New Home Builds
High-Performance Concrete Solutions for New Home Builds
Frequently asked questions
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Where can I get the SuperSlab Technical Manual?
You can download the latest version located in our document library.
Does SuperSlab improve insulation?
Yes. SuperSlab offers improved R-value and thermal mass, creating a warmer floor. SuperSlab+ enhances this further with a fully insulated or edge-insulated system that exceeds standard thermal requirements.
Are shear keys required with SuperSlab?
Not usually. Shear keys aren’t required under CodeMark unless specific seismic conditions apply. In seismic zones (e.g., Christchurch), shear keys are still recommended unless soil conditions indicate lateral spreading; however, this will be determined by an engineering team in the design process.
Is SuperSlab BRANZ appraised?
Yes, BRANZ appraisal No.964 (2017) acknowledges that a SuperSlab flooring system complies with the New Zealand building code. If a SED is required, PS1 and PS4 statements will be required when lodging a consent.
What is a PS1? A Design Producer Statement. This is confirmation from an engineer that it is designed to the New Zealand Building Code.
What is a PS4? A Construction Review Producer Statement. This is confirmation from an engineer that it has been constructed in accordance with the details shown on the consented documents relating to the PS1.
Do councils accept SuperSlab?
Yes. When CodeMark conditions are met, councils must accept SuperSlab. All supporting calculations and drawings are provided by the slab designer and can be submitted with your initial building consent or as an amendment.
How long does it take to get plans engineered?
If your site qualifies as ‘good ground’, engineering isn’t required under CodeMark. If an SED is needed, design generally takes 3-5 working days.
Does SuperSlab use more concrete than a standard slab?
SuperSlab includes rib structures that average around 125mm of flat concrete. However, this is offset by savings in:
- Excavation and disposal
- Hard fill requirements
- Block perimeter foundations
Is SuperSlab faster to install than conventional slabs?
Yes. Experienced contractors can install a SuperSlab in approximately 3 days. Traditional footings typically take around 2 weeks, resulting in significant time and labour savings.
Can SuperSlab be used on sloped sections?
Yes. SuperSlab works well on sloping sites. Minor steps can often be poured in a single pour. For more significant level changes, the retaining wall footing is integrated into the lower slab, reducing excavation. Stepped floors may require SED.
What’s the maximum weight SuperSlab can support?
The standard SuperSlab system is designed for 2.5 kPa (suitable for residential garage loads). With specific design input, the system can be upgraded to handle loads up to 10 kPa. Reinforcement and topping thickness may vary for heavier applications.
Can SuperSlab be used on soft ground?
Yes. SuperSlab can be used on sites with an allowable bearing pressure starting at 50 kPa (as per Table 1 in the SuperSlab Technical Manual). For other ground conditions, a Specific Engineering Design (SED) may be required. The system can also span between piles on poor ground or deep topsoil, making it suitable for a wide range of land classifications.
Can any builder install SuperSlab?
Yes, any qualified builder can construct a SuperSlab foundation when following the supplied plans and construction specifications.
Why choose SuperSlab?
SuperSlab is a fully engineered and compliant concrete foundation system. It offers time and cost savings, while enhancing energy efficiency and structural strength. SuperSlab is CodeMark certified and BRANZ appraised for peace of mind.
Can you use Ready Glow as an effective marker?
Ready Glow Domes and Discs are ideal solutions for providing a renewable ambient light source.
Can you use Ready Glow to create shapes or logos?
Yes. Ready Glow is ideal for this.
What colour is the Ready Glow during the day?
Ready Glow is off-white/light yellow in colour allowing it to blend seamlessly into surfaces.
What types of surfaces can the Ready Glow stones be used for?
Wherever you would like a unique design element and/or functioning renewable ambient light source.
Applications include:
Exterior: walls, patios, paths, stairs, driveways, concrete furniture
Interior: floors, walls, exits, stairs
Is Ready Glow toxic?
Ready Glow is a non-toxic, non-radioactive
photo luminescent aggregate.
What is the life span of Ready Glow?
Ready Glow will continue to function in a cementitious or resin-epoxy matrix for 15+ years.
How can I ensure my project maximises sustainability benefits?
Consider the construction sequence, the overall project timeline, and where program requirements or specific finish types are necessary.
For example, foundations and substructures can typically have lower carbon footprints for their respective grade, whereas elements requiring a quick formwork turnaround e.g., precast elements, are more sensitive to carbon optimisation.
