Mon - Fri: 7:00 AM - 6:00 PM

The upkeep of gutters and downpipes on the roofs of homes is a constant and essential concern for homeowners today. In order to ensure ongoing roof protection and the good working condition of your gutters and connected pipes, it is essential to schedule regular periodic inspections of your home’s roof areas and gutter systems throughout the year.

Only by engaging experienced experts in the professional roofing and gutter systems installation, maintenance and repair industries can you be assured that your home, its roof and gutter systems are damage-free and clear of tree branch twigs, dried leaves and other debris that can clog gutters and pipes, causing hazardous water buildups that can result in serious damage to your roof and gutter systems. 

Ways in Which Old and Damaged Gutters and Downpipes Can Affect a Newly Installed Roof

If your home’s gutters and downpipes are worn-out or damaged, they can seriously affect your newly installed roofing in the following ways:

• Water Pooling Damage. Excessive pooling of water on areas of your roof can occur when gutters and drain pipes become clogged with debris and cannot drain accumulated water from your roof during and after heavy rain or snowstorms. This pooled water can result in water leaks beneath roofing materials, damaging the underlying roof structure. This excess water can also leak into the ceiling of your home’s attic or top floor, causing damage to the interiors of your rooms. 

• Moulding or Rotting of Roofing Materials.
When water accumulations cannot drain from your home’s roof areas, roofing materials can become saturated and begin to develop mould and mildew. If left unattended over time, these water-soaked sections of your roof can weaken and rot, deteriorating to expose the supporting under-structure of the roof. Mould is a fungus that grows and spreads rapidly in damp or wet conditions, and this spreading mould will eventually cause irreparable damage to large sections of your roof. This may require the costly installation of an entire new roof on your home. 

• Dislodged Roof Tiles. Especially if you live in a very mild climate where attractive terracotta tiles are commonly used for roofing, you will enjoy the advantage of the adaptability of these clay-based tiles to absorbing water without being damaged and to dry out rather quickly under sunny skies. However, if your gutters and downspouts become clogged or damaged and water collects on the roof, seeping beneath the tiles, these tiles can become dislodged and fall from your roof, cracking and breaking while creating a hazard to anyone walking or standing near your home.  

By contacting our roofing installation and repairs experts at Johnson Roofing located in Albany, Auckland, NZ, and serving all surrounding regions, you can obtain top-rated inspections and maintenance for your home’s roof, gutters and downpiping. Our experienced professionals are prepared to install new roofing, repair damaged roofs and provide regular upkeep services to ensure that you always enjoy a safe, attractive and protective home roof with well-maintained and working gutters, drains, downspouts and connected piping. 

While you may be familiar with other roofing materials, you might not be with flashing. It is crucial to the integrity of your roof since it reinforces joints, valleys, walls, chimney areas and edges to prevent leaks. Flashing installs in an overlapping fashion that guarantees water cannot be trapped. Various materials are available for use as flashing. The one that is right for your house depends upon your budget, durability needed, how visible it will be and the other materials that the flashing will come in contact with on your roof. We discuss some of the best materials for flashing in the following.


Aluminium is a durable, versatile material and is suitable for numerous flashing locations, including in the valleys, around the chimney and at the walls or step-up areas. It comes in pre-formed shapes, sheets and rolls, so it can be customised when necessary. One advantage of aluminium is that it is a moderately priced material for flashing. Other benefits are that it is mouldable around corners or to conform to various angles and it holds its shape effectively. A downside to this material is that the uncoated version of it should not come into direct contact with mortar and cement since their alkalinity will corrode this material. In these situations, only coated aluminium should be used.


For a pricier, highly durable flashing option, turn to copper. It is resilient in all situations, including valley flashing with tile, chimney flashing, wall intersections, ridge areas and more. Copper can be fabricated into continuous, rigid custom shapes when needed. Flashing in this metal also comes in a lead-coated option as well, and this style is ideal for marine areas. With correct installation, it will last for years. Installation is easy due to the fact that it is a moderately pliant metal.

