Clean Your Roof With NASAX Roofing specialist

Step-by-step checklist on how to clean your roof

It’s no secret that roofs play a very important role in our homes. Not only do they keep us warm and dry, but they also add to the overall aesthetic of our house.

That’s why it’s so important to make sure that we keep our roofs clean and in good condition. If you’re not sure how to clean your roof or what to look for when inspecting it, don’t worry – we’ve got you covered!

Nasax Roofing Contractor Roof Leak Repair and Roof Maintenance

As we approach the hotter months, it’s time to dust out your roofs

It’s important to clean your roof on a regular basis, and this is especially true as we approach the hotter months. The high temperatures and humidity can cause all sorts of problems, from mould and mildew growth to leaks and other damage. A good rule of thumb is to inspect your roof at least once a year and give it a good clean if necessary. Oftentimes, what you will need for this activity are things that you’re able to find readily around your house!

Additional Read: How does Singapore’s heat affect your roof?

Enemies that could damage your roof

One of the most common enemies of roofs that causes them to undergo wear and tear comes from the natural elements. As roofs are found usually on the outside, the damage that they take from the changing elements can cause them to be more prominent in leaking. Below are just a few examples of some common natural enemies of your roof!

Nasax Roofing Contractor Roof Leak Repair and Roof leakage Maintenance


Rain and hail are the most common natural form that causes your roof to sustain damage. Over the years, the constant pressure brought on by rain pelting down from the skies and onto your roof leaves the roof with bare spots when combined with strong winds. Long exposure and lack of inspection can also cause roofing shakes or shingles to crack. The impact on a roof can shatter the shingle’s surface, causing it to pull away from the underlying mat and expose the fiberglass. This, of course, introduces serious water damages and leaks into your house, as well as wood rot and mold formation.


While not as common as rain in Singapore, wind can also cause significant damage to your roof. Strong winds are able to lift shingles and tiles, exposing the surface below to the elements. If left unchecked, this extends the damage to not only the roof shingles but also to the underparts of the roof surfaces. When this happens, water from heavy downpours and other forms of debris will cause damage to your roof’s structure, and in extreme cases, may even enter your house, extending the damage from your roof to other parts of your house.


Algae is a small enemy in terms of size, but the impact of its damage on roof is extensive. Algae damages the shingles of your roof due to the fact that they slowly feed off on the asphalt’s shingles limestone. This process not only weakens the shingle, making it more prone to breakage, but it also hastens the aging process of your roof. In addition, the growth of algae on your roof can cause an unsightly appearance, making your home look old and rundown, lessening your roof’s ability to reflect sunlight, and causing more heat to radiate throughout your home making it hotter.

Ultraviolet Light

Ultraviolet light, or UV rays, is one of the main enemies of roofs. Asphalt shingles are made of a hydrocarbon base which is why over time, they oxidize and turn into a brittle state when exposed to oxygen. When this happens, your roof will not be as effective in reflecting sunlight and heat back up into the atmosphere. In addition, the UV rays can cause the shingles to dry out, making them more susceptible to cracking and breaking. Asphalt shingles that have been damaged by UV rays will also have a shorter lifespan, meaning you’ll have to replace them more often.


While they may not seem like it, trees could actually do a lot of damage to your roof. Overhanging branches can scratch or tear your roof’s surface when they come into contact with it. In addition, leaves and other forms of debris that fall from the trees onto your roof can clog up your gutters and downspouts, causing them to be less effective in draining water away from your roof. This can lead to moisture build-up on your roof, which can eventually lead to leaks and other forms of damage. In extreme cases, falling branches from trees could also puncture holes in your roof, causing extensive damage.

Nasax Roofing Contractor Roof Repair and Roof Maintenance

Your checklist on how to clean your roof

Now that you know the natural enemies of your roof, it’s time to take action and protect your investment by maintaining it. Here’s a step-by-step guide on how you can clean your roof and keep it in tip-top shape:

Cleaning the gutters

One of the most important parts of roof maintenance is cleaning the gutters. Clogged gutters can cause a lot of problems such as water build-up on your roof, which can lead to leaks and other forms of damage. In addition, it can also cause your gutters and downspouts to be less effective in draining water away from your roof. To clean your gutters, you’ll need a ladder, a bucket, gloves, and a hose.

Start by placing the ladder against the gutter and securing it with something heavy such as a sandbag or a brick. Then, put on your gloves and use your hands to scoop out all the debris from the gutter. Once you’ve removed all the debris, use the hose to flush out any remaining dirt and debris. Make sure to also clean the downspouts as they can also become clogged over time.

Trimming nearby branches

Another important part of roof maintenance is trimming nearby branches. Overhanging branches can scratch or tear your roof’s surface when they come into contact with it. In addition, the stacking of stray branches from nearby trees will undoubtedly clog up the gutters of your roof. Get your pruning shears and gloves to start trimming branches!

Washing away grime, dirt, and growth

Believe it or not, one of the easier methods to maintain your roof is your regular washing! To wash away grime, dirt, and growth from your roof, you’ll need a pressure washer or a garden hose with a nozzle attachment. You’ll also need a ladder to reach the higher parts of your roof. Start by wetting down the entire surface of your roof with either the pressure washer or the garden hose. Then, using a detergent specifically designed for roofs, apply it to the roof and scrub away any dirt or grime. Once you’ve removed all the dirt and grime, rinse off the detergent with either the pressure washer or the garden hose. Finally, use a brush to remove any remaining growth on your roof.

Look for gaps

One of the most important parts of roof maintenance is to look for gaps and holes. These gaps and holes can be caused by a number of things such as wear and tear, animals, or falling branches. Regardless of the cause, it’s important to repair these gaps and holes as soon as possible as they can lead to leaks and other forms of damage. To repair these gaps and holes, you can consider applying some roofing cement and a trowel. Begin by applying the roofing cement to the edges of the gap or hole. Then, use the trowel to spread the cement over the entire surface. Once the cement is dry, apply another layer if necessary.

Scan for signs of damage

Now that you’ve completed all the necessary steps to clean your roof, it’s time to scan for any signs of damage. Some of the things you should look out for include cracked tiles, missing shingles, and rust spots. If you notice any of these signs of damage, make sure to note them down and bring them up with your contractor when they come.

Additional Read: 5 Key Points of Roof Maintenance for Homeowners

Consult a roofing contractor on how you should optimally clean your roof!

By following this simple and easy-to-follow checklist, you can be sure that your roof will be in good condition for years to come!

We pride ourselves in being one of the best roof leakage contractors in Singapore with our highly professional team.

So what are you waiting for? Start cleaning your roof today!

Contact NASAX today for a contractor that can better assist you with regular maintenance of your rooftops!

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