FAQs
Frequently Asked Questions
Straight answers to the questions we're asked most often about concrete driveways, finishes and our installation process across Tauranga and the wider Bay of Plenty.
How Long Does Concrete Take to Cure?
Concrete typically reaches enough strength to walk on within 24 to 48 hours and can usually handle light vehicle traffic after about seven days, but full curing takes around 28 days. During this period the concrete continues gaining strength as it dries out slowly and evenly. Warmer, drier weather speeds up curing, while cooler or wet conditions slow it down, which is why we monitor weather closely before recommending when your new driveway or slab is ready for full use.
Does New Concrete Crack?
Yes, all concrete has the potential to develop some hairline cracking as it cures and shrinks, which is a normal part of the drying process rather than a sign of poor workmanship. The goal of good installation is to control where cracking happens, not eliminate it entirely. Correctly placed control joints give the concrete a planned place to crack, keeping any shrinkage cracks straight, hidden and cosmetic rather than random and unsightly across the surface.
Can You Pour Concrete Over Existing Concrete?
In some cases, yes, provided the existing slab is structurally sound, properly cleaned and free of significant cracking or movement. This is typically done using a bonding agent or overlay system to help the new layer adhere. However, if the existing concrete is cracked, sinking or poorly drained, pouring over it will only mask the problem temporarily. We always assess the base first before recommending an overlay instead of full replacement.
How Much Weight Can a Residential Driveway Hold?
A standard residential concrete driveway, poured at the typical thickness with correct reinforcement, is designed to handle everyday vehicles such as cars, utes and light trailers without issue. If you're regularly parking heavier vehicles like motorhomes, boats on trailers or trucks, we recommend a thicker slab with additional reinforcement from the outset. Telling us about expected loads before the pour ensures the driveway is engineered to handle it long-term.
What's the Best Time of Year to Pour Concrete?
In Tauranga, concrete can be poured year-round, but the more settled, mild conditions of late spring, summer and early autumn generally give the most predictable results and curing times. Pouring during heavy winter rain or very hot, dry summer days requires extra care with timing, protection and curing methods. We monitor forecasts closely and adjust our approach for temperature and moisture so quality isn't affected by the season.
Can Tree Roots Damage Concrete?
Yes, tree roots are one of the most common causes of cracked, lifted or uneven concrete, particularly with fast-growing or shallow-rooted species planted too close to a driveway or path. As roots grow beneath a slab they can push it upward or create voids that lead to sinking. If you have established trees near a planned pour, we assess root proximity and may recommend a root barrier or adjusted slab positioning to reduce future damage.
Is Reinforcement Always Required?
Not every concrete pour needs the same level of reinforcement, but most driveways, paths and structural slabs benefit from steel mesh or rebar to control cracking and add strength. The right amount depends on the slab's size, expected load, soil conditions and thickness. Lightly used decorative paths may need less reinforcement than a driveway carrying vehicles daily, which is why we assess each project individually rather than using a one-size-fits-all approach.
What Is Concrete Slump?
Slump is a measure of how workable or fluid a concrete mix is before it sets, tested by filling a cone-shaped mould with wet concrete and measuring how much it settles once the mould is removed. A higher slump means a wetter, more flowable mix, while a lower slump means a stiffer mix. Choosing the right slump for the job affects finishing, strength and how well the concrete performs once cured.
Can Concrete Be Repaired?
In most cases, yes. Cracks, chips, spalling and minor sinking can usually be repaired through routing and sealing, patching, resurfacing or levelling, depending on the type and extent of the damage. Repair is generally far more cost-effective than full replacement, provided the underlying slab is still structurally sound. We assess the cause of the damage first, since fixing the surface without addressing the underlying issue often means the same problem returns.
How Often Should Concrete Be Cleaned?
For most driveways and paths, a wash down every three to six months helps prevent the build-up of dirt, moss, algae and staining, particularly in shaded or damp areas common around Tauranga properties. Sealed concrete is easier to keep clean and typically needs less frequent attention. Regular cleaning not only keeps your concrete looking its best but also helps you spot early signs of cracking or wear before they become bigger problems.
Is exposed aggregate worth the extra cost?
For many homeowners, yes. Exposed aggregate costs more than plain concrete because of the extra finishing work involved, but it offers a genuinely non-slip, decorative surface that holds up well to Tauranga's wet winters and adds noticeable kerb appeal. It also tends to hide minor surface marks better than a plain broomed finish. If appearance and long-term slip resistance matter to you, the additional upfront cost is generally a worthwhile investment.
Will my concrete driveway add value to my home?
A well-installed concrete driveway can genuinely improve a property's kerb appeal and perceived value, particularly when it replaces a cracked, ageing or gravel surface. Buyers and valuers often view a solid, well-finished driveway as a sign the property has been properly maintained. While it's difficult to put an exact dollar figure on the uplift, a clean, durable driveway is consistently one of the more noticeable first impressions a property makes.
What concrete finish requires the least maintenance?
A plain broomed or power-floated finish generally requires the least ongoing maintenance, since it has fewer decorative details to clean around and no complex texture to trap dirt. Sealing any finish reduces maintenance further by protecting against stains and moisture. Decorative finishes like stamped or exposed aggregate concrete look fantastic but do involve slightly more upkeep, mainly periodic resealing, to keep their colour and texture looking their best over time.
