Paving Already Laid but Not Jointed

This is for pedestrian paving projects where the paving has already been laid. The guidance given is for both new projects and for the rejuvenation of old installations.

Are your site conditions suitable ?

Ensure your site conditions are suitable for the use of EasyJoint - Click here for details

Joint dimensions

To achieve the best results, the joint dimensions should meet the standard specifications detailed in our before you start guide - Click here for details.

Because you are working on pre-laid paving, it may be that your joint dimensions are not quite to the ideal as specified. There is a small degree of flexibility but it should be recognised that any reduction on these dimensions will compromise the strength of the joint. Anything less than the dimensions specified below will cause the joint to become unstable and not "fit for purpose".

The more critical of the two dimensions is the joint width. If the paving is not laid to allow a minimum of 3mm width throughout the depth of the paving material, or this cannot be achieved by mechanically widening the gap, then EASYJoint is not suitable for use.

If the joint depth is less than prescribed for your base construction, then any reduction in the depth will have an impact on the strength of the joint. On an unbound base, a minimum depth of 30mm is required to ensure the integrity of the joint. On a bound base, an absolute minimum is 25mm is required. If these depths are not present or cannot be mechanically created, do not use EASYJoint.

Renewing old joints

EASYJoint does not form a structural part of the paving project.

EASYJoint is a joint filler and should not be relied on to secure loose paving. Therefore, ensure that all the paving is securely attached to the base material. If necessary, re-bed loose paving.

Are you working with a permeable or impermeable base?

EASYJoint can be used on both permeable and impermeable bases. If you are aware of the construction specification of the base and sub base, you can select the most appropriate method in the section below.

If you are not aware of the construction specification of the base and sub base, you are advised to precede with caution and assume that the base is impermeable and follow the directions below.


Permeable Base

Paving Type

Concrete

Straight vertical edged contrete paving

There are no additional precautions to take when using EASYJoint with this type of paving subject to the joint dimensions detailed above.

Continue to the Applying EASYJoint section below.

Concrete paving with a chamfered edge

Sometimes, concrete paving is made in moulds & has chamfered edges. In such cases, when two paving slabs are laid side by side a “V” shaped gap is formed, wider at the top than at the bottom. This gap shape can be the most challenging to work with. An irregular "V" shaped joint means that any type of filler, EASYJoint included, will have difficulty in staying in place.

Concrete paving with a chamfered edge
  1. Ensure at least a 3mm gap width throughout the depth of the paving material is maintained and the paving is not butted together. See photograph adjacent. If the paving is touching, it may be possible to mechanically increase the gap size at the bottom with the careful and cautious use of an appropriate grinding tool.
  2. Improve the adhesion of EASYJoint to the paving material and base by "pointing" or "striking" the joint; do not leave it textured. This assists to compress the filler & help it adhere to the base & the sides of the paving material.
  3. Do not overfill the Joint As with all types of paving, never overfill the joint. This is particularly important if the paving has a “rounded” top edge. The filler should be kept below the start of the "rounding". See diagram below.

Concrete paving with a chamfered edge

Natural Stone

Sensitivity to marking

Even with liberal amounts of water, some types of natural stone, e.g. Granite, Black Limestone and Modak, can be very sensitive and susceptible to marking; from the natural environment, from mortar used for the base or joints or from specialist joint fillers.

To greatly diminish the possibility of marking these types of stone we strongly recommend sealing the paving with a breathable sealant, if possible before installation but certainly prior to jointing. A breathable stone sealer will provide protection both during the jointing process and afterwards. It will also allow any efflorescence (white deposits caused by natural salts) present in the base and substrate to pass up through the paving material and over time, dissipate harmlessly into the atmosphere. This is a problem that is particularly prevalent in Black Limestone and will regularly appear after installation. It is not caused by the use of EASYJoint.

Our own water-based sealants - EASYSeal SSP and EASYSeal Ultimate - are ideal for this purpose. If in doubt please contact us at info@easyjoint.eu or call us on 01473 760777.


Applying EASYJoint

Weather Conditions

When working on a permeable base, EASYJoint can be applied in virtually all weather conditions except when temperatures are freezing or are 3 degress celcious and falling. For more information on application in inclement weather, refer to the before you start section.

Application Method

The preferred, fastest and safest method of installing EASYJoint is to use the Wet Application Method.

As a final check before proceeding to install EASYJoint and to ensure this is the correct method for your project, check it meets the following criteria

  1. Have the conditions at the beginning of this page been met ?
  2. The base is permeable
  3. When working with Natural Stone paving ensure it does not require sealing prior to installation – See Nature Stone above

If all these conditions are met, install EASYJoint using the Wet Application Method.


