Flashing is one of the most critical components of any pitched roof. It acts as a protective barrier where the roof meets walls, chimneys, skylights, and other junctions, preventing water from entering your home. When flashing fails, even a well-constructed roof can develop leaks and suffer significant water damage. At MCM Roofing Repairs New Milton, we help homeowners across New Milton, Hampshire identify and fix flashing problems before they lead to costly repairs.
Understanding Roof Flashing
Flashing is typically made from lead, aluminium, or other weather-resistant materials. It is installed at vulnerable points on the roof to channel water safely away from joints and into the gutters. Common locations include:
- Around chimneys and roof vents
- Where roof slopes meet walls (soakers and step flashing)
- Valleys where two roof planes meet
- Edges of skylights and dormers
When properly installed, flashing provides years of reliable protection. However, exposure to weather, poor installation, or simple ageing can lead to failures.
Common Causes of Flashing Failures
- Weathering and Corrosion
Over time, metal flashing can corrode, crack, or lift due to repeated exposure to rain, wind, and frost. Salt-laden coastal air in areas like Hampshire can accelerate corrosion. - Poor Installation
Flashing that was incorrectly cut, sealed, or positioned can allow water to bypass its protective barrier. Even minor gaps can lead to leaks in heavy rain. - Movement of Roof Materials
Roofs naturally expand and contract with temperature changes. This movement can loosen flashing over time, particularly around chimneys and dormers. - Blocked or Damaged Mortar Joints
In older properties, flashing is often set into mortar joints. Cracked or deteriorated mortar can allow water to seep behind the flashing. - Damage from Roof Repairs or Maintenance
Flashing can sometimes be accidentally displaced during gutter cleaning, roof repairs, or installation of new features like satellite dishes.
Signs Your Flashing May Be Failing
Early detection can prevent serious water damage. Look out for:
- Damp patches or stains on ceilings or walls near the roofline
- Moss or algae growth around flashing points
- Visible gaps, cracks, or lifting metal
- Drips or leaks inside the loft after heavy rain
If you spot any of these warning signs, prompt inspection is essential to prevent the problem from escalating.
Effective Fixes for Flashing Issues
The right solution depends on the type and severity of the problem:
- Re-Sealing Minor Gaps
For small cracks or lifted edges, a professional roofer can re-seal the flashing using high-quality, weatherproof materials. - Replacing Damaged Flashing
Severely corroded or cracked flashing should be replaced to restore a watertight seal. Modern lead or aluminium options are durable and long-lasting. - Re-Bedding into Mortar
Where mortar joints have failed, the flashing can be re-bedded and pointed to secure it and prevent future leaks. - Full Flashing Replacement During Roof Repairs
For older roofs or repeated flashing failures, it may be more cost-effective to replace the flashing entirely as part of a broader roof maintenance plan.
At MCM Roofing Repairs New Milton, we carry out thorough inspections to identify the root cause of leaks and recommend the most effective, long-term fix.
Conclusion
Flashing may seem like a small detail, but its role in protecting your pitched roof is crucial. Ignoring worn or damaged flashing can lead to water ingress, timber rot, and costly structural repairs. By addressing problems early and using professional roofing services, you can ensure your home stays dry and secure.
If you suspect flashing issues or have noticed signs of water damage, contact MCM Roofing Repairs New Milton. We provide expert inspections and reliable repairs to keep your roof fully weatherproof in Hampshire’s challenging climate.
Call us on: 01425 208 596
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