Stainless Steel

Stainless steel is an extremely resilient flashing material and is suitable for the harshest of environments. The price of it is comparable to copper flashing, placing it in the premium category of materials for this use. Typically, it is installed for base flashing, counter flashing and valley flashing. It comes in sheet form in both 18 and 24 gauges. One major advantage of stainless steel is that it is the flashing material that is least affected by salt spray, acid rain or other environmental corrosives. Also, it can be placed right against mortar and concrete since the alkalinity of these elements will not negatively affect it. A disadvantage of this material for flashing is that it is labour-intensive to install, which increases its already expensive cost.

To learn additional facts about what the best materials are for flashing, turn to Johnson Roofing. We are specialists for the installation, repair and maintenance of roofs.

According to statistics, the most common damage that happens in a house or other structure during windy weather is in the roofing systems. For this reason, property owners should ensure that their roofs will stand up as resiliently as possible in high wind conditions. To accomplish this goal, you need to look at not only the roofing material but also at the construction of it. While certain roofing systems fall short of being durable in high winds, standing seam metal roofing systems are not among them.

Styles of Metal Roofs Are Not All Equal in Durability

You can find metal roofs made to look like shingles or tiles today. Also, there are ones that have exposed fasteners. None of these perform as well as the standing seam ones do in windy conditions, though, due to their construction.

The Metal Panels Must Be Top Quality to Withstand the Impact of Heavy Winds Durably

Another influence on how durable standing seam roofing systems are in high winds is their quality. You should never choose a roofer on price alone. Select one that uses only the best of materials for installing this style of roofing system on your house or building.

Standing Seam Metal Roofing Systems Need to Be Properly Installed to Ensure Their Wind Resistance

On top of the metal panels being high quality, the installation needs to be skilfully performed in the right fashion for your specific roof to guarantee it holds up in wind as well as possible. This includes all structural components, flashing, metal panels, fasteners, gutters and more. The roofer also should customise the installation to suit the pitch of your structure. If the fasteners are placed too far apart, it reduces the ability of the standing seam roof to handle the impact from heavy winds. The spacing should be from 7 cm to 30 cm, depending on the wind load that the roof must handle. Also, the ribs need a spacing of 30 cm. You might think the standing seams will be a problem, but the opposite is true since they actually have a strong influence on the wind resistance of the roof.

Turn to a Reputable Company for Your Standing Seam Metal Roof

The only way to guarantee that you will receive a quality standing seam roofing system is to rely on a reputable roofing company to install it for you. Johnson Roofing is one such company, and we will answer all your questions before we design and install the ideal standing seam metal roof for your structure. All work and materials come with a guarantee for your protection.

One of the most crucial components of your home or building is the roof since it prevents natural elements from damaging exterior and interior areas of it. Sadly, there are plenty of shoddy, low-quality roofers out there who are just out for your money and not dedicated to delivering quality results. They leave numerous signs of a bad roofing job in their wake that are good reasons for you to hire only a reputable roofing contractor to repair or replace in case you have an issue with your present roof due to poor workmanship or materials. We share some of these signs with you in the following information.

Your Original Issue Still Exists

A major sign of a poor roofing job is when your original issue still plagues you. Whether it is a leak or other problem, a roofer should remedy it completely before he signs off on your projects.

Roofing Material Is Misaligned

Regardless of the type of roofing material that the roofer installed on your house or building, it should be aligned in the proper manner for the integrity of the roof as well as its overall appearance. Anything less than this, you will need to call out a reputable roof contractor to solve the issue.

Stains Are Present

When stains are present on the roof’s exterior surface, this is a sign that the water is not draining properly off the roof. On the other hand, if there are stains on the underside of its structure, it is a sign of leaks. The latter is usually only detectable if you have an attic or the water seeps down into your ceilings.

Improper Installation of Flashing

Flashing is critical to protecting specific areas, such as at the base of a chimney or the peak of the roof for just two examples. It must be adhered in place securely to prevent leaks and other problems.

No Drip Edge

The absence of the drip edge will cause run-off water to damage the fascia that is just below the edge of roof and all the way around your structure. It should be installed between the roofing material and the underlayment.

Sheathing Is Warped

Warpage is an additional sign of a bad roofing job. Typically, this is not on the top layer of your roof but is in the sheathing. Sheathing is commonly of timber, and it should never be warped. Any quality roofing contractor will replace it rather than leave it in this condition.

