What mix should I use for repointing?

A typical mortar mix for Repointing purposes, for use in an area subject to normal weather conditions, would comprise 1 part Portland Cement, 1 part Lime and 5½ parts Sand.

What is the correct mix for pointing brickwork?

Mortar Mix for Pointing The preferable mortar mix ratio for pointing is 1-part mortar and either 4 or 5 parts building sand. The ratio will vary depending on what exactly is being pointed. For bricklaying, you will usually want a 1:4 ratio with plasticiser added to the mixture.

Do you need plasticiser for pointing?

Plasticiser in pointing mortar Again plasticiser is not necessary to make the mortar for pointing a patio with a trowel. You can add if you have or skip it when making the mortar the poitining and you’re going the traditional way for pointing that’s with a trowel.

Do I need plasticiser in mortar?

Add plasticisers and other additives to the mortar mix to improve workability, but only if needed. Use only products specifically designed as a mortar additive. Use pre-mixed or factory-made mortar to ensure consistency throughout.

How do I make a dry mix for pointing?

Use a dry-ish building sand, plastering sand or, if so desired, a Kiln Dried Jointing sand. Some installers like to use a coarser or sharp sand, but this can result in a rough-looking finish when used for dry grouting. A 3:1 ratio of sand and cement are mixed without the addition of ANY water. None.

Can I use sharp sand for pointing bricks?

Sharp sand is nothing like building sand and is no good for laying bricks. As stated, it’s best on benching, chimney flaunching, roof verges and floor screeds.

Why do bricklayers use washing up liquid?

Washing-up liquid Washing up liquid is commonly used as a plasticiser in cement mortar. However, it is thought to affect the long-term structural integrity of the mortar as it can add too much air, thereby creating bubbles. The surfactants in washing up liquid may also produce foam if used in excess.

Is it OK to use washing up liquid in mortar?

Never use washing up liquid in your mortar mix. The only place for that is on the kitchen sink. Use mortar plasticisor.