Winter-Proof Your Roof: A Complete Guide to Roofing & Roof Paint Solutions from NJR Steel

9 May 2025

Winter-Proof Your Roof: A Complete Guide to Roofing & Roof Paint Solutions from NJR Steel


As winter approaches, roofing becomes more than just a structural element—it’s your property’s first line of defense against cold winds and moisture-related damage.


At NJR Steel, we understand that quality roofing and protective roof coatings are essential not just for comfort, but for long-term asset protection and value preservation.


Whether you’re a contractor, homeowner, or developer, this guide will help you prepare your roofing for winter—using industry-leading products and best practices available at NJR Steel.


Why Winter Roofing Maintenance Is Critical


South African winters can bring sudden weather changes.


Neglecting your roof can lead to:


  • Water ingress and leaks
  • Rust and corrosion of metal sheeting
  • Heat loss and insulation issues
  • Increased repair costs later in the year


By taking proactive steps now, you can avoid costly emergencies down the line—and extend the lifespan of your roof system.

Step 1: Inspect & Assess


Start with a full roofing inspection—this applies to both metal and tiled roofs. Key areas to check:


  • Loose or lifted sheeting
  • Missing or rusted screws
  • Damaged flashings and roof ridges
  • Blocked gutters and drainage valleys
  • Faded, chipped, or blistered paint


If you’re working with older galvanized sheeting, look for early signs of oxidation—especially around overlaps and fasteners.


Step 2: Choose the Right Roofing Materials


At NJR Steel, we stock a full range of roofing materials to support both repairs and new installations, including:


Steel Roof Sheeting:


  • IBR, Corrugated, and Wide Span profiles
  • Available in Galvanized and other finishes
  • Cut-to-length options for efficient material usage
  • Engineered for strength, weather resistance, and long-term performance


Roof Accessories:


  • Ridge caps, flashings, closures
  • Roofing screws, washers, and fasteners (including self-drilling options)


Step 3: Prepare & Prime the Surface


Before applying roof paint, preparation is key:


  • Clean the surface: Remove dust, rust flakes, and old paint with a high-pressure hose or wire brush.
  • Apply a primer: This step is non-negotiable for rusty or weathered metal. Use a zinc phosphate primer, such as the NJR Steel QD Primer. 
  • Seal gaps and joints: Use a waterproof roof sealant on overlaps, valleys, and screw heads.



Ask your NJR Steel branch about compatible primer and sealant solutions for your specific sheeting type.


Step 4: Apply Quality Roof Paint


A professional-grade roof paint, such as the NJR Steel QD Enamel, doesn’t just freshen up the appearance—it provides an essential protective barrier against:


  • Moisture
  • UV damage
  • Rust and peeling
  • Thermal expansion and contraction


NJR Roof Paint Range:


  • Weather-resistant, long-lasting formulations
  • UV-blocking properties
  • Wide colour range for modern and traditional roofs
  • Compatible with galvanized and chromadek surfaces
  • Easy to apply with brush, roller, or spray gun


Benefits of Repainting Before Winter:



  • Seals microscopic cracks before rain penetrates
  • Reduces heat loss through the roof
  • Prevents further rust and deterioration
  • Adds years to your roof’s service life


Optional Add-Ons for Maximum Protection


Enhance your roof’s performance by considering:


  • Thermal reflective coatings to reduce interior heat loss
  • Insulation layers beneath roof sheets for energy efficiency
  • Anti-corrosion touch-up kits for post-install maintenance


Winter Roofing Checklist


Before the first cold front hits, make sure you:


  • Conduct a full roof inspection
  • Replace rusted or damaged sheets and screws
  • Clean and prime metal sheeting
  • Repaint with UV and moisture-resistant roof paint
  • Check and clear gutters and downpipes
  • Use flashing and sealant around joints and ridges


Why Choose NJR Steel for Your Roofing Needs?


  • Trusted Brand Nationwide: With decades of industry experience, NJR Steel is a leading supplier to builders, contractors, and DIYers alike.
  • End-to-End Roofing Solutions: From sheeting to paint, from flashings to fixings—we have everything under one roof.
  • Expert Guidance: Our team can assist with product selection, sizing, and on-site technical support.
  • Competitive Pricing & Availability: We work closely with local and international suppliers to ensure value and stock reliability.


Get Winter Ready with NJR Steel


Visit your nearest NJR Steel branch or contact our roofing specialists to plan your winter maintenance.


We’re here to help you build smarter, protect longer, and stay ahead of the weather.


View our steel roofing products


View our steel paint



Browse our Online Steel & Paint Shop 

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