The Top 3 Most Asked Questions From Homeowners On Resin Driveways
If I lay resin over the gravel on my drive, will it glue together to form a resin driveway?”
Resin driveways are not created by this method. Whilst ‘yes’ it may ‘glue’ the aggregates on your driveway together for a short period of time, it really is not a good idea to lay resin over the gravel on your drive and we do not recommend it whatsoever. This is because it will not create the fundamentals of what resin driveways are. Resin cannot be mixed with any old type of gravel. Resin has to be mixed with bone dry, kiln dried aggregates. If there is any moisture present at all, a chemical reaction occurs between the hydrogen in the water and the hydrogen in the isocyanate, (in the resin). A white foam, that is carbon dioxide, is produced as a consequence of the reaction. This leaves the driveway looking white, patchy, bubbly and essentially a mess.
In addition to having a driveway that would even deter the neighbours cat from walking on it, you can guarantee your ‘resin driveway’ won’t last very long either. This is because the current gravel on your drive may have moisture and other rogue particles attached to it, therefore there is limited room for the full surface of the gravel to be covered in resin. For the resin to bind correctly, the whole surface of the aggregate must be covered in the resin. If only parts of the surface can be covered in resin, only those parts of the stone will bond together. This means weaker bonds that are more likely to break; resulting in a cracked and loose driveway.
Resin and kiln dried aggregates must be mixed thoroughly together in a forced action mixer. View more on forced action mixers here.
Can I lay resin over my old concrete drive?”
This completely depends on the current state of the drive. How old is old? Your driveway could well be 10 years old but be suitable for resin to be laid straight over it. On the contrary, your driveway could only be 2 years old but not suitable for resin bound gravel. It all depends on if it is a smooth surface with no cracks, with no loose gravel and no movement.
If there is movement in the sub-base, (the concrete), it will cause the resin to crack and therefore spoil its performance and kerb appeal. This is called reflective cracking. A Resin Mill Approved Contractor will be able to advise if the current state of your driveway is suitable for resin bound paving or if a full driveway excavation is required.
A solid sub-base must be constructed as a foundation for the resin bound gravel in order to endure deflection without cracking. Think of it in the sense that you wouldn’t build a house on top of a surface where load bearing properties are critical and a solid foundation is a prerequisite. Attention should be made to where there are any expansion joints in the concrete and resin bound expansion joints should be installed accordingly.
Tarmac can also be used as as a sub-base for resin driveways but block paving cannot, as agreed by Drivewaywise.
What is the difference between resin BONDED and bound resin driveways?”
The words ‘bound’ and ‘bonded’ look and sound phonetically similar. They are however very different as the terms ‘resin bonded driveways’ or ‘resin bonded drives’ should not even exist. It should only be ‘resin bound driveways’ or ‘resin drives’. Here they are explained:
A resin bonded surface is essentially a ‘coat and scatter’ method where a thin layer of resin, (glue), is laid across a surface and then aggregates are scattered across the top of it, mimicking loose gravel.
The application of resin bonded should only be for light foot traffic and not for driveways. This is because the aggregates are only partially coated in resin, where they are stuck to the ground.
If cars were to drive and park on resin bonded surfaces, grooves would form and distort the surface. Repetitive use of tyres on resin bonded surfaces, loosen the aggregates, removing them from the glue, leading to possible vehicle damage as they are moved and lifted as tyres move around.
A resin bound surface is where mixes of highly attractive decorative aggregates are mixed and fully coated in resin. They are then hand trowel applied to either a concrete or tarmac solid surface. Once the resin bound mixture has cured, it creates an incredibly attractive smooth layer. It is an anti-skid, hard wearing, low maintenance and permeable surface.
Resin bound ensures there is no loose gravel and a highly cosmetic seamless surface is created. The resin bound aggregates form a matrix like structure, mimicking natural water drainage and allowing the water to flow through it. This eliminates puddles on the surface of your resin drive and therefore aids with flood prevention. The structure also ensures those annoying little weeds don’t grow through, completely reducing any maintenance. All off the gravel is fully coated in specially formulated, strong resin. The chemical bonds in the ‘resin bound’ mixture are strong yet flexible, allowing for movement, such as vehicle wheels. This means if installed correctly, resin driveways will not crack and last for years to come. Resin Mill Resin Driveways are coated in an extra anti-slip material. This means you can have a seamless surface, without the worry of any skidding.
Note: Ensure your contractor can provide slip-test results for the materials for your resin bound driveway.