Pebbledash? Yuk! We hate pebbledash, and so do many of our customers, but what can be done about having a house with pebbledash on the outside?
Many people opt for the expensive and potentially harmful practice of having the house re-dashed, but there is a far better, and cheaper solution, which retains the pebbledash but adds a splash of colour and a weatherproof finish too, but what is it?
Pebbledash was invented, so the saying goes, by the Scots, way back in time, about 500 years ago.
It was used to cover poor quality bricks with a rudimentary weatherproof wall covering, and gained popularity in England during the post WW1 housing boom, again, to cover poor quality building materials.
Pebbledash is often referred to as “harling” in Scotland, but there are subtle differences between the two.
Most modern pebbledash has nothing at all to do with pebbles, instead flint chips are used and the correct term for this wall covering is SPAR DASH.
Times, and tastes, have changed, so if you have a pebbledashed house, what do you do with it?
When the time comes to do something about scruffy pebbledash, walls with cracks and bald spots with missing pebbles, possibly damp appearing inside the house, it’s tempting to contact a pebbledashing company to have it re-done, but wait!
There are 2 ways to renew pebbledash, the first being forced removal of the old dashed surface, and the application of a new coating of pebbledash. I would advise you against that.
Removing pebbledash which is still firmly stuck to the bricks can cause untold damage, and in some cases could negatively affect the structure of the house.
The other way, the “cowboy builder” way is to simply render over the top of the old pebbledash.
This often means that areas of hollow pebbledash are not repaired, just covered over, harbouring damp that can strike back when you least expect it.
Another issue is if new dash is put onto old dash it increases the structural load on the walls, an extra weight added that your house would not have been designed for and cause subsidence and bowing of walls in extreme cases.
Finally, adding more dash to old pebbledash means that the areas around the sides of your windows, your doors and so on, will be compromised with the added width, meaning you may not be able to open your windows as wide as before, and if you do, your upvc will get scratched.
It is not advisable, for the above reasons, to add more pebbledash over old pebbledash. just don’t do it!
The owner of this house in Ipswich wanted a new look but without the hassle of removing the old pebbledash.
It wasn’t just pebbledashed walls, there was brick too, some painted, and some bits left unpainted.
A bit of a patchwork quilt if you like, so of course they wanted a fully uniform finish across the whole house, with some unpainted brick remaining at the front.
The painted pebbledash didn’t look great
Over time many of the pebbles on the wall have fallen off, which left an uneven texture on the wall, something that simply paint will not hide or enhance in any way.
The first thing we always do when starting work on any house is to very thoroughly check the walls. Check for what though?
We analyse the wall surface in depth, looking for signs of cracks for a start.
Some of these would be very obvious, but some cracks maybe hiding underneath a poor quality paint job, like this place.
If you have your home exterior painted by a local decorator, you may recall he probably never did those checks, because he would have known that his paint job will not last very long, and wants to be called back a coupe of years later to do it again.
Painting a house, in the traditional sense of the word, with textured pebbledash walls is no mean feat and if you have ever tried it yourself, due to the rough nature of the wall surface, it will take ages using masonry paint, and guarantied it will look awful once finished.
We don’t. When we paint a house with an exterior wall coating we know that we won’t be needed again for 20 years, which is the life span of the coating.
Once we have located any building defects, we of course repair them to a professional standard.
Once the repairs have been done, we invite the client outside to double check that the work we have done not only are they happy with it, but also they can see what was agreed when they signed the contact, has been carried out.
It is worth noting that whatever home improvement work you have done to your home, inside or outside, you must always get it in writing before they start, including the price.
We also check for signs of damp and hollow render or loose pebbledash.
These are then repaired before we move to the next stage, which is masking up the doors and windows and putting sheets onto the floor outside, to alleviate any potential mess.
Any trees or plants near to the house are also protected.
Here we can see the start of the masking up process
The next stage after we mask up the house is to apply what is known as “bagging” which is a bonded cement slurry, hand painted across the wall and acts a stabiliser, filling in the millions of tiny pin prick holes we find across the wall.
In this case, all the pebbledash areas to be painted had the coating, plus the brick areas the client wished to be painted also had this.
