How to joint paving is a common question asked by many home owners. They may have laid some new paving and wonder how to fill in the gaps. Or alternatively you may have some existing paving and think it’s time that they where re-pointed or jointed.
With existing paving it’s essential that you rake out all the old jointing material and brush away any loose debris before you start to think about re-jointing the paving. Raking out be done enough to provide you with a depth of at least 10mm along each of the gaps. For new paving slabs you should already have gaps that are 10mm deep without raking out.
Make sure you sweep all the debris away irrespective of which method you use.
The traditional method used for paving joints is a dry mix of of sand and cement mixed, 3 parts sand to 1 part cement. The method is only to be used on a dry day and the paving slabs are bone dry. If any moisture is left on the paving stones you are sure to get cement stains on your paving.
Next tip the dry mix out on to your paving and sweep it into the gaps with a soft brush. Once you have filled a small area with the dry mix, you need to use a pointing par or the blade of a trowel to push the sand and cement mix into the joint properly, this stops you having air pockets. As you push the sand and cement mix in fill any low areas with additional sand and cement. Carry on this sequence of brush in, push in, fill in until all your patio has been jointed.
- Dry jointing has a number of draw backs though.
- It rarely creates a sound joint with riven paving flags
- It can easily cause staining
- Weeds can easily take hold
- Dry mix jointing more often than not will crack quite quickly.
So for a lot of effort you gain average results, need to apply it in really dry conditions and if you are lucky it may stand a frost or two.
How to joint paving the easier way – our answer is of course Resiply.