A building facade is one of the first things people notice about a property. It gives a home, office, shop or commercial building its character, but it is also one of the most exposed parts of the structure. Every day, exterior walls face rain, wind, frost, pollution, algae, moss, dirt and temperature changes. Without protection, moisture can penetrate brickwork, concrete, render, stone and porous masonry, leading to staining, damp problems and long term deterioration.
At Nanocoating.co.uk, we sell a complete cleaning and protection system for facades and exterior walls:
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NC Nano Stone Cleaner for cleaning facade materials before treatment
- NC Nano Coating for Stone, Concrete & Tile for creating a breathable, water repellent and dirt repellent surface
Together, these products help protect outside walls against penetrating damp, rainwater absorption, algae, mould, frost damage, pollution staining and premature ageing.
Quick overview and answer
Facade waterproofing means treating an exterior wall with a protective product that stops rainwater from soaking into the surface while still allowing the wall to breathe. The best approach is to clean the wall first with NC Nano Stone Cleaner, allow it to dry fully and then apply NC Nano Coating for Stone, Concrete & Tile.
- If you are asking What is facade waterproofing?, it is the process of making exterior wall materials water repellent so rain cannot easily enter the pores.
- If you are asking How to protect an outside wall from water?, use NC Nano Stone Cleaner for preparation and NC Nano Coating for Stone, Concrete & Tile as a breathable protective treatment.
- If you are asking Is waterproofing brickwork a good idea?, yes, provided the wall is clean, dry, sound and suitable for impregnation. It helps reduce rain penetration and keeps the wall drier.
- If you are asking What is the best waterproof coating for exterior walls?, a breathable nano impregnation such as NC Nano Coating for Stone, Concrete & Tile is a strong choice for many brick, concrete, stone and render surfaces.
- If you are asking Is nano coating the right product to waterproof a facade?, yes, for suitable porous exterior wall materials that need invisible, breathable and water repellent protection.
What is facade waterproofing?
Facade waterproofing is the process of protecting an exterior wall against rainwater absorption. In many cases, it is more accurate to call it water repellent facade protection, because the best treatments do not trap moisture inside the wall. Instead, they repel rain from the outside while allowing water vapour to escape.
This matters because exterior walls need to breathe. A coating that fully seals the wall can trap moisture inside, which may lead to blistering, damp patches or hidden deterioration. A breathable treatment is often the better option for brickwork, concrete, natural stone and render.
A good waterproof facade coating should:
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Reduce rainwater absorption
- Allow the wall to remain vapour permeable
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Protect against dirt and pollution
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Reduce algae and moss growth
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Help prevent frost damage
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Preserve the natural look of the facade
- Make future cleaning easier
Want to learn more? Read our in-depth guide about waterproofing concrete and stone.
Why exterior walls need protection
Most facade materials are porous to some degree. Brick, mortar, concrete, sandstone, limestone, render and cement based surfaces can all absorb water. When rain enters the pores, the wall remains wet for longer. In winter, absorbed water can freeze and expand, contributing to cracks, spalling and surface damage.
Unprotected facades can suffer from:
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Penetrating damp
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Frost damage
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Algae, moss and mould growth
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Efflorescence and salt deposits
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Dirt and pollution staining
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Dark damp patches
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Flaking or crumbling surfaces
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Reduced thermal performance
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Increased maintenance costs
- Shorter facade lifespan
A dry wall is generally easier to maintain and less vulnerable to weather related damage.
What Nanocoating.co.uk sells
Nanocoating.co.uk supplies specialist cleaning and nano protection products for stone, concrete, tile and mineral surfaces. For facade waterproofing, the recommended system is NC Nano Stone Cleaner followed by NC Nano Coating for Stone, Concrete & Tile.
NC Nano Stone Cleaner is used first. It removes dirt, algae, moss, green deposits, pollution marks and surface contamination. This is essential because a protective coating performs best on a clean and absorbent surface.
NC Nano Coating for Stone, Concrete & Tile is applied after cleaning and drying. It penetrates into the pores of suitable facade materials and helps create a water repellent, dirt repellent and breathable surface.
This system helps with:
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Facade waterproofing
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Exterior wall protection
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Brickwork impregnation
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Concrete facade protection
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Stone wall sealing
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Render protection
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Masonry water repellency
- Dirt and algae reduction
Who is this solution for?
Facade protection is suitable for both domestic and commercial properties. It is useful wherever porous exterior walls are exposed to rain, damp, pollution or weathering.
It is ideal for:
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Homeowners with brick or rendered walls
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Owners of older or period properties
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Landlords and property managers
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Housing associations
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Commercial building owners
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Shops, offices and hospitality venues
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Contractors and maintenance professionals
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Owners of buildings in damp or exposed locations
- Anyone looking for a waterproof facade coating
It is suitable for both small residential walls and larger professional projects.
Which facade materials can be treated?
NC Nano Coating for Stone, Concrete & Tile is suitable for many porous exterior wall materials. Always test first on a small hidden area, especially on coloured, painted, sealed or delicate surfaces.
