Understanding Decra Metal Shake Maintenance
Decra Metal Shake roofing offers the timeless beauty of hand-split cedar shakes combined with the durability of steel, but like any premium roofing investment, it requires periodic attention to maintain its performance and appearance. Proper maintenance and care not only preserve the aesthetic appeal of these stone-coated steel shakes but can also extend their service life beyond 50 years. This article covers essential care practices, from routine inspections to addressing specific issues, helping homeowners in the UK and Ireland protect their investment.
How Often Should I Inspect My Decra Metal Shake Roof?
Regular inspections are the cornerstone of Decra Metal Shake maintenance. Industry best practice recommends a professional inspection at least once a year, ideally in the spring or autumn, and after any severe weather event such as a storm, heavy snowfall, or high winds. Homeowners can also perform a visual check from the ground using binoculars to look for obvious issues like displaced panels or damaged flashings. For a more thorough examination, a qualified roofing contractor can access the roof safely and check for hidden problems.
Monthly visual checks are especially important in areas with overhanging trees, where debris and moss can accumulate. The interlocking design of Decra Metal Shake minimises fasteners exposed to the elements, but the ridge caps, valleys, and penetrations (such as chimneys and vents) remain critical points. During inspections, look for:
- Dislodged or loose shakes following high winds.
- Accumulated debris in valleys or around roof penetrations.
- Signs of moss, algae, or lichen growth on the stone coating.
- Damaged or corroded gutters that could affect water runoff.
- Any dents or impacts from fallen branches or hail.
What Is the Best Way to Clean Decra Metal Shake Panels?
Cleaning Decra Metal Shake roofing is generally low-effort, but the right approach is essential to avoid damaging the specialised stone coating. For routine cleaning to remove dirt and atmospheric pollutants, a gentle rinse with a garden hose fitted with a spray nozzle is usually sufficient. Avoid using pressure washers, as high-pressure water can force moisture beneath the shakes or strip away the stone granules.
For moss or algae removal, a solution of warm water and a mild detergent (such as a non-abrasive car shampoo) can be applied with a soft-bristle brush or a low-pressure garden sprayer. Work from the ridge downwards to prevent lifting the shakes, and rinse thoroughly with clean water. Never use bleach or chemical cleaners containing harsh solvents, as they can discolour the stone coating or damage the underlying steel substrate. For stubborn lichen growth, a specialised biocide safe for stone-coated metal roofing is recommended, and you should consult the manufacturer’s guidance or a qualified installer for specific product recommendations.
How Do I Address Common Issues Like Moss and Dents?
Moss growth on Decra Metal Shake is primarily a cosmetic concern, but if left unchecked, it can trap moisture and accelerate debris accumulation. In damp climates like the British Isles, moss spores can colonise the rough texture of the stone coating. For small patches, manually remove moss with a soft brush after a rain, when the moss is pliable. For larger areas, a zinc or copper strip installed near the ridge can act as a natural moss inhibitor; rainwater runoff creates ions that prevent spore germination. Avoid moss-killing chemicals that are not approved for use on metal roofing, as they may void the warranty.
Dents from hail or falling branches are uncommon due to the structural integrity of the steel core, but they can occur. Small surface dents that do not compromise the stone coating are purely aesthetic and require no action. For deeper dents that have cracked or chipped the stone coating, the affected panel should be replaced to prevent corrosion starting at the exposed steel. Decra Metal Shake in Copper has a patina that helps hide minor damage, but still benefits from regular checks.
| Issue | Severity Level | Recommended Action | Typical Cost in GBP (£) |
|---|---|---|---|
| Surface dirt / airborne pollutants | Low | Garden hose rinse with mild detergent | £0 (DIY) or £50–£100 (professional soft wash) |
| Moss or algae patches (< 1m²) | Low-Moderate | Soft brush removal + zinc strip installation | £80–£150 (if professional) |
| Dent with intact stone coating | Low | No action needed, monitor annually | £0 |
| Dent with chipped stone coating | Moderate-High | Replace affected panel to prevent rust | £200–£400 per panel |
| Dislodged shake after storm | High | Immediate professional repair/re-securing | £150–£300 per shake |
| Corrosion at fastener or cut edge | High | Replace fastener or seal with approved coating | £100–£250 |
What About Gutter Maintenance and Debris Removal?
