Products

ROOFING AND WATERPROOFING PRODUCTS

DRS is one of the fastest growing and most significant, innovative, and comprehensive roofing and waterproofing company in Dunedin. We understand how critical it is for businesses to have a metal roof, flat roof or cladding that maintains a dry, attractive, and functional building. If you own a commercial or residential building and are looking for a long-lasting roofing or cladding option, which will add value to your property, a DRS custom roofing and cladding solution is perfect for you!

We plan each custom roof and cladding project from start to finish. With proper planning, the best New Zealand metal, and superior production processes, we can deliver a very competitive price point.

Moreover, building owners must consider a variety of factors in selecting the right metal roofing, flat roofing and cladding products: life cycle cost, maintenance and repair costs, durability/longevity, resale value, eco-friendly materials and other concerns.

METAL ROOFING PRODUCTS

COLORSTEEL has been utilizing the abundant New Zealand ironsand for more than four decades to produce top-notch, long-lasting steel. By transforming metal into something enchanting, they provide an ideal combination of design versatility, sturdiness, and resilience to safeguard the areas where New Zealand residents reside, labour, and enjoy recreational activities.

Our products are made from premium-grade steel, ensuring that they are strong, long-lasting, and capable of withstanding extreme weather conditions. We pride ourselves on delivering roofing solutions that are not only functional but also visually appealing, adding value and aesthetic appeal to your property.

WARM METAL ROOF

METAL ROOF

ACOUSTICS BOARDS, ROOF BOARDS AND INSULATION

METAL CLADDING

GUTTER, SPOUTING AND FASCIA

SHINGLE ROOF, SLATE ROOF AND CLEAR LIGHT ROOFING PRODUCTS

If you need a new roof, it’s not something you can put off. Your roof is responsible for protecting your home from the weather. If it’s not doing its job, your home could be susceptible to expensive water damage. Prevent that by replacing your old, worn, or damaged roof with Dunedin Roofing Systems.

ASPHALT SHINGLES AND SLATE TILE ROOF

CLEAR LIGHT ROOF

FLAT ROOF WATERPROOFING MEMBRANES

Flat roof waterproofing membranes are materials used to protect flat roofs from water penetration, preventing leaks and damage to the building structure. These membranes are designed to be flexible, durable, and resistant to various weather conditions. They are an essential component in maintaining the integrity of a flat roof system. There are several types of waterproofing membranes used for flat roofs, and some of the most common ones include:

1- Butynol (Synthetic Butyl Rubber) Membrane:
Butynol membranes can be installed using various methods, such as fully adhering the membrane to the roof substrate or mechanically attaching it. These membranes are typically applied in sheets, with the seams heat-welded or sealed using adhesives to create a watertight bond. The sheets come in different thicknesses and widths, providing options for various flat roof applications.

2- EPDM (Ethylene Propylene Diene Monomer) Membrane:
EPDM is a synthetic rubber material that is highly flexible, resistant to UV radiation, and has excellent weathering properties. It can be installed either by fully adhering it to the roof surface, mechanically attaching it, or using a ballasted system. EPDM membranes are available in different thicknesses and widths, providing a variety of options for various flat roof applications.

3- TPO (Thermoplastic Olefin) and PVC (Polyvinyl Chloride) Membranes:
TPO and PVC are thermoplastic single-ply membranes that are heat-welded at the seams, creating a strong and watertight bond. Both materials are resistant to chemicals, UV radiation, and punctures. TPO is more environmentally friendly, while PVC is known for its durability and resistance to fire. They can be mechanically attached, fully adhered, or installed using a ballasted system.

4- Modified Bitumen Membranes:
Modified bitumen membranes are made from asphalt that has been modified with either atactic polypropylene (APP) or styrene-butadiene-styrene (SBS) to enhance flexibility, durability, and resistance to temperature fluctuations. These membranes are typically installed by torch application, hot-mopped, or self-adhered. They are often used as a top layer in built-up roofing systems, providing additional waterproofing and protection.

