limit these winter leaks.
The lap is cleaned, old sealant is scraped out, and loose fasteners are found. New butyl tape or sealant goes in, the lap is refastened, and the seam is covered with reinforcing fabric and a compatible sealant. Standing seams with open clips are re-seamed or re-clipped, and rusted lap edges are treated before anything is sealed.
The count of fasteners, laps, and panels needing work sets most of the cost, along with roof height and access. A few rusted panels cost far less than resealing every lap on a large building. Rust depth, panel gauge, and matching an older profile affect material, and lifts or roof anchors for tall or steep roofs add labor.
Fasteners. Their rubber washers dry out and crack, and daily heat and cold loosen the screws until water runs down the shank. After fasteners come open laps, failed sealant at ridge caps, and torn flashing at curbs. A fastener check every few years catches most of these before they leak into the building.
Yes. The old fastener comes out and a larger-diameter screw with a new sealing washer goes in. Stripped or oversized holes get a sealed patch plate, abandoned holes get sealant and a small metal patch, and every fastener nearby is checked for washers driven too tight or too loose.
Send the building size, panel type, and where water shows inside, and we will set up the roof walk.