Suitable materials may include:
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Brickwork
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Mortar joints
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Concrete walls
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Concrete panels
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Natural stone
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Sandstone
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Limestone, subject to testing
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Cement render
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Mineral render
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Facade tiles
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Masonry walls
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Chimneys
- Exterior steps and plinths
The surface must be clean, dry and absorbent enough for the coating to penetrate. Non porous, painted or already sealed surfaces may not be suitable.
How to protect an outside wall from water
To protect an outside wall from water, you need to stop rain from being absorbed into the surface while still allowing internal moisture to escape. The recommended system is NC Nano Stone Cleaner followed by NC Nano Coating for Stone, Concrete & Tile.
A practical process is:
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Inspect the wall for damage
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Repair cracks, open joints and loose materials first
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Clean the facade with NC Nano Stone Cleaner
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Rinse or remove loosened contamination as instructed
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Let the wall dry completely
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Apply NC Nano Coating for Stone, Concrete & Tile evenly
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Allow the product to penetrate
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Avoid application during rain or frost
- Let the coating cure properly
After treatment, rainwater should bead or run off more easily instead of soaking into the wall.
Is waterproofing brickwork a good idea?
Yes, waterproofing brickwork is a good idea when the brick and mortar are porous, sound and suitable for treatment. It is especially useful on walls exposed to driving rain, damp conditions or frequent algae growth.
Brickwork impregnation can help:
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Reduce penetrating damp
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Keep walls drier after rain
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Reduce frost related surface damage
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Limit green algae and moss growth
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Reduce dirt absorption
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Preserve the appearance of the facade
- Lower maintenance needs
However, brickwork should not be coated over existing problems. If there are structural cracks, failed mortar joints, rising damp or trapped internal moisture, these issues should be addressed first. Facade waterproofing is protection, not a repair for serious building defects.
What is the best waterproof coating for exterior walls?
The best waterproof coating for exterior walls depends on the wall material and the goal. For many brick, concrete, stone and render facades, the best solution is not a thick visible coating, but a breathable nano impregnation.
NC Nano Coating for Stone, Concrete & Tile is a strong option because it:
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Penetrates into porous mineral surfaces
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Creates water repellent protection
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Allows the facade to remain breathable
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Does not form a heavy visible film
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Helps reduce dirt adhesion
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Helps reduce algae and mould conditions
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Preserves the natural look of the wall
- Is suitable for many exterior wall materials
This makes it a practical waterproof facade coating for homes and commercial properties.
Is nano coating the right product to waterproof a facade?
Yes, nano coating is the right product for many facades when the aim is breathable, invisible water repellency. Unlike some film forming paints or sealers, NC Nano Coating for Stone, Concrete & Tile is designed to penetrate into the surface rather than sit as a thick layer on top.
Nano coating is suitable when you want to:
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Protect brickwork without changing its appearance
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Make concrete facades water repellent
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Reduce rain absorption in stone or render
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Keep the wall vapour permeable
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Reduce future dirt and algae build up
- Avoid a glossy or painted look
It is not the right solution if the wall is structurally damaged, actively leaking through cracks or already coated with a non absorbent paint. In those cases, repair or specialist advice may be needed first.
How much does it cost to damp proof an outside wall?
The cost to damp proof an outside wall depends on the size of the wall, the condition of the surface, whether repairs are needed and whether you do the work yourself or hire a contractor.
Typical cost factors include:
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Wall area in square metres
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Amount of dirt, algae or moss
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Need for repointing or crack repairs
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Access requirements such as ladders or scaffolding
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Product quantity needed
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Labour costs if professionally applied
- Whether the project is domestic or commercial
DIY facade protection with NC Nano Stone Cleaner and NC Nano Coating for Stone, Concrete & Tile is usually cheaper than professional damp proofing work. However, if the wall has serious damp, structural cracks, failed render or internal moisture problems, professional assessment may be required.
Why cleaning before facade waterproofing is essential
A waterproof facade coating only works properly on a clean, dry and absorbent surface. Dirt, algae, moss and pollution can block the pores and prevent the coating from penetrating evenly.
That is why NC Nano Stone Cleaner is an important first step. It prepares the wall by removing contamination before protection.
Cleaning first helps remove:
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Green algae
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Moss and organic deposits
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Dirt and dust
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Pollution staining
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Surface grime
- Residues that block absorption
After cleaning, the facade must be allowed to dry fully before NC Nano Coating for Stone, Concrete & Tile is applied.
Facade coating versus facade impregnation
Facade coating and facade impregnation are often confused, but they are not the same.
A traditional facade coating usually forms a visible surface layer. It may change the appearance of the wall and can reduce breathability if not chosen carefully.
Facade impregnation penetrates into the surface and protects from within the pores. It is usually invisible and keeps the original look of the wall.
For many UK buildings, impregnation is preferred because it offers:
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Invisible protection
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Breathable performance
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Natural facade appearance
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Reduced water absorption
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Less dirt adhesion
- Lower maintenance
NC Nano Coating for Stone, Concrete & Tile works as an impregnating nano treatment for suitable mineral surfaces.
