Pointing is an essential process in the construction industry that involves filling the gaps between bricks or stones with a suitable material. Lime mortar is a popular choice for pointing due to its durability, flexibility, and compatibility with historic buildings. However, choosing the right type of lime mortar for pointing can be a daunting task, especially for those who are not familiar with the different types available in the market. In this article, we will discuss the factors to consider when selecting the right lime mortar for pointing and provide a comprehensive guide to help you make an informed decision.
Factors to Consider:
- Type of Lime Mortar:
There are three main types of lime mortar: hydraulic lime, non-hydraulic lime, and hydrated lime. Hydraulic lime is suitable for areas exposed to high moisture levels, while non-hydraulic lime is ideal for areas with low moisture levels. Hydrated lime is a versatile option that can be used in both high and low moisture areas. - Colour:
The colour of the lime mortar is an important consideration, especially for historic buildings. Traditional lime mortars are available in a range of colours, including white, cream, and grey. It is essential to choose a colour that matches the existing mortar to maintain the building's aesthetic appeal. - Texture:
The texture of the lime mortar is another crucial factor to consider. The texture should match the existing mortar to ensure a seamless finish. The texture can be smooth, rough, or gritty, depending on the type of pointing required. - Strength:
The strength of the lime mortar is determined by the ratio of lime to sand. The strength required depends on the type of building and the location of the pointing. It is essential to choose a lime mortar with the appropriate strength to ensure the longevity of the pointing.
Conclusion:
Choosing the right lime mortar for pointing is a critical decision that requires careful consideration of various factors. The type of lime mortar, colour, texture, and strength are essential considerations when selecting the right lime mortar for pointing. By following the guidelines provided in this article, you can make an informed decision and ensure the longevity of your building's pointing.
