Flat roofs

Hidden dangers and modern solutions

Flat roofs are a common feature in many properties, from residential extensions to commercial buildings. However, their out-of-sight nature often leads to neglect, making them a frequent source of property issues. At Landview, we're committed to helping property owners and buyers understand the risks and solutions associated with flat roofs.

The hidden dangers of flat roofs:

1. Water Pooling:

   • Flat roofs are prone to water stagnation
   • Example: Our recent survey revealed an extreme case of water pooling, putting the roof covering at imminent risk of failure
   • Consequences: Increased likelihood of leaks and structural damage

2. Covering Deterioration:

   • Exposure to elements leads to gradual breakdown of roofing materials
   • UV radiation, temperature fluctuations, and organic debris contribute to wear

3. Inadequate Drainage:

   • Poor design or blocked outlets can exacerbate water pooling issues
   • Regular maintenance is crucial but often overlooked

Modern flat roof construction: The "warm roof" approach

Current building regulations mandate "warm roof" construction for flat roofs. This method includes:

1. Plywood Decking: Forms the base of the roof structure
2. Vapour Barrier: Placed between the insulation and covering to prevent moisture ingress
3. Insulation Layer: Laid consistently over the decking for optimal thermal performance
4. Waterproof Covering: The final protective layer against the elements

Importance of proper ventilation

Even with warm roof construction, ventilation is crucial:

• Options include soffit vents, vented tiles, or mushroom vents
• Proper ventilation prevents condensation build-up within the roof structure
• Neglecting ventilation can lead to timber decay and structural issues

Risks of poor construction or maintenance:

1. Condensation:

   • Can form within the roof structure if not properly ventilated
   • Leads to dampness, mould growth, and timber decay

2. Structural Damage:

   • Prolonged exposure to moisture can weaken roof timbers and decking
   • May result in costly repairs or even roof collapse in extreme cases

3. Energy Inefficiency:

   • Damaged insulation due to moisture can reduce thermal performance
   • Leads to increased heating costs and reduced comfort

Professional installation and maintenance

When replacing or repairing a flat roof:

1. Choose a reputable roofing contractor
2. Ensure they are members of a recognized competent person's scheme
3. Request detailed specifications and warranties for the work

Signs your flat roof might need attention:

• Visible sagging or dips in the roof surface
• Interior water stains or damp patches
• Peeling or blistering of the roof covering
• Blocked or overflowing gutters and downpipes
• Excessive moss or vegetation growth on the roof

How we can help

At Landview, our expert surveyors can:

1. Conduct thorough inspections of flat roofs
2. Identify potential issues before they become major problems
3. Provide detailed reports on the condition of your flat roof
4. Offer guidance on necessary repairs or upgrades
5. Advise on modern, compliant flat roof solutions

While flat roofs can be a source of concern, proper construction, regular maintenance, and expert oversight can ensure they perform effectively for years to come. Don't let your flat roof become a hidden liability.

Concerned about your flat roof or considering purchasing a property with a flat roof? Don't leave it to chance. Contact our friendly team today for expert guidance and comprehensive survey services. Let us help you protect your property investment.