Turn to Johnson Roofing to learn additional facts about the signs of a bad roofing job that are reasons to hire a reputable roofing contractor. We specialise in installing metal roofs on commercial buildings and homes in a quality manner.

Years ago, the only places where you saw metal roofs were farmhouses, barns, commercial buildings and utilitarian structures. This is no longer the case due to the many innovations in materials, styles and colours for these roofs. With this being said, you may still be hesitant to choose metal roofing for your contemporary home due to the fact that you only know about the exposed fastener style. We are here to explain that there are other styles of metal roofs today with one of the most popular ones being the standing seam metal roofing that is ideal for contemporary houses. To learn additional facts, read the following.

What Is Standing Seam Metal Roofing?

Standing seam roofing consists of panels that interlock to form a raised, self-healing rib. When joined, they form a watertight seal that helps water flow from the roof effectively during a storm. This type of roof also uses a special locking system that does not leave any fasteners exposed on the surface to cause possible issues as their washers age and decay.

Standing Seam Metal Roofs Last Longer on Your House

Metal roofs of the standing seam style have a longer lifespan due to the fact that they have less risk of developing leaks. When the fasteners, washers, or the surrounding area age, leaks develop quickly. As water seeps into the roof’s structure, you will need to repair or replace it quickly. You will receive much more use from a standing seam metal roof before you have to take this action. Roofs of this style may last for at least 50 years if not longer.

You Receive a More Attractive Roof With the Standing Seam Style

It not only does away with the exposed fasteners, but the standing seam style of metal roofing also provides an elegant appearance to the roof of a contemporary house. The ribs where the sections join help create the ‘in-the-now’ look of the finished roof. In fact, the straight, clean vertical layout of the panels is eye-catching and increases the attractiveness of your entire house and not just the roof. Your curb appeal will hit a new high, which may bring you additional funds if you decide to sell your home in the future.

Rely on Johnson Roofing for further information about how standing seam metal roofing is an elegant and cost-effective roof for contemporary homes. We specialise in re-roofing, new roofs and roof maintenance for this style of metal roofs. Our company provides our services to commercial, industrial and domestic clients.

Today, metal roofing is more attractive and durable than ever before in the history of it. This is due to the fact that there have been numerous innovations not only in the metal roof materials, but also in the other components that are necessary for a quality installation. One such component is the underlayment material. Since there are different types of underlayment, you must choose the right one to ensure that your metal roof is as durable as possible. When you fail to do so, you leave the roof at risk of exposure to damaging elements such as moisture, chemicals and resins. We share further facts in the following to help you make an educated decision.

What Is the Purpose of Underlayment?

An underlayment separates the sheathing and other structural roof components from the surface roofing material. Its purpose is to provide protection to all of the structural components from potentially dangerous substances including moisture, resins and chemicals. This ensures that the roof’s support system last for as long as it should for the house or building.

The Different Types of Underlayment

1. Felt underlayment is probably the most well-known and affordable underlayment on the market at present. It is made from asphalt-soaked felt and can be of natural materials such as wood cellulose or synthetic ones such as fibreglass. This underlayment does not offer high-quality resistance to moisture migration or incoming air. As a result, it needs to be installed on roofs with a suitable pitch that will not suffer significant moisture loads. However, it is ideal to use with ice dam protection at certain critical points on the roof in cold environments.

2. Synthetic underlayment is made of polyolefin, polypropylene or polyethylene usually and ranges in thickness from eight to 30 mils. In comparison to felt underlayment, synthetic underlayment is at less risk of wind damage and lies suitably flat after installation. Similar to the felt underlayment, it is an affordable option. Also, is it suitable for cold weather installation and as a moisture barrier? It does not qualify as an air barrier, though, for your roof.

3. Self-adhering membrane underlayment is a polyethylene sheet with a butyl-based or rubberized-asphalt based adhesive on it. Roofers install this product by peeling off the backing and sticking it to the roof deck or sheathing. It is extremely effective protection for standing-seam style metal roofs where ice dam protection in a must in various areas of the roof. This style of underlayment can be installed in environments that reach temperatures as high as 115-degrees Celsius. On top of all of this, this underlayment qualifies as both an air and a moisture barrier.

