When to Contact a Roofing Company: 8 Critical Warning Signs You Shouldn’t Ignore

June 18, 2025

Bernard Andrews Roofing

when to contact a roofing company

Your roof silently protects your home day and night, but how do you know when it needs professional attention? Recognising the warning signs early can save you thousands in repairs and prevent serious damage to your property. Here are the key indicators that it’s time to contact a professional roofing company.

1. Water Stains on Ceilings or Walls

When to act: Immediately

Water stains appearing as brown, yellow, or grey marks on your ceilings or walls are clear signs of roof damage. Any time you notice brown spots on the ceiling, you should call a roofer right away, but if they’re smaller than the size of an orange, you can wait until your regular roofing company is available. Anything bigger demands an emergency response.

Don’t ignore even small stains, as they indicate water is penetrating your roof and can quickly lead to structural damage, mould growth, and ruined insulation.

2. Missing or Damaged Shingles

When to act: Within 24-48 hours

You may observe broken, missing, or curled shingles, which can expose the interiors of your home to sun, water, and wind. After storms, check your property for scattered shingles that may have blown off. Missing shingles leave your roof vulnerable to water penetration and further wind damage.

Even a few missing shingles should be addressed promptly, as exposed areas can quickly deteriorate and cause more extensive damage.

3. Sagging Roof Areas

When to act: Emergency – contact immediately

A sagging roof is a serious sign of structural weakness, which many reasons can cause. This damage is often due to long-term water damage or overload of weight from snow, etc. A sag can indicate that the decking or support is failing.

If you notice any sagging, contact a roofing company immediately. This is a critical safety issue that could lead to roof collapse.

4. Moss, Algae, or Dark Spots

When to act: Within a week

The presence of moss and algae on the roof or ceiling indicates potential moisture retention in the roof material, which can cause damage to shingles and leakage if not repaired on time.

While not immediately dangerous, moss and algae growth signals underlying moisture problems that need professional assessment to prevent further deterioration.

5. Granules in Gutters

When to act: Schedule inspection within the month

The crumbling of damaged shingles into loose particles is known as “granules.” These granules generally build up at the edges of your roof, inside the gutter troughs, and around the perimeter of your home.

Small amounts of granules are normal, but excessive granule loss indicates your shingles are nearing the end of their lifespan and becoming less effective at protecting your home.

6. Damaged Flashing

When to act: Within a few days

Flashing is essential for directing water away from critical areas of the roof, such as chimneys, skylights, and where the roof meets the vertical walls. If the flashing is bent or missing, water will enter and damage the material.

While flashing repairs are typically minor, delaying them can lead to significant water damage throughout your home’s structure.

7. Your Roof’s Age

When to act: Schedule professional assessment

If your roof is approaching 15-20 years old (for asphalt shingles), it’s time for a professional evaluation. Asphalt shingles tend to last anywhere from 10 to 20 years, depending on your location and weather conditions.

Even if there are no obvious problems, an ageing roof should be inspected regularly to plan for necessary repairs or replacement.

8. Visible Daylight in the Attic

When to act: Emergency – contact immediately

Check on your roof, and if you see any visible holes, or if you can see any daylight showing through anywhere, it’s time to call a certified roofer.

If you can see daylight through your roof boards when in the attic, your roof has structural damage that requires immediate professional attention.

Emergency vs. Routine Repairs

Contact a roofer immediately if you notice:

  • Active leaks with water entering your home
  • Sagging roof areas
  • Large sections of missing shingles
  • Visible holes or daylight through the roof
  • Storm damage

Schedule within a week for:

  • Small water stains
  • Minor flashing damage
  • Moss or algae growth
  • A few missing shingles

Professional Roof Inspections

A professional, free inspection every few years can provide peace of mind that your roof is performing as it should. Many roofing companies offer free inspections, which can identify potential problems before they become costly emergencies.

Why Acting Quickly Matters

Remember, roof leaks never get better with time. They can become worse very quickly, and even a relatively small leak can lead to catastrophic damage. If you leave a roof leak untreated, it can lead to structural failure.

Delaying roof repairs often means higher costs later. Water damage can affect insulation, structural timbers, electrical systems, and interior finishes. What starts as a minor repair can quickly become a major renovation project.

Finding the Right Roofing Company

When you need roof repairs, choose a company that offers:

  • Free, no-obligation inspections
  • Emergency callout services
  • Professional certifications (such as CORC membership)
  • Comprehensive insurance coverage
  • Written guarantees on work completed

Your roof is your home’s first line of defence against the elements. By recognising these warning signs and acting promptly, you can protect your property and avoid costly emergency repairs. When in doubt, always err on the side of caution and contact a professional roofing company for an assessment.