Proper gutter care is an integral part of Decra Metal Shake maintenance. While the shakes themselves are durable, clogged gutters can cause water to back up under the eaves or overflow, potentially damaging fascia boards, soffits, and the roof substructure. In autumn, leaves from overhanging trees can accumulate in valleys and gutters. Clear gutters at least twice a year, and more often if you have trees nearby. Use a gutter scoop or a leaf blower to remove debris, and flush the downpipes with a hose to ensure free flow.
Decra Metal Shake’s textured surface can occasionally trap small twigs and leaf fragments, which should be removed by hand or with a gentle air blower. Avoid walking directly on the roof to clear debris, as this can dent the shakes or damage the stone coating. Instead, use a long-handled brush or a roof rake from the ground level where possible. If professional access is needed, compare the maintenance demands of metal versus asphalt to understand why metal requires less frequent intervention.
What Owners Say About Decra Metal Shake Care
Homeowners across the UK and Ireland consistently report that Decra Metal Shake roofing exceeds expectations in terms of low maintenance. On platforms like Trustpilot and roofing forums, common themes include appreciation for the moss resistance compared to traditional cedar shakes, and the peace of mind that comes with a 40-year warranty on the stone coating. One owner in County Cork noted: “After five years, my Decra roof looks as good as the day it was installed. A quick hose-down twice a year is all it needs, while my neighbour’s asphalt roof is already showing algae.” Another in Surrey said: “I was worried about dents from our oak tree, but a falling branch left barely a mark. A quick inspection confirmed the stone coating had a small scuff that was easy to touch up.”
However, some owners mention that snow can slide off the smooth metal surface more readily than from rough asphalt, so ensuring gutters are reinforced is wise. Others stress the importance of using approved contractors for any repairs to maintain the full warranty. Overall, the consensus is that the annual cost of care—often under £100 for DIY inspections and cleaning—is a small price for a roof that lasts 50 years or more. For a deeper understanding of the product’s performance, read our comprehensive review of Decra Metal Shake shingles.
Frequently Asked Questions About Decra Metal Shake Care
Can I walk on my Decra Metal Shake roof for maintenance?
Walking on Decra Metal Shake is not recommended as a routine practice, as it can dent the panels or dislodge the interlocking system. If access is essential, always use a crawl board or a ladder with a ridge hook, and step only on the flat sections near the fasteners. Most maintenance can be performed from the ground or using a telescopic pole.
Will the stone coating fade or peel over time?
Decra’s stone coating is bonded to the steel with a weather-resistant acrylic base, and the natural stone granules are highly UV-stable. Fading is minimal, typically less than 5% over 30 years. Peeling is rare but can occur if the coating was damaged during installation or by a chemical spill. Annual inspections should check for any exposed areas that need touch-up paint.
How do I remove snow from my Decra Metal Shake roof?
Snow generally slides off Decra Metal Shake naturally due to the low-friction surface. Do not use metal shovels or scrapers, as they will scratch the coating. If heavy snow accumulation is a concern, use a plastic roof rake with a long handle to gently pull snow from the eaves, working from the ground to avoid ice dams.
What maintenance is required for the fasteners?
Decra Metal Shake uses concealed fasteners, so they are protected from direct weather exposure. However, over decades, thermal expansion and contraction can slightly loosen them. During a professional inspection every 3-5 years, a contractor can check fastener torque and replace any corroded screws with approved stainless steel replacements. This ensures the system remains watertight.
Can I paint my Decra Metal Shake roof?
Painting is generally not recommended, as the factory-applied stone coating is formulated to last for decades. If you want to change the colour, consult Decra’s approved paint systems and a certified applicator. Non-approved paints can trap moisture and void the warranty. For a different aesthetic option, consider Decra Metal Shake in Copper, which naturally develops a green patina over time.
How do I handle a warranty claim for a coating defect?
If you notice premature corrosion or coating failure, contact your original installer or Decra directly with proof of purchase. The warranty typically covers material defects for up to 40 years on the stone coating and 50 years on the steel substrate. Document any issues with photographs and avoid attempting DIY repairs that could void coverage.