For further guidance on the importance of choosing the right underlayment for your metal roof, consult with Johnson Roofing. Our company has the expertise to ensure that you receive the right one for your needs and situation.

When you own an industrial building, it is crucial to keep it in ideal condition all throughout the year. This includes the roof since it protects the rest of the structure from the outdoor elements. For this reason, you should inspect your roof periodically to ensure that there are no leaks anywhere on it. If you find any leaks, you need to act quickly and treat even small ones as emergencies. Also, you should entrust repairs of these emergency leaks to only professionals for optimal results.

The Damage That Roof Leaks Cause Industrial Buildings

• Structural issues start with the roof, its sheathing and other components. They can spread quickly to other parts of the industrial building from these into the framework.

• Interior damage beyond the structural components also will happen if you do not hire professionals to repair the leaks as soon as possible. Water seeping into the building can soften plasterboard to the point of it crumbling. It also can stain the ceilings, and in severe cases, it will damage the flooring.

• Mould and mildew growth spreads rapidly in the moist environment that the roof leaks create. These elements not only are unsightly, but they also can taint the air quality on the interior of your industrial building.

• Damage to equipment and inventory is extremely common with roof leaks, especially when you do not notice them in time.

• Roof leaks can cause standing water on the floors, and this is a safety hazard. Employees, clients and visitors can slip or fall and injure themselves.

Repairing Water Damage Is Expensive

Hiring repairs of the above damage that water damage can cause in your industrial building can be quite costly, depending upon the severity of the specific damage. This will lower your company’s profitability.

Professionals Will Repair the Roof Leaks Correctly the First Time 

Roofs are such complex structures with numerous layers of materials that any emergency industrial roof leak repairs must be entrusted only to professionals. They are the ones with the right knowledge and skills to restore your roof to its ideal condition. Also, you will receive a guarantee to protect your company. In comparison, if you attempt the repairs and fail, you will need to shell out additional funds to solve the problem.

For further facts about why you should trust only professionals to perform emergency industrial roof leak repairs, consult with Johnson Roofing. We provide 24/7 leak repair services for commercial, industrial and residential roofs in the Auckland area. Our company will come to your property as quickly as possible upon request.

Metal roofs are highly durable and attractive today for all types of structures. When choosing one for your own building or home, though, you need to know the difference between standing seam roofing and exposed fastener roofing, which are the two types of metal roofs. While each style is popular and durable, the two vary from each other in significant ways. As a result, one may better suit your needs than the other does for your structure. Read on to learn further details about each of these styles.

What Is Exposed Fastener Roofing?

An exposed fastener roofing system with metal consists of panels that are fastened to the sheathing directly on the face of the metal without hiding the heads of the screws, thus, the name. All panels overlap each other where the roofers insert the fasteners.

Advantage and Disadvantages of Exposed Fastener Roofing

One major benefit of the exposed fastener roof is that it is less expensive than one with standing seams. There is no seaming required, which means the roofing crew can install one of these roofs in less time, and this makes for a less labour-intensive installation process. While this style of roof performs well in many situations, it does not come free of issues. You have numerous roof penetrations with the exposed fasteners for one issue. Also, problems can occur with the fasteners, such as fastener withdrawal, UV degradation of the fasteners’ washers and improper fastener installation. The warranty may not include a guarantee of water-tightness.

What Is Standing Seam Roofing?

With a standing seam roof, the fasteners are concealed from view. The panels are flat with vertical legs, and it is these legs that are raised seams after installation. All panels are installed into the decking with either a clip or fastener flange. Since there are no fasteners showing, this roof is more attractive than the exposed fastener roofing is architecturally.

Pros and Cons of Standing Seam Roofing

Advantages of the standing seam roof include no exposed fasteners, water-tight warranties, improved thermal performance and a longer lifespan. Disadvantages of this style of metal roof include higher cost due to labour-intensive installation, fewer qualified contractors available for professional installs of this roof and it is not suitable for a flat roof. Note here that since this style of roof lasts longer than the exposed fastener one does, it makes up for the higher cost of installation.

