Sealing Indian Sandstone
Indian sandstone is a beautiful paving material that is commonly used around the world. However like most sedimentary stones it can be prone to staining and damage from everyday use. Fortunately, there are a number of products on the market that can help protect and maintain your Indian sandstone surfaces. These can be used to stop weeds growing through or creating an uneven surface; or can help protect against the formation of black spot and algae. If you are worried about the longevity of your sandstone or simply want to keep it looking its best, then sealing is definitely worth considering.
The key thing to remember is that not all sealants are created equal, and there are a number of different types available for you to choose from. For example, there are stone impregnating sealants that work to change the colour of your sandstone whilst still leaving it breathable. This will enhance the natural colours within your sandstone and help prevent it from draining colour over time. There are also a number of surface sealants that will create a coating over the top of your sandstone and protect it from anything penetrating. These are typically more suitable for preventing things like black spot and algae growth, but they do not offer the same colour enhancement as an impregnating product.
We would recommend using an impregnating sandstone sealant such as Resiblock Indian Sandstone Sealer & Colour Intensifier brought to you by Nassboards. This is a popular choice amongst our customers as it is both water-based and eco friendly, meaning it is both VOC free and low in odour. It also doesn’t trap moisture, and is able to be used on both older and newly laid sandstone patios and paths. It is also easy to apply and dries quickly, and you can re-apply it without stripping.
Whilst this is a great solution, it is important to note that not all sealants will be able to protect your sandstone against all types of damage and staining. For this reason, we would advise that you also consider investing in a quality cleaner for your sandstone such as Aqua Mix(r) Poultice Stain Remover. This can be used to treat existing stains and help reduce the likelihood of them returning, or even for cleaning any dirt that has already made its way into the pores of your sandstone.
When it comes to sealing your sandstone, we would advise that you try to get this done as soon as possible once the surface has been cured – and certainly within the first year of its laying. This will provide the most effective protection against staining and weathering, as well as helping to ensure that any organic growth such as black spot or algae is prevented. Remember to carry out a small test patch before you apply the final coat of your sandstone sealant, and to make sure that the stone is dry and cool when applying.