Does low-carbon concrete take longer to cure?
Yes and no. The curing time depends on several factors, with raw material availability being a key one.
In the South Island, achieving lower-carbon outcomes often requires cement substitutions. Depending on the time of year, these substitutions may slightly impact the initial setting time. In the North Island, this is less likely due to the availability of low-carbon cements.
Our Plant Engineers can optimise curing times based on your specific construction circumstances.
Can low-carbon concrete be used for all types of construction?
Yes, it can. We first assess the structural application and program performance before optimising the carbon footprint of your project. Allied Concrete provides expert guidance to ensure the best fit for each project.
Is Allie available 24/7?
Yes! Allie is always available to assist you, anytime.
Who can use Allie?
Anyone looking for concrete product information, FAQs, or help navigating our site.
Does low-carbon concrete contribute to green building certifications?
Yes, using low-carbon concrete can help projects achieve Green Star, Homestar, and LEED certification points due to reduced embodied carbon.
How much CO₂ reduction can be achieved with low-carbon concrete?
Depending on the mix, CO₂ reductions of 20-80% can be achieved compared to standard concrete.
How does low-carbon concrete compare to traditional concrete in performance?
Properly designed low-carbon mixes offer comparable strength, durability, and workability to traditional concrete while reducing environmental impact.
What is low-carbon concrete?
Low-carbon concrete is designed to reduce carbon emissions by incorporating various methods, including the use of supplementary cementitious materials (SCMs), lower-carbon cement made in New Zealand, sustainable aggregate sourcing, and other initiatives.
Can I apply multiple coats of Ready Concrete Sealer?
Yes, applying multiple coats of Ready sealer can enhance the protection and appearance of your concrete surface. Follow the product instructions for recommended drying times between coats to ensure optimal performance.
What are the benefits of using Ready Thinners?
Ready Thinners are used to adjust the viscosity of sealers and other concrete treatments for easier application. These concrete thinners allow for smooth and even coverage, helping to achieve a professional finish.
What is the best acid wash for concrete in New Zealand?
We stand behind Ready Acid Wash as the best concrete acid wash in New Zealand. Its concentrated formula effectively removes stubborn stains, efflorescence and salts, preparing concrete surfaces for optimal sealer adhesion.
How do I apply Ready concrete sealers?
Applying Ready concrete sealers is straightforward. Here are the detailed steps:
- Clean the concrete surface thoroughly to remove any dirt, oil or debris. Use a pressure washer for best results, and allow the surface to dry completely.
- If using the sealer on new concrete, treat the surface with Ready Acid Wash, a popular concrete acid wash in New Zealand, to remove latence and salts. Follow the detailed instructions for applying acid wash.
- Stir the sealer well before use to ensure an even consistency.
- Use a roller or sprayer to apply the sealer evenly across the concrete surface. Apply in thin, even coats to avoid pooling and ensure thorough coverage.
- Allow the first coat to dry completely, typically for 24 hours. Avoid foot traffic on the surface during this time.
- Apply a second coat if necessary, following the same method. Allow it to dry completely.
- Let the concrete sealer cure fully before exposing the surface to heavy traffic or harsh weather conditions. This can take up to 72 hours.
By following these steps, you will achieve a durable and long-lasting finish on your concrete surfaces.
Can I use Ready Products on old concrete?
Yes, Ready Products can be used on both new and old concrete surfaces. For old concrete, keep the surface clean and free of contaminants before applying the concrete sealer, acid wash or thinner to achieve the best results.
Why is Ecrete™ important for sustainability?
Ecrete™ is our low-carbon concrete solution designed to significantly reduce the carbon footprint of construction projects, contributing to more sustainable building practices.
How do I request an EPD On-Demand?
You can request an EPD On-Demand by filling out the form on our website here. We’ll then create a customised EPD for your Ecrete™ project.
What certification does EPD On-Demand have?
EPD On-Demand comes with a third-party verified EPD Process Certification. This certification ensures that all environmental data provided is accurate, reliable, and meets the highest standards of quality. You can trust in Allied Concrete’s commitment to transparency and sustainability. For more information on EPDs and their importance in sustainable construction, visit EPD Australasia.
How is EPD On-Demand different from the previous EPDs offered by Allied Concrete?
While our previous EPD covered entire concrete mixes, EPD On-Demand is specifically tailored to projects using Ecrete™, offering project-specific data on carbon savings.