For further information about the differences between standing seam roofing and exposed fastener roofing, consult with our company, Johnson Roofing. We specialise in installing metal roofs along with performing roof maintenance. Our experts will guide you on which style of metal roofing is ideal for your home or building and your budget.

A metal roof is highly durable when it contains quality materials and workmanship. One important part of its makeup is the fasteners or screws that need to hold it securely. Without the right screws, the roofing components will not stay in place during harsh weather. For this reason, roofers need to ensure that the fasteners are completely compatible with the metal roofing that they are installing on any type of structure. Manufacturers of metal roof materials typically recommend specific screws to use with their products, but when these are not available professionals need to understand how to substitute appropriately to avoid issues.

Problems Caused With Metal Roofing by Incompatible Fasteners

1. When the screws are not compatible with the profile of the metal roof, they will not sit flush to the surface of the roof. This will prevent the washers from attaching in the proper way to keep water from seeping in the fastener holes. The result is roof leakage.

2. If the fasteners are not compatible length-wise, they will not screw far enough into the sheathing to hold the metal sheets in heavy winds. The roofing materials will blow off the roof in severe cases.

3. The wrong fasteners also may not be rated for outdoor use. When roofing contractors make this major mistake, the screws can rust and weaken. It will require major funds to call a different crew out to remedy the situation.

4. Another issue that can happen due to incompatibility of the screws is the fact that they will show and spoil the appearance of the entire metal roof. To prevent this issue, the right head should be on the fasteners to ensure that it does not negatively affect the look of the roof. Screws can contain flat heads, hex heads, wafer heads, pancake heads or other types of heads.

5. The threads should be strong enough to hold the specific metal roofing on the roof during all types of weather. When the screws have the right thread configuration, they have high-pullout strength, which is extremely durable.

Tightening the Compatible Fasteners Correctly Also Is Important

Over driving screws into metal roofing will dent the material. Under driving them or driving them in crooked can leave gaps for water to seep through and into the rest of the structure. Other issues also can occur with poorly installed fasteners.

For further facts about the importance of compatibility for metal roofing and fasteners, contact Johnson Roofing. We are experts at installing metal roofs. Our company uses only the highest-quality materials and techniques with all of our roofing projects. For your protection, we guarantee our workmanship and materials.

While metal roofing is highly durable, lightweight, attractive and long-lasting, many homeowners will not choose it for their homes since they fear it is more at risk of lightning strikes in comparison to other roofing materials. If you are in this group of homeowners, you may wonder if this roofing turns your home into a lightning rod. The quick answer to this is a simple ‘no.’ To further your knowledge on this topic, we offer the following FAQ about metal roofs and lightning.

Question: Does Metal Conduct Electricity?

Answer: Metals, such as zinc, steel, and copper, do conduct electricity effectively and efficiently. In fact, copper has been part of electrical wiring for years due to this fact.

Question: Is Metal Roofing More at Risk of Lightning Hits Than Other Roofing Materials Are on Houses?

Answer: Even though the materials in metal roofing are conductive with electricity, they are not at higher risk of lightning strikes than any other roofing material is on homes. Experts agree that this is no reason to fear installing a metal roof on your home when it comes to a lightning risk.

Question: Does Location or Size Have Anything to Do With a Risk of Lightning Strikes?

Answer: Lightning does tend to hit the highest point of a location. For this reason, the location of your house can have more of a bearing on whether you are at risk of lightning hits than which roofing material you install on it. In addition to this, a large home provides lightning with more of a target than a small house does, so this may have an influence on how at risk your house is for lightning strikes. There are protective measures you can take at present, though, to lower this risk, but you do not need to avoid metal roofing.

Question: Are Metal Roofs Safer When Hit by Lightning Than Certain Other Roofs Are?

Answer: Yes, metal roofing is safer in a lightning strike than some other types of roofing materials are. Metal roofing disperses the electricity of the strike quickly; and it is also flameproof. A metal roof does not catch fire even when hit with the intense heat from lightning.

For additional details about whether metal roofing will turn your home into a lightning rod, rely on Johnson Roofing. Our company performs roof repairs, installation, and maintenance to both residential and commercial clients here in the Auckland area. We supply durable, quality roofing materials and workmanship, and we also issue a guarantee with each job that we perform.