The Risks of Leaving Stone Walls Unprotected
Stone walls may look solid but they are naturally very porous. Without proper waterproof protection, rainwater can soak into the stone, which can lead to costly damage over time. Fortunately, there are ways to protect stone walls without preventing them from breathing.
In this blog, we will cover:
- How moisture affects unprotected stone walls
- The impact moisture can have on your home
- The best ways to protect stone walls
How moisture affects unprotected stone walls
While stone walls are known for their strength and durability, they are naturally porous and can absorb significant amounts of water over time. Without protection, moisture can penetrate deep into the masonry, leading to a range of issues that can affect both the appearance and performance of your property.
Penetrating damp
One of the most common problems caused by moisture is penetrating damp. As rainwater is constantly being absorbed into the stone, it can gradually make its way through the wall and appear on internal surfaces. This can result in damp patches, peeling wallpaper and damaged plaster within the property.
Moss, algae and staining
Constantly damp walls create ideal conditions for moss, algae and other organic growth. Not only can this affect the appearance of the property but it can also increase maintenance requirements and contribute to long-term moisture retention on the wall surface.
Increased heat loss
When stone walls become saturated with water, they can lose heat more quickly, making rooms feel colder and potentially increasing energy consumption as heating systems work harder to maintain comfortable temperatures.
The impact moisture can have on your home
The effects of moisture extend far beyond damp walls. When water is allowed to repeatedly penetrate masonry, it can affect the appearance of your property, reduce its energy efficiency and contribute to the deterioration of the building.
Increased maintenance requirements
Excess moisture can significantly increase the amount of maintenance required to keep stone walls in good condition. Moss, algae and staining often need to be cleaned regularly, while prolonged exposure to water can cause mortar to deteriorate and the stone to become damaged. If left untreated, these issues can worsen over time, resulting in more extensive repairs and higher maintenance costs than many homeowners anticipate.
Trapped moisture within the wall
While protecting stone walls from water is important, using the wrong type of waterproofing product can sometimes create problems of its own. Many traditional sealers form a non-breathable barrier on the surface of the masonry, preventing moisture vapour from escaping naturally.
Could impact your home’s value
Visible signs of damp and water damage can make a property appear less well maintained and may put off potential buyers. If moisture problems are discovered, buyers may ask for repairs to be carried out before completing the purchase. Taking steps to protect your stone walls can help preserve both the condition and appeal of your home, while also saving a lot of time and money on future repairs.
The best ways to protect stone walls
Protecting your stone walls from water absorption and damage starts with choosing a waterproofing paint or coating that not only repels water but also allows the masonry to continue breathing after application. This is important because stone walls naturally absorb and release moisture and preventing this process can lead to trapped moisture and further damage over time. This is why Emperor Masonry Paint and Emperor Masonry Creme are designed to be both super hydrophobic and highly breathable.
Emperor Masonry Paint
If your stone walls are already painted or you are looking to transform their appearance, Emperor Masonry Paint provides both decorative and protective benefits. Unlike many traditional masonry paints, Emperor Masonry Paint is highly breathable whilst offering excellent super hydrophobic protection.
The paint helps prevent rainwater from penetrating the masonry, reducing the risk of damp and moisture-related damage. Its breathable formulation also allows water vapour to escape, helping to keep walls dry and protected over the long term.
Emperor Masonry Creme
For homeowners looking to maintain the natural appearance of their stone walls, Emperor Masonry Creme is an ideal solution. This is a clear, highly breathable masonry cream which allows surfaces to breathe while also keeping water out with Emperor’s super hydrophobic technology.
By significantly reducing water absorption, Emperor Masonry Creme helps protect stone walls, all while preserving the original appearance of the stone.
Frequently Asked Questions
What surfaces can Emperor Masonry Creme be applied to?
Emperor Masonry Creme can be applied to any natural mineral surface, including brick, stone, concrete and sandstone. These surfaces all allow the treatment to absorb into the wall, which is what is required in order to dry and cure.
How breathable is Emperor Masonry Paint and Masonry Creme?
Our independent scientific testing confirmed that Emperor Masonry Creme has an SD value of 0.01 and Emperor Masonry Paint has an SD value of 0.03. This shows that they have no negative effect on breathability and do not restrict the movement of water vapour.
Why do stone walls absorb water?
Stone is naturally porous, meaning it contains tiny holes that allow water to be absorbed into the masonry. Some types of stone are more absorbent than others, so keeping them protected is important.
How can I tell if my stone walls are absorbing too much water?
Common signs include dark patches after rainfall, algae or moss growth, damp internal walls, crumbling mortar joints and visible staining on the masonry.
If you have more questions, we are here to help with our in-house team of experts. You can chat to them by emailing [email protected] or give them a ring on 01254 936121.
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