Joining and Pointing

The mixture for jointing your slabs will depend to a certain extent on the type of paving that you use. If you use a `pressed' slab - these are normally cheaper and have very square edges, with both faces of the slab very similar in appearance - then a rather dry pointing mix is best. It is more difficult to remove cement mortar stains from this type of paving. For the moulded slabs - a smoother finish, bevelled edges with the reverse different to the face side - then a normal mortar mix will be in order. It is much easier to remove mortar stains from the surface of this type of slab.

The mixture should be of the ratio 1 part (by volume) cement to 3.5 - 4 parts building sand. Coarse sharp sand can also be used where preferable, and gives a more durable joint in areas of heavy wear.

The jointing/pointing of the paving is very important to the success and longevity of your work. It is not simply a cosmetic exercise. Make sure that the pointing mortar goes right down into the joints. It is far better to have a slightly messy slab, which can be easily cleaned, but with a total bond between joint and mortar base.

Use a complimentary or contrasting colour pigment in the mortar. Brown, black or buff are usually all right - not red. All coloured mixes tone down considerably upon drying. Experiment if unsure.

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