Sealing of Indian Sandstone Paving
June 25, 2024 AdminSedimentary rocks such as sandstone are often used in the construction industry for both indoor and outdoor applications. However, since sandstone is considered porous, it tends to invite dirt, moisture, and other elements that can lead to stains and damage to surface if proper sealing is not done.
Sandstone paving should be sealed in a way to preserve its natural beauty and protect its surface.
In this post, we’ll cover all you need to know about sealing Indian sandstone paving.
Why sandstone needs to be sealed?
Sandstone is a porous stones which means it can easily absorb moisture, dirt, and other harmful agents, as was previously described. Surface degradation, discolouration, and staining may result from this. By forming a barrier that deters water, oil, and other things, sealing sandstone aids in the prevention of these problems. Additionally, it aids in shielding the surface from potentially damaging external elements like UV rays.
Types of Sandstone Sealing Agents
Sandstone paving can be sealed using two primary types of sealers: penetrating sealers and surface sealers.
Penetrating Sealers
These sealants are designed to penetrate the pores of the sandstone and provide long-lasting protection.
They’re made of tiny particles that stick to the surface of the stone to create a barrier that keeps liquids, oils, and other materials out. Penetrating sealers don’t change the appearance of the sandstone and are suitable for both interior and exterior surfaces.
Surface Sealers
These sealers are meant to add an extra layer of protection to the outside of the sandstone. They are made with a substance that forms a film and sticks to the stone, keeping liquids, oils, and other materials away.
Surface sealers can alter the look of sandstone, imparting a glossy or matte finish. They belong only on interior surfaces.
What is the right time to seal the sandstone?
Prior to applying sealer, make sure your sandstone paving is completely dry and clean. The weather, the kind of sandstone, and the stone’s location are a few factors that influence how long it takes for the sandstone to dry.
In general, it’s recommended to wait 24 to 48 hours after sandstone cleaning before applying a sealer. This allows the stone to dry completely and ensures that there is no moisture trapped in it.
If the sandstone is in a moist area or you live in a humid environment, it could take longer for it to dry. In these circumstances, waiting until the stone is completely dry before applying a sealer is recommended.
It is best to avoid sealing Indian sandstone paving too soon after washing it, since this might trap moisture inside the stone and lead to discoloration and other issues. As a result, it’s imperative to wait to seal the stone until it has completely dried before doing so.
How the sealing of sandstone is done?
Before sealing, sandstone surfaces need to be thoroughly cleaned. To eliminate any potential dirt, grime, or other materials, use a mild detergent and warm water. Rinse the area well with clean water and allow it to dry completely before applying the sealant.
Take these actions to apply the sealer:
- Shake well before using the sealer.
- Fill a paint tray or other appropriate container with the sealant.
- Apply a thin, even coat of sealer to the sandstone surface using a paintbrush or roller dipped in it.
- Follow the manufacturer’s instructions and let the sealer dry.
- If needed, apply a second coat.
- Let the sealant fully cure before use the surface.
How often does Indian sandstone need resealing?
The type of sealer used, the volume of foot traffic the surface receives, and the local climatic conditions all affect how frequently sandstone needs to be sealed. Sandstone should generally be sealed every two to three years for internal surfaces and every one to two years for external surfaces.