What is an Environmental Product Declaration (EPD)?
An EPD is a standardised document that provides detailed information about the environmental impact of a product, including its carbon footprint.
What is decorative concrete, and what are the benefits?
Decorative concrete is a type of concrete enhanced through various techniques to provide aesthetic appeal along with traditional functionality. Some of its benefits include:
Aesthetic versatility — Decorative concrete can mimic other materials like brick, natural stone or even wood, providing countless design options.
Durability — Like standard concrete, decorative variants are incredibly durable and suitable for high-traffic areas.
Low maintenance — Unlike natural wood or stone, decorative concrete requires minimal upkeep.
Cost-effectiveness — It is often more affordable than other paving or flooring options, especially for larger areas.
Customisation — Decorative concrete can be tailored to fit specific design needs and personal preferences.
How much does decorative concrete cost?
The cost of decorative concrete depends on several factors, such as the complexity of the design, the types and quality of materials used and the scale of the project. Basic staining or simple stamping patterns are generally more affordable, while intricate designs and advanced textural effects may cost more.
For specific pricing aligned with your project’s specifications, request a quote from us directly.
How long does decorative concrete last, and how do I maintain it?
Typically, our decorative concrete solutions can last anywhere from 25 to 30 years or more. To ensure the longevity of your decorative concrete, make sure to do the following:
Regular cleaning — Sweep and wash the surface regularly to prevent dirt accumulation.
Apply a sealer — To protect the surface against moisture, stains and wear, apply a sealer every few years. This is especially important for exterior concrete.
Avoid harsh chemicals — Use gentle cleaning products specifically designed for use on decorative concrete to avoid damaging the surface.
Can you do an estimate for pods, spacers and concrete volume?
Yes, Allied Concrete can supply you with an estimate of the number of pods, spacers and the volume of concrete required. All we need is an email copy of your floor plan. There is no charge for this.
Where is the QPOD system available?
SuperSlab+ is available throughout New Zealand. Please contact your local Allied Concrete plant to find out more; 0800 4 ALLIED.
Can the pods be recycled?
Yes, QPODs are made from recycled material and 100% recyclable.
Does it have an improved R-Value?
The R value is a function of the slab geometry. SuperSlab+ floors provide improved R value and thermal mass both of which contribute to a warmer floor. To further improve the R-value, SuperSlab+ can be used in conjunction with QuickSet or QuickEdge perimeter insulation. Refer to the Allied SuperSlab Technical Manual for further information.
Can a decorative concrete finish be achieved with SuperSlab+?
Yes, both specific mixes can be either polished or incorporate colour to provide the desired look for your space.
Are the pods easy to transport?
Yes, the pods can be stacked for delivery and storage. A 180sqm floor able to be transported on a single axle trailer or the back of a Ute.
Can SuperSlab+ be used on a sloping site?
Yes, however this will require a specific engineered design.
Does SuperSlab+ use more concrete?
The SuperSlab+ system uses slightly more concrete than the current SuperSlab system.
Is SuperSlab+ Faster to Install than a Standard SuperSlab?
Yes, the unique interlocking pods and spacers make installation faster than using polystyrene pods.
Can I use standard concrete, or does it require a special mix?
When building on good ground SuperSlab+ requires two specific mixes: 202CSS (20MPa mix), 252CSS (25MPa mix), available in both 13mm and 19mm aggregates, both suitable for a 100mm line pump.
Refer to the SuperSlab Technical Manual, available in the Document library.
Is the system BRANZ Appraised and CodeMark Certified?
Yes, SuperSlab and SuperSlab+ is the only sustainable CodeMark Certified raft foundation system in the market.
How does SuperSlab+ compare in cost to using the current SuperSlab system?
When building on good ground SuperSlab+ may be slightly more expensive than using traditional polystyrene pods, however costs can be offset with the reduction in environmental footprint, transportation and storage costs combined with speed of installation.
Can I switch out my existing SuperSlab floor to using SuperSlab+?
Yes, QPOD is a direct replacement for 1100mm x 1100mm x 220mm traditional polystyrene pods and can easily be substituted without the need for an engineered design when building on good ground as per NZS3604.
Refer to the SuperSlab Technical Manual available at in the Document Library.
What is SuperSlab+?
SuperSlab+ is an evolution of the raft foundation system using eco-friendly recycled pods in place of traditional polystyrene, available exclusively from Allied Concrete.