ULTRA
Resin Bound Knowledge Base
Resin Bound Knowledge Base
Specification - Introduction
In order to confirm the suitability of a resin bound surface, provide a detailed specification and an accurate quote, an initial site survey should be completed. There are several key areas which must be taken into consideration in the site survey:
● Examine the current surface of the site
In order to achieve the maximum performance standards a resin bound surface should be applied as part of a larger groundwork’s installation. A full install will typically require the base course to be removed and replaced with open graded tarmacadam or porous concrete. A resin bound surface that could receive any vehicular traffic should only be applied to a solid base.
* Base may be suitable for tree-pits or non-trafficked installations
If the current base is undamaged concrete or tarmacadam/bitmac, this may be suitable as the base layer for a resin overlay however a loose surface (such as gravel) or jointed surface such as block paving or flags are not suitable and would need to be replaced.
● Damage to the surface
If the existing surface shows signs of damage from reflective cracking or lifting then this should be replaced or repaired prior to the application of a resin bound surface. Damage is often a result of the sub-base layer not being fully compacted, collapsed drains, heaving by tree-roots or impact damage. Whilst impact damage can easily be repaired, sinking or heaving of the surface suggests that it should be replaced.
● Expansion or structural joints
On a full install, expansion joints are not typically required for a tarmacadam base course, a small domestic driveway or a pathway. We do advise that expansion profiles are used for day joints and any installations onto a concrete base. If the existing surface is to be overlaid then any movement or expansion joints in the base must have matching joints applied to the resin bound surface.