Analysis of Artificial Playground Surfacing

St Pauls School New Playground Surface Project
St Pauls School New Playground Surface Project

Analysis of Artificial Playground Surfacing

When choosing playground surfacing, it’s sometimes tempting to go with the apparent ‘simple solution that requires no maintenance’.  However, what if you were told that ‘solution’ potentially creates the need for increased maintenance, involves more capital outlay and can deteriorate into a safety hazard? We’ll get into the details later, but before we do let’s take an initial look at four different playground surfacing choices.

 

Rubber Tiles

What to watch for: cracking, slipperiness when wet or icy in winter, requires professional installation, limited lifespan- requires costly disposal after five years and on-going cost of tile replacement

Positives: easy to clean, choose from a range of colours

 

Playground Bark

What to watch for: non-compliant and non-certified bark – not all barks are the same, look for one that meets the standard: NZS5828:2015

Positives: low capital cost, low or no-cost installation (e.g. spread during a school working bee), cost-effective, sustainable, resourceful, can be re-used in gardens.

 

Playground Woodchip

What to watch for: paint and other contaminants from wood, non-compliant products (don’t meet NZ standard), nails from wood products

Positives: Low capital cost, low or no-cost installation (e.g. spread during a school working bee), cost-effective, resourceful

 

Wetpour

What to watch for: high installation cost, surface requires major preparation, surface flooding /run-off, temperature-sensitive

Positives: custom-colouring, easy to clean

 

All these options are commonly used in New Zealand schools. However, the negative aspects of some choices are noticed well after installation and often too late to remedy.

 

 

Let’s look at some of the common issues with artificial surfacing…

 

Colour:

Considering a black surface to complement your landscaped areas? Think again. Although they are an aesthetic attraction, black surfaces act as heat magnets in summer – similar to asphalt or black piping. This leaves children with limited comfortable play space in the warmer months. It also creates maintenance issues with cracking, warping and gaps created between tiles due to shrinkage from fluctuating temperatures.

 

Health and Safety:

Over time, ambient temperature fluctuations put considerable stress on the plastics in artificial surfacing changing their structure. Cracking, warping or shrinkage can be the result of just 2-3 years of New Zealand’s intense sunlight. This can mean artificial surfaces deteriorate  to the extent that they no longer meet the NZ safety standard certification which can, in turn, place children in jeopardy.

 

Maintenance:

Often, artificial surfacing is chosen by schools at the design stage because of a perception that on-going maintenance will be limited. When tiles move or the poured surface tears, artificial surfacing can be extremely costly to repair. Often a certified installer needs to carry out remedial work to ensure the surfacing continues to comply with certification and doesn’t void future warranty.

 

Discussions with school caretakers around the South Island indicate that most prefer bark as a playground surface because of its ease of maintenance. A quick rake once every couple of months and annual top-ups undertaken during working bees provides for flexible and low-cost maintenance.

 

Capital Outlay:

A large outlay of funds can impact negatively on a school’s balance sheet. We ran the numbers for an artificial surface earlier in the year, and the results can be found in our Bounce®Bark brochure. What it shows is that when the installation cost of an artificial surface is divided by its lifespan, its annual cost is extremely expensive compared to options like Bounce® Bark. This doesn’t include the recurrent cost of reinstallation when the surfacing requires replacement.

 

Weather:

New Zealand can experience a range of extreme climates, from the super cold South to the hot North. Artificial surfaces are susceptible to freezing over in frosts which creates a safety hazard for children. Unlike bark products with their loose form, which displace in cold temperatures, artificial surfacing freezes hard into an icy layer, providing no impact-protection.

 

A natural product such as Bounce® Bark is unaffected by fluctuations in temperature. Bark can still act as practical impact protection from -5 °C right up to the mid-40s. Whilst it’s unlikely the playground will be in use in such weather extremes, should it be – it will remain a safe space to play, giving peace of mind to parents, principals and school board members.

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Full truck load volumes
  • Bark: 7m³
  • Compost: 4m³
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Full truck load + trailer volumes
  • Bark: 25m³ - 65m³
  • Compost: 17m³ - 38m³
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  • Shell: 12m³ - 30m³

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We welcome pick-up of product by the public for volumes 1m³ and over. Please check your estimated trailer weight rating below. If your trailer is unable to hold the weight of our minimum pick-up volume, please book a delivery. *We require a minimum order quantity of 3m³ for any bark, compost, soil or shell products and a minimum order quantity of 1.5m3 for any stones or aggregates.

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Recommended depths

Typically you need a finishing layer of screened soil of 100mm when working with an uneven surface. 100mm of soil will allow to even out any hollows and give enough depth to create a flat surface

A general rule for compost is to allow for the depth of the current root structure of your plants with an additional 30-50% to mix in with the base. If you’re planting into holes or filling up a vege garden  you will need to accommodate for this prior to filling up

We recommend 100mm (10cm) deep for new bark gardens and planting into bare areas. For existing gardens with some cover, we recommend 75mm-100mm (7.5cm-10cm)

Note: Barked areas for playground impact protection need to meet NZS5828:2015 standards and is calculated on the fall areas and the height of the playground. Please contact us to discuss your barked playground areas

For paths and driveways which are often exposed to car and foot traffic, we recommend 100mm-125mm (10cm-12.5cm) on newly prepared areas due to settling of product.

This excludes preparation, compaction or drainage gravel underneath. For existing areas 75mm thickness is recommended for areas needing a small top-up.