The Difference between Resin Bonded and Resin Bound Surfacing The terms "Resin Bonded" and "Resin Bound" often get interchanged and confused. Although they sound relatively similar, these two resin aggregate systems differ in application methods and properties. In this blog post, we will analyse the details of both Resin Bonded and Resin Bound Surfacing to help you avoid confusion.
What is Resin Bound Surfacing? Resin Bound Surfacing is fast growing in the UK. The system is created by mixing kilndried aggregates with a clear polyurethane resin before application to the base. Next, the mixture is spread over the foundation using a squeegee and then troweled out to a completely smooth finish.
Resin Bound Surfacing is typically applied from a minimum thickness of 12mm to 24mm, depending on their desired usage. It may be laid on a solid base of any preexisting porous tarmac or concrete surface. It is important to note that the surface should be at least 1inch thick before laying down the Resin so that it can adequately flex with any changes in temperature or weather.
With the appropriate depth and buildup, Resin Bound Surfacing is suitable for pedestrian and vehicle use on commercial and domestic applications such as car parks (excluding shopper's car parks), access roads, terraces, cycle paths, driveways, paths, patios, pool surroundings. The typical life span is up to 25 years, depending on the use. Resin Bound Surfacing key features:
Porous Water can soak through it, providing that the original surface material beneath the Resin Bound has been configured for SUDS (Sustainable Urban Drainage Systems) and is also porous.
Low maintenance Ideal and perfect for cleaning as the surface can withstand a pressure wash, with no loose stones. Regular sweeping with a stiff broom is recommended to remove leaves and detritus materials and prevent moss growth.
Smooth finish The seamless contemporary smooth finish looks beautiful in any surrounding and can be achieved in a wide range of colours and materials.
Hardwearing and frostresistant Resin Bound Surfaces have natural hardwearing and frostresistant properties thanks to the combination of polymers, polyesters, and asphalt materials.
Slip-resistant When sand or glass grit are included within the mix, Resin Bound Surfacing remains slipresistant in wet & dry conditions.
Durable Long lifespan up to 25 years depending on usage.
What is Resin Bonded Surfacing?
In a nutshell, systems where Resin is spread across the nonporous surface and loose, dry aggregate is scattered on top is called the Resin Bonded system. Once it is cured, the excess stones are removed, creating a more uneven and rough surface with the texture and appearance of loose gravel. Resin Bonded Surfacing is guided by aggregate size, which ranges from 1mm to 6mm, i.e. 13mm aggregate will have a nominal depth of 4mm. The thinner the stone layer, the rougher and more textured the outcome. Considering the characteristics and material of a Resin Bonded Surface, it is not recommended for children's play areas and pool surroundings as the rough finish could easily cause injury if fallen upon. Resin Bonded Surfacing is a good solution for redevelopment projects or giving commercial and domestic car parks and access roads, heritage projects, pathways, public squares, courtyards a facelift. The aggregate choice can be critical when the surface is intended for vehicle traffic. Aggregates with mineral hardness less than seven on the Mohs scale should not be used. How does Resin Bonded Surfacing differ from Resin Bound Surfacing?
Impermeable As the stones are not enclosed in Resin like in Resin Bound Surfaces, they can become scattered, making the area prone to water accumulation and are noncompliant with SUDS regulations.
Textured finish A Resin Bonded Driveway, Patio or Footpath will never be as smooth or glossy as its Resin Bound counterpart.
Slip-resistant Being a very high friction coefficient, Resin Bonded Surfaces serve well for areas that require much grip, as they allow an object to stop quickly as it moves along the ground.
Maintenance As the stone only adheres to the Resin on one side, it remains at risk of becoming loose and scattered. Sweeping is required to prevent any loose gravel from being kicked around. Furthermore, to stop any buildup of grime and dirt from accumulation, Resin Bonded Surfaces should be pressure washed a couple of times during a year.
Lifespan The typical life span of a Resin Bonded Surface in origin of 515 years and depends on aggregates selected for a project.
Similar in name, Resin Bonded and Resin Bounded Surfacing have different properties, application methods and aesthetics. Both systems are based on the idea of using Resin to fix gravel aggregates and create decorative surfacing that can serve well in a variety of applications. The critical difference between the two types is that Resin Bonded systems are more environmentally friendly. When laid on a porous base, they form a self draining, smooth surface, allowing the water to filter through the structure.
If you would like to discuss Resin Surface to suit your needs, please contact us. Here at Yew Tree Landscapes, we will be more than happy to help you with all your Resin Surfacing queries.