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    When Should Your Roof Be Replaced?

    Although various factors such as materials, weather, and sun exposure can cause your roof’s lifespan to vary, most experts recommend replacing your roof every 20 years or so. If you don’t know how old your roof is, examining the shingles for signs of wear and tear can be a great indicator, or you can contact our team to evaluate it. Repairs, proper care, and maintenance can extend the life of your roof, but if you’re experiencing frequent issues like missing shingles or leaks, it’s a sign that your old roof is no longer fit for the job.

    When should your roof be replaced_ - Roofrepairperth

    7 Signs You Need Roof Replacement

    • Shingle edges are curled or shingle tabs are cupped.
    • Bald spots where granules are missing.
    • Cracked shingles.
    • Your roof is at least 20 years old; while many shingles today are produced for durability, many factors can accelerate the aging of shingles.
    • The roof just looks old and worn.
    • Neighbors are getting new roofs. Homes built around the same time period can be experiencing the same types of weather conditions can mean that your roof is nearing its useful life.
    • Dark streaks. Airborne algae cause dark streaks on roof decks. While this may not necessarily harm the roof shingles, it may not look good. Algae streaks can be removed using a 50:50 blend of water and bleach sprayed on your roof. It is important to use a low volume garden hose so you do not knock the protective granules off your shingles. It is also important that you protect your landscaping from the bleach run-off.
    • Moss can grow on roof surfaces that don’t get much sunlight, especially in cool, moist climates. Moss growth can be more than a cosmetic issue. Moss holds moisture against the roof surface and overtime in freezing climates can cause damage to the granules on the top of the shingles. Moss can be brushed off but it won’t prevent it from growing again; take care not to damage the shingle surface. You may need to contact a professional roofing contractor.

    Our Roofing Services

    No matter how big or small the project may we – we are the roof service company to turn to!

    Roof Repair Perth is one of Perth’s most reputable and reliable roof service companies. Not only are we the most skilled, experienced and knowledgeable team of experts, but we are also widely praised for our unique array of roofing services. 

    Our Roofing Client Reviews

    • Client Image

      These guys are great. They came quickly to give an estimate, and the price was great. We scheduled quickly for the job. They worked quickly and efficiently. They were very clean! Both on the roof and in our house; they left no dirt or tar and anything anywhere. They are professionals, they are conscientious. I highly recommend them.
      • Greg Mitchell
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    • Client Image

      Roof Repair Perth was able to repair the leak on my roof after all the heavy rains that we just had. The service was excellent! I would recommend this company.

      • Renee Summerbloom
      • Ratings

    Contact The Most Trusted Roof Repair Company in Perth

    FAQ's About Roof Repair


    A typical all-perils homeowners insurance policy does cover your roof and the cost of replacing it if it gets damaged. That's good news. But usually, you're covered only if the damage or destruction results from a sudden accident or act of nature.

    Problems that ensue from general wear and tear or from a roof that has exceeded its intended life span are not eligible for reimbursement because they fall under the general maintenance responsibility of the homeowner.


    Many factors will affect the cost of roof replacement, but some general costs for a three-bedroom house may be:

    • $6000 to $10,000 to replace metal roofing with Colorbond
    • $15,000 to $20,000 to replace an asbestos roof with Colorbond
    • $20,000 to replace a tiled roof with Colorbond
    • Concrete tiles cost between $40m2 and $60m2
    • Tiled roofs cost between $80m2 and $120m2 depending on the pitch of the roof and other factors
    • Slate roofing costs between $200m2 and $500m2: the high end of the scale is for premium slate

    These are the cost of materials and labour for a roof replacement but may not include other costs such as structural work or removal of the old roof. When you get quotes, ask for itemised quotes so you know what you're paying for.

    • The cost of removing your old roof
    • The cost of sending the old roof to the tip
    • Structural work
    • Replacing the roof

    Some roofers will also install guttering and insulation, but these may cost more.


    The time it takes to replace a roof depends on several factors. Such factors include:

    • Type of roofing materials used. 

    Roofing materials are different in type and style. Common roofing types include wood shakes, synthetic slate, flat roof, concrete tile, steel sheets, asphalt shingles, and natural slate. 

    Type of roofing materials

    Average replacement (days)

    Wood shakes 

    3 – 4

    Synthetic Slate

    3 – 5

    Flat roof

    2 – 3

    Concrete Tile

    8 – 9

    Steel sheets

    3 – 4

    Asphalt shingles

    1 – 2

    Natural Slate

    6 – 7

    For the estimation above, the crew size considered is of five people and the area considered is 35-40 sq. ft. All other conditions, such as availability of materials, inspection time, weather, and so on have been favourably considered. 


    Roof replacement is an important investment. The good news — there are plenty of financing options available to make sure you’re not breaking the bank, shingle by shingle.

    Financing a new roof, with the option to pay in instalments, is how many homeowners get the roof they need when a roof replacement can’t be put off any longer. 


    Investors often confuse repairs and maintenance and capital improvements. Both are legitimate tax deductions, but they are treated differently when recording your deductions for tax purposes each year.

    Capital improvements and additions to your residential property are improvements made to an asset that is beyond the condition of that asset at purchase. Examples of capital improvements include things like replacing a roof, repiering the whole house, replacing walls, adding rooms, replacing fences, repainting, or replacing assets such as ovens, cooktops, range hoods, blinds, carpets. 


    Should your roof be needing complete replacement, the solar panels will have to be removed. This is a great time to assess their efficiency and possibly upgrade should you require. Roof Repair Perth will ensure your roof is replaced quickly and professionally to ensure there is no significant inconvenience to you or your family and can advise the best method to take in regard to your solar panels.


    Slate, copper and tile roofs can last more than 50 years. Homeowners with wood shake roofs should expect them to last about 30 years, while fibre cement shingles last about 25 years and asphalt shingle/composition roofs last about 20 years.

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