5- Liquid Applied Membranes:
Liquid applied membranes are coatings that can be applied directly to the roof surface, forming a seamless, waterproof barrier. These membranes are typically made from materials like acrylic, silicone, or polyurethane. They are applied by spraying, rolling, or brushing onto the roof surface and can be reinforced with fabric or mesh for added strength. Liquid applied membranes are suitable for irregularly shaped roofs and offer excellent UV and weather resistance.

Proper installation and maintenance of flat roof waterproofing membranes are crucial in ensuring their effectiveness and longevity. Always consult with a professional roofing contractor to determine the best membrane type for your specific project and to ensure proper installation.

WARM METAL ROOF

GREEN ROOF, GARDEN ROOF, LIVING ROOF, BALLASTED SYSTEMS

FLAT ROOF SYSTEMS

DECK, BALCONY AND OTHERS

BELOW GRADE AND BELOW GROUND WATERPROOFING

Below grade and below ground waterproofing refers to the protection of underground structures and areas of a building located below the ground surface from water intrusion and damage. This is a critical aspect of construction, as water can cause structural deterioration, mold growth, and other issues that can impact the building’s durability, safety, and value.

There are several methods and materials used in below grade and below ground waterproofing, which can be divided into two main categories: positive and negative side waterproofing.

1- Positive Side Waterproofing:
This method involves applying waterproofing materials to the exterior side of the structure that is in direct contact with the water source, such as groundwater or rainwater. It is typically done during the construction phase. Some popular positive side waterproofing techniques include:

• Sheet Membranes: These are prefabricated sheets of waterproof material, such as rubber, PVC, or HDPE, that are mechanically fastened or adhered to the exterior of the structure. They provide a barrier against water intrusion and are resistant to chemicals, hydrostatic pressure, and punctures.
• Liquid-Applied Membranes: These are coatings made of materials such as asphalt, rubber, or polymer-based compounds that are applied as a liquid and then cure to form a waterproof barrier. They are typically sprayed or rolled onto the surface and can conform to irregular shapes, making them versatile.
• Bentonite Clay Waterproofing: Bentonite, a natural clay material, has excellent swelling properties when it comes into contact with water. Bentonite waterproofing systems consist of panels or sheets that are installed on the exterior of the structure. When they come into contact with water, the bentonite swells, sealing off any gaps or cracks.

2- Negative Side Waterproofing:
This method is applied to the interior side of the structure, opposite the side that comes into contact with water. Negative side waterproofing is often used in situations where positive side waterproofing is not feasible or practical, such as in existing structures or when space is limited. Some common negative side waterproofing techniques include:

• Cementitious Waterproofing: This involves applying a cement-based waterproof coating to the interior surface of the structure. The cementitious materials bond with the substrate, forming a durable and resistant barrier against water infiltration.
• Crystalline Waterproofing: Crystalline waterproofing materials are composed of chemicals that react with the concrete’s natural minerals, forming crystals that fill and block the pores and capillaries within the concrete. This process makes the concrete structure itself watertight, preventing water penetration.
• Injection Grouting: This method involves injecting waterproofing materials, such as epoxy or polyurethane, into cracks or voids in the concrete structure to seal them and prevent water ingress.

In addition to these methods, proper drainage systems and water management techniques should be implemented to control and redirect water away from the below-grade or underground structures. This includes installing drainage pipes, sump pumps, and other measures to ensure the effective management of water around the building.

Proper selection and application of below grade and below ground waterproofing methods are crucial to maintaining the structural integrity, safety, and value of a building. These methods should be chosen based on the specific requirements of the project, the type of structure, and the environmental conditions.

TANKING WATERPROOFING PRODUCTS

Several considerations must be taken into account before making a decision regarding your roofing or waterproofing project. The knowledgeable team at Dunedin Roofing Systems can assist you in determining the optimal solution for your waterproofing requirements. So, don’t hesitate to reach out.