Rust Bleeding From Under Overlaps
- You See
- Orange streaks running out from beneath the panel overlap.
- What It Means
- Water and grit sit inside the end lap, rusting it from within. Each one is opened, cleaned, stitched, sealed, and covered with fabric.
Our Lyndon metal roof coating jobs start with plans registered with the City Clerk at least 30 days ahead, so the coats land in the dry weeks they need.



Lyndon's city code asks owners to give the City Clerk a copy of the plans and register at least 30 days before work begins, after which the city issues a letter of compliance.
Confirm with the clerk whether Louisville Metro or Lyndon issues the building permit for your address. That month matters for coatings, since late registration can let the driest spring or fall weeks pass while paperwork clears.
Laps are where most metal roofs give up first. These are the joint problems the 30 days get planned around.
What Lyndon owners get from coating the laps and panels instead of chasing leaks.
Registering early sets the work window ahead of time, so tenants and staff know when crews will be on the roof.
Every lap and end lap is reinforced with fabric during the job, instead of caulking leaks one at a time across seasons.
Solid steel stays on the roof, so money goes to laps, fasteners, and coats rather than new panels and a tear-off.
Years later, the coating is washed and recoated with a compatible product, keeping the panels and insulation in place.
Three ways we coat Lyndon metal roofs, all built around lap repair.

Sloped panels that shed water fast get acrylic, scheduled for the dry window the 30-day notice was planned around.
Best on: Sloped R-panel
Low panels and box gutters that hold water get silicone, which tolerates standing water and damper days.
Best on: Low-slope sections

Laps and end laps get sealer and polyester fabric in base coat before either system goes on.
Best on: Every metal roof

Registration in Lyndon runs 30 days. Starting the inspection early keeps the work inside the drier weeks.
The 30-day notice sits in the middle of the job. Everything around it is planned so no dry weeks are lost.
We photograph rust, laps, and fasteners, measure the roof, and mark panel type, skylights, gutters, and rooftop units on a roof plan for the city.
Plans and the coating data sheet go to the City Clerk at least 30 days before work, and the letter of compliance follows.
Primer and coating are ordered to the measured roof while the notice runs, so nothing waits once the letter arrives.
Washing, rust priming, fastener work, and lap sealing start the week the letter arrives, inside the forecast's dry stretch.
Field coats go on when panels are dry and the product's rain-ready time fits the forecast for that day.


Besides Lyndon, we coat metal roofs in the towns below. Systems we use most in Lyndon: Acrylic Roof Coating and Silicone Roof Coating. Don't see yours? Call us or send us a message.
Not to scale. Your town is ringed in blue.
Just west; skylights and a city letter.
South; corridor shops with old mounts.
Southwest; industrial roofs and patch layers.
Far southwest; gutters with the roof.
Laps, rain timing, and the 30-day notice, answered for Lyndon owners.

Question about your own roof?
Call UsThey are cleaned, sealed with a compatible seam sealer, and covered with polyester fabric embedded in base coat. Side laps run up the slope and drain well, while end laps, where one panel overlaps the next downslope, hold water and dirt and rust from inside. Loose end laps are opened, cleaned, and stitched before sealing.
That varies by product. Silicone handles rain sooner than water-based acrylic, and each data sheet lists its own rain-ready time, which we check against the forecast before opening a section. Acrylic needs warm, dry hours, and dew on bare steel counts as moisture. Cooler fall nights stretch cure times, so late-season coats need a wider dry window.
Lyndon's city code asks owners to give the City Clerk a copy of the plans and register at least 30 days before work begins, and the city then issues a letter of compliance.
A simple plan set works: a roof plan marking panel type, skylights, gutters, units, and rust, plus the coating data sheet. Confirm with the clerk whether Metro or Lyndon issues the permit.
Register a month ahead and the job stays inside the dry weeks, while late registration lets the best spring or fall weather pass. Inspect and photograph first, register with the clerk, order primer and coating to the measured roof, and start prep the week the letter arrives. Acrylic jobs gain the most, since acrylic needs warmer, drier days than silicone.
Prep that needs no dry cure, like fastener replacement and rust grinding, starts once the letter arrives, and the field coats wait for the next dry stretch in the forecast. Laps sealed during prep keep the roof tighter while it waits.
Book the roof walk now and we will have plans ready for the City Clerk, so the coating lands in the dry weeks.
Leave a name and number and we will call you about the roof.
Or call now: (502) 281-7941