Impermeable Base

Paving Type

Concrete

Straight vertical edged contrete paving

There are no additional precautions to take when using EASYJoint with this type of paving subject to the joint dimensions detailed above.

Continue to the Applying EASYJoint section below.

Concrete paving with a chamfered edge

Sometimes, concrete paving is made in moulds & has chamfered edges. In such cases, when two paving slabs are laid side by side a “V” shaped gap is formed, wider at the top than at the bottom. This gap shape can be the most challenging to work with. An irregular "V" shaped joint means that any type of filler, EASYJoint included, will have difficulty in staying in place.

Concrete paving with a chamfered edge
  1. Ensure at least a 3mm gap width throughout the depth of the paving material is maintained and the paving is not butted together. See photograph adjacent. If the paving is touching, it may be possible to mechanically increase the gap size at the bottom with the careful and cautious use of an appropriate grinding tool.
  2. Improve the adhesion of EASYJoint to the paving material and base by "pointing" or "striking" the joint; do not leave it textured. This assists to compress the filler & help it adhere to the base & the sides of the paving material.
  3. Do not overfill the Joint As with all types of paving, never overfill the joint. This is particularly important if the paving has a “rounded” top edge. The filler should be kept below the start of the "rounding". See diagram below.

Concrete paving with a chamfered edge

Natural Stone

Sensitivity to marking

Even with liberal amounts of water, some types of natural stone, e.g. Granite, Black Limestone and Modak, can be very sensitive and susceptible to marking; from the natural environment, from mortar used for the base or joints or from specialist joint fillers.

To greatly diminish the possibility of marking these types of stone we strongly recommend sealing the paving with a breathable sealant, if possible before installation but certainly prior to jointing. A breathable stone sealer will provide protection both during the jointing process and afterwards. It will also allow any efflorescence (white deposits caused by natural salts) present in the base and substrate to pass up through the paving material and over time, dissipate harmlessly into the atmosphere. This is a problem that is particularly prevalent in Black Limestone and will regularly appear after installation. It is not caused by the use of EASYJoint.

Our own water-based sealants - EASYSeal SSP and EASYSeal Ultimate - are ideal for this purpose. If in doubt please contact us at info@easyjoint.eu or call us on 01473 760777.


Applying EASYJoint

Weather Conditions

If you were working with a permeable base, the description of EASYJoint being an "All Weather" product is true. However, because you are working on an impermeable base, which will restrict the draining of water, some weather precautions do apply.

You are strongly advised to wait for a dry spell when moderate to heavy rain is not forecast for at least 18 hours (moderate to warm temperatures) or 36 hours (colder conditions) after the application. This is to give the best chance of the water that was used in the application process being able to drain and evaporate from the joint and for the curing process to commence. If further water is added from rainfall during the curing process, there is a risk that the surface of the joint will cure through evaporation but the bottom of the joint will not, leaving a weak result.

When temperatures are freezing or are 3 degress celcious and falling, refer to the before you start section.

Application Method

When working with an impermeable base, the operator has a choice of application methods (wet application method or dry application method) and needs to select the most appropriate for the job. Whichever method is selected, wait for a dry spell of at least 24-48 hours as appropriate (See specific application method below).

The paving must be protected from the oil inherent in the EASYJoint and the most common method of doing this is with water using the wet application method. However, EASYJoint requires oxygen to cure – Whilst it is wet, it will not set!

Because you are working with an impermeable base, there is a risk that any water used in the application process will evaporate from the surface of the joint allowing the top part to set hard whilst the lower part remains wet (because the water will be slow to drain). The problem is compounded if during the curing process it rains. Because the lower part of the joint is subject to a prolonged wet period with a seal being formed at the top of the joint, the curing process can not complete as the water at the bottom of the joint will not be able to escape/evaporate . This will cause the "binding" properties of the compound to become compromised.

When to use the wet application method

It is safe to use the wet application method if the following conditions are met:

  1. The site conditions are suitable – Refer to the before you start guide.
  2. Daytime temperatures are moderate to warm (10 degrees celcious or above)
  3. Rain is not forecast for 48 hours.

These conditions will allow the water used in the application to evaporate out of the joint, allowing the compound to cure before again becoming wet from rainfall.

When to use the dry application method

The dry application method would perhaps be better referred to as the "almost dry application method" because a small amount of water is still used to assist the compound being swept and falling to the bottom of the joints.

It would be appropriate to use the dry application method in the following circumstances:

  1. The site conditions are suitable – Refer to the before you start guide.
  2. Daytime temperatures are cool (even cold) and overnight temperatures may drop to 3 degrees celcious or less
  3. There is a possibility of rain within 24-48 hours of application.