Exterior wall protection in UK weather
UK facades often face wind driven rain, frost, damp air and pollution. South and west facing walls may receive more weather exposure, while shaded north facing walls may develop algae and moss more quickly.
Waterproof facade protection helps keep walls drier and cleaner in these conditions.
It is especially useful for:
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Exposed brick walls
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Older porous masonry
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Concrete exterior walls
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Rendered facades
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Chimneys
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Garden walls
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Coastal or rural properties
- Buildings affected by driving rain
Regular inspection is still important. Reapply protection when water no longer beads or when the wall starts absorbing rain again.
How often should a facade be waterproofed?
The frequency depends on material, exposure and weather conditions. Many exterior wall treatments last for several years, but no treatment lasts forever.
General guidance:
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Check the facade every year
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Test whether water still beads on the surface
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Reapply when water begins soaking in
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Exposed walls may need treatment sooner
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Protected walls may last longer between treatments
- Clean the wall before every reapplication
If a wall starts looking damp for longer after rain, it may be time to clean and recoat.
Problems prevented by facade waterproofing
Using NC Nano Stone Cleaner and NC Nano Coating for Stone, Concrete & Tile helps prevent or reduce:
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Rainwater penetration
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Penetrating damp risk
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Frost damage
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Algae and moss growth
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Mould on exterior surfaces
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Dirt and pollution staining
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Efflorescence risk linked to moisture movement
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Weathering and surface ageing
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Increased maintenance
- Long term facade deterioration
The cleaner prepares the facade. The coating protects it.
Frequently asked questions (Q&A)
What is facade waterproofing?
Facade waterproofing is the treatment of an exterior wall to reduce rainwater absorption. With NC Nano Coating for Stone, Concrete & Tile, the wall becomes water repellent while remaining breathable.
How to protect an outside wall from water?
Clean the wall with NC Nano Stone Cleaner, let it dry fully and apply NC Nano Coating for Stone, Concrete & Tile. This helps stop rainwater from penetrating the surface.
Is waterproofing brickwork a good idea?
Yes, if the brickwork is porous, sound and suitable for treatment. It helps reduce penetrating damp, dirt absorption, algae and frost related damage.
What is the best waterproof coating for exterior walls?
A breathable nano impregnation is often best. NC Nano Coating for Stone, Concrete & Tile protects without forming a thick visible layer.
How much does it cost to damp proof an outside wall?
The cost depends on wall size, condition, repairs, access and whether you apply it yourself or hire a professional. DIY treatment with Nanocoating.co.uk products is usually more affordable than professional application.
Is nano coating the right product to waterproof a facade?
Yes, for suitable porous facades. It is ideal for invisible, breathable water repellency on brick, concrete, stone, render and masonry.
Do I need to clean the facade first?
Yes. Use NC Nano Stone Cleaner before applying NC Nano Coating for Stone, Concrete & Tile for the best result.
Protect your facade with Nanocoating.co.uk
A facade protects the building, but the facade itself also needs protection. Rain, frost, pollution, algae and dirt can all damage exterior walls over time.
NC Nano Stone Cleaner prepares the surface by removing dirt, algae and contamination. NC Nano Coating for Stone, Concrete & Tile then protects suitable facades with a breathable, water repellent nano treatment.
Whether you need a waterproof facade coating, exterior wall water protection, brickwork impregnation or a practical way to reduce facade maintenance, Nanocoating.co.uk offers a reliable system for cleaner, drier and longer lasting exterior walls.
About Nanocoating.co.uk
At Nanocoating.co.uk, our specialists develop high-quality nano coatings and nano cleaners for a wide range of surfaces, helping you protect materials for longer and spend less time cleaning.
Our products are manufactured in the Netherlands and developed with performance, safety and sustainability in mind. They are formulated without intentionally added PFAS and developed in accordance with applicable chemical safety and regulatory requirements, including UK REACH requirements for the Great Britain market.
Whether you want to protect glass, wood, stone, metal, textiles, sanitary surfaces or outdoor materials, Nanocoating.co.uk offers professional-grade nano coating solutions for everyday use at home, in the garden and in commercial environments.
Why customers choose Nanocoating.co.uk
✅ Money-back guarantee if you are not satisfied
✅ Free UK delivery on orders over £40
✅ Order before 23:30 on working days for same-day dispatch
✅ Secure purchase protection through Trusted Shops
✅ Safe and reliable payment options, including Klarna and credit card
✅ High-quality nano coatings and nano cleaners manufactured in the Netherlands
✅ Formulated without intentionally added PFAS
✅ Developed with performance, safety and environmental responsibility in mind
✅ Specialist nano coating and nano cleaning solutions for cleaner, easier-to-maintain surfaces
At Nanocoating.co.uk, we believe surface protection should be effective, easy to apply and safe to use. That is why our nano coatings and cleaners are developed to deliver long-lasting performance while avoiding unnecessary substances and supporting responsible product formulation.