Which driveway lasts longer in Tauranga's climate?
Concrete driveways generally outlast asphalt in Tauranga's climate, particularly through summer, since concrete doesn't soften or rut under sustained heat the way asphalt can. Concrete also tends to handle the region's wet winters well when properly reinforced and drained. Asphalt has its own advantages, such as lower upfront cost and flexibility, but for long-term durability with minimal movement, a correctly installed concrete driveway is typically the longer-lasting option.
Why do some driveways crack within two years while others last decades?
The difference almost always comes down to what happens before the pour. Poor subgrade compaction, inadequate reinforcement, missing or incorrectly spaced control joints, and rushing the finishing process are the most common causes of early failure. A driveway that lasts decades starts with proper excavation, a compacted base, the right mix design and correct curing. Cutting corners on preparation is the single biggest factor separating a short-lived driveway from a long-lasting one.
Is concrete slippery when wet?
Plain, smooth-troweled concrete can become slippery when wet, particularly in shaded areas that stay damp longer. Textured finishes such as broomed, exposed aggregate or stamped concrete with a slip-rated sealer provide significantly better grip underfoot. If safety is a priority, particularly around entrances, steps or pool areas, we recommend a textured finish and an appropriate sealer rather than a smooth, glossy surface that looks good but performs poorly when wet.
What's the biggest mistake homeowners make before pouring concrete?
The most common mistake is underestimating the importance of site preparation and drainage planning before the pour even begins. Skipping proper excavation, compaction or slope planning to save time or money almost always leads to problems later, from pooling water to premature cracking. Choosing a contractor based purely on the lowest quote, without checking their preparation process, is a close second — the finished surface is only ever as good as what is underneath it.
How do I know if I need a new driveway or just repairs?
If the damage is limited to isolated cracks, minor sinking or surface wear, repair is usually the right call and far more cost-effective. Signs that point toward replacement include widespread cracking across multiple sections, significant unevenness, a failing base, or a driveway that's been patched repeatedly without lasting results. A site assessment is the best way to know for certain — we'll always recommend repair first if it will genuinely solve the problem.
What Happens During a Concrete Driveway Installation?
A typical installation begins with excavation and site preparation, followed by compacting a stable base layer, installing formwork and steel reinforcement, then pouring and screeding the concrete to the correct level. Control joints are cut, and the surface is finished to your chosen texture before curing begins. Throughout the process we manage drainage, weather timing and quality checks at each stage, so the finished driveway performs well for decades rather than just looking good on day one.
How We Prepare the Ground Before Pouring Concrete
Ground preparation starts with excavating to the correct depth and removing any unsuitable soil, followed by laying and compacting a base course of crushed rock in even layers. We check levels and falls throughout to make sure water will drain away from your home rather than pooling on the surface. This stage takes time, but it's the single most important part of the entire job, since a poorly prepared base undermines even the best concrete mix.
Why Proper Base Preparation Matters
The base beneath a slab supports its entire weight and determines how well it resists movement, cracking and settling over time. A compacted, well-drained base spreads loads evenly and prevents the voids and soft spots that lead to sinking or cracking years down the track. Skipping or rushing this stage is one of the most common causes of driveway failure we're called out to repair, which is why we never shortcut it, even under time pressure.
Common Mistakes We See When Replacing Old Driveways
The most frequent mistakes include reusing a poor-quality base without re-compacting it, ignoring existing drainage problems instead of correcting them, and matching the new slab's level to an old, uneven driveway rather than resetting it properly. We also regularly see missing or poorly spaced control joints on older driveways, which is a leading cause of random cracking. Replacing a driveway is the ideal opportunity to fix these underlying issues properly, not just repeat them.
How We Ensure Concrete Lasts for Decades
Longevity comes down to getting the fundamentals right every time — thorough site preparation, correctly compacted base material, appropriate reinforcement for the load the slab will carry, quality concrete mix design, and patient, unrushed finishing and curing. We also factor in drainage and, where relevant, nearby trees or ground movement. None of these steps are especially glamorous, but together they're exactly why a properly installed concrete driveway can comfortably outlast several decades of daily use.
Our Concrete Installation Process Explained
Every project follows the same proven sequence: site assessment and planning, excavation and base preparation, formwork and reinforcement, the pour itself, finishing to your chosen texture, and a full curing period before the surface takes traffic. We communicate with you at each stage so you know what to expect and when. This consistent, methodical approach is what allows us to deliver reliable results across driveways, patios and commercial concrete work throughout Tauranga.
What Makes a Quality Concrete Contractor?
A quality contractor takes the time to properly assess your site, explains the process clearly, and never skips preparation steps to save time. Look for trade qualifications, proper insurance, a track record of completed local projects, and a willingness to put recommendations and pricing in writing. The best indicator isn't always the finished surface on day one — it's how that driveway or slab is still performing five or ten years later.
Why Cheap Concrete Quotes Can Cost More Later
The cheapest quote often achieves its price by cutting back on base preparation, reinforcement, concrete thickness or curing time — all things you can't see once the job is finished, but which determine how long it lasts. A driveway that fails within a few years and needs repair or replacement ends up costing significantly more than paying a fair price for proper workmanship the first time. A detailed, itemised quote is usually a better guide than the lowest number.
Tauranga Concrete
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