PolyShield Metal Roof
Repair and protection of metal roofs.
Project-based treatment of corrosion, overlaps, fastenings, gutters and leak-sensitive details on metal commercial roofs.
PolyShield performs this
Corrosion repair and metal protection
Protect metal roofs, facades and steel before material loss leads to replacement.
- 01Inspect corrosion, salts and existing coating
- 02Clean and mechanically prepare
- 03Perform primer and detail repair
- 04Check protective layers and dry layer thickness
From damage picture to solution
Problem, cause and effect first visible.
Damaged coatings allow moisture and salts to reach the metal.
- Weather and industrial loads
- Cutting edges, fasteners and overlaps
- Insufficient preparation for previous maintenance
Corrosion can affect sheet thickness, connections and water tightness.
Corrosion control, project-specific preparation and a registered protective layer build-up.
Business benefits
The value is not just in the new layer.
Material conservation
Retain technically usable plates and steel parts for longer.
Scale
Large profiled surfaces where responsible airless treatment.
Waterproofing
Include seams, gutters and fasteners as critical zones.
Control
Visibly document preparation and layer thickness.
RISK OF DELAY
Surface corrosion can progress to material loss, leaking details and expensive panel or structural replacement.
First have the size, cause, accessibility and desired planning assessed. We then compare repair, renovation and, where necessary, replacement without selling a standard solution in advance.
Have project assessed →Detail-oriented renovation
A metal roof rarely leaks only in the roof surface.
Overlaps, fastenings, slab edges and gutters move and weather differently. Therefore, corrosion, adhesion and detail movement are assessed separately.
The system structure is tailored to the existing metal, the existing coating and the corrosion load.
System order
Clean, treat corrosion, seal details and fully protect.
- Degrease and remove contamination
- Remove loose rust and coating
- Apply suitable metal primer
- Handling overlaps and attachments
- Apply elastic protective layer
- Register application and consumption
Continue working in a controlled manner
Quick-drying primers can make better use of the weather window.
After cleaning, desalting and mechanical preparation, a suitable fast-reacting metal primer can limit the waiting time for detail and main layers. Overlaps, fastenings and gutters remain separate technical zones.
Corrosion is never just covered. Residual wall thickness, adhesion of existing layers and the accessibility of slab edges determine whether local repair or a broader renovation is responsible.
Double protection
Waterproofing and corrosion control in one coherent system.
Move along with sheet metal and details
A water-based elastomer can, within a suitable system structure, remain permanently flexible and follow movement around overlaps, fasteners and gutters.
- Seamless main layer
- Targeted detail reinforcement where necessary
- UV and weather resistant finish
- Register consumption and layer build-up
Not just a waterproof layer of paint
The same renovation route must also control corrosion, salts and existing coatings. Additional requirements apply for heavy industrial or maritime loads.
- Assess the degree of corrosion and residual wall thickness
- Degreasing, desalting and mechanical preparation
- Adhesion test on existing coating
- Determine load class in advance
Keep metal waterproof
For profiled plates, gutters, overlaps and roof details where leakage and corrosion play together.
Direct-to-metal finish
For color restoration and corrosion protection of metal siding in a suitable environment.
C4–C5 system selection
For steel structures and industrial or maritime loads with demonstrable classification.
View steel protection →