Examine the area for stubborn rust stains.
Galvanized metal roof coating for holes repair.
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Do not heat the surface over 750 f 400 c or allow the surrounding galvanized coating to burn.
To protect the integrity of the item repair galvanized metal rust as soon as it is noticed.
Although the hot dip galvanized coating is very resistant to damage small voids or defects in the coating can occur during the galvanizing process or due to improper handling of the steel after galvanizing.
This will determine how much materials you need to finish the job.
Compared to shingles or rolled roofing metal roofing is easy to install and it can last for 20 years or more but it is susceptible to a defect that never.
Step 1 measure the repair area.
A direct flame held on the repair area is likely to overheat the solder.
Pour some vinegar on a wire brush then scrub the rusted area thoroughly.
Before you start accurately measure the length and width of the hole adding a couple of inches extra to both of these dimensions.
If you use a direct flame keep it moving.
Get the galvanized metal sheet that you will be using to repair the damage.
The touch up and repair of hot dip galvanized steel coatings is important to maintain uniform barrier and cathodic protection as well as ensure longevity.
Step 1 apply vinegar to the rust.
A hole in a metal roof system can be caused by any number of sources the hole may be from deterioration and rust or it may be from something falling onto the roof surface such as a large branch.
Use a soft flame heat gun or soldering iron to heat the parent metal repair area to at least 600 f 315 c.
Step 2 wash the area with a garden hose to neutralize the acids in the vinegar.
This is a very important repair that could save your roof.
How to repair a rusted metal roof.