You can see from the photo below that our process does not hide the profile or shape of the bricks
You may also notice in the photo the resin bound driveway they had installed.
It’s a great system and I myself have one at my own house.
Anyway, moving on, once the bagging coating is applied we allow to dry overnight before we start the next essential process involved in applying an exterior wall coating.
The primer.
This is carefully applied by hand across all walls of the property and allowed to dry.
(By now if you are sat reading this because you need your own house repainting, you will already see that we are very through and far more in-depth in terms of our prep work than your traditional local painter and decorator).
Once the primer is fully dried on the outside walls, we then get our spray machine out of the van and start to mix up the batches of pain to feed it during the spraying process, the part of the job which is not only the most satisfying, it’s the quickest part of the whole process.
The spray emits a very thick and generous coat of wall coating, a bit like a very thick paint, and it is shot onto the walls, filling in all nooks and crannies.
As our system is textured (It contains millions of tiny Italian marble chippings, known as Perlite) so you can guess if something contains a substance as hard as marble onto your walls, it’s going to be durable and keep the weather at bay.
Once the spraying is finished, we clean the pump and put it back into the van for the next job.
We then remove all the masking, pick up the dust sheets and have a good old tidy up and clean across the whole outside of the house.
And we then bring the customer out for the final inspection of their newly painted home.
So what are the main benefits of having a wall coating instead of normal paint?
- No fading, chipping, delamination, cracking or peeling
- Resists rain, snow, dirt, mould and pollution
- Lowers your home heating bills, saving money.
- A 20 year written guarantee
- Conceals cracks, scruffy pebbledash and uneven walls.
- Cures condensation and penetrating damp.
- Never fades, with beautiful shades, textures and colours.
- Stops erosion, cracks, flaky paint and damp issues
Having a pebbledash exterior wall coatings is not only far less hassle, and in some cases, CHEAPER than have new pebbledash put on the walls, it looks better, lasts over 20 years and comes in a variety of colours to enhance your home.
Our wall coating system is fully guaranteed to stop damp, and will not crack, fade, chip or peel.
How to get a free quote to have this long life paint system on your house.
It could not be easier, just give us a call on 0800 970 4928
Lines are open Monday to Saturday, or if you are a busy bee, you can leave a voicemail for us at any time of the day or night.
Alternatively you can send us an email with your requirements here.
Common questions, and expert answers related to painting pebbledash
Is pebbledash the same thing as Harling?
Pebbledash and harling are similar exterior finishes used in construction, but they are not exactly the same. Both techniques involve applying a mixture of small stones or pebbles to the exterior of a building, but there are some differences in the materials and methods used.
- Pebbledash:
- Pebbledash typically involves applying a mixture of small stones or pebbles to a wet render or mortar on the exterior of a building.
- The stones or pebbles are thrown or pressed into the wet surface, and they adhere to the mortar, creating a textured finish.
- The mixture may also contain other materials such as sand and cement.
- Pebbledash was commonly used in the 20th century as a decorative and protective finish for exterior walls.
- Harling:
- Harling is a similar technique used in Scotland and other parts of the United Kingdom.
- In harling, a wet mortar mix containing small stones or chips is thrown or troweled onto the exterior surface of a building.
- The stones become embedded in the mortar, creating a rough, textured finish.
- Harling is often associated with traditional Scottish architecture.
While both pebbledash and harling involve applying small stones to the exterior of buildings, the specific methods and materials can vary. The choice between pebbledash and harling may also be influenced by regional building traditions and preferences
What are the downsides in applying new pebbledash over existing, poor condition pebbledash?
Applying new pebbledash over existing, poor condition pebbledash may have some downsides and challenges. Here are a few considerations:
- Adhesion Issues:
- If the existing pebbledash is in poor condition, it may have issues with adhesion. The new pebbledash might not bond properly with the old surface, leading to potential peeling or detachment over time.
- Surface Irregularities:
- Poor condition pebbledash may have uneven surfaces, cracks, or areas of damage. Applying new pebbledash over such irregularities can result in an uneven finish, compromising the aesthetics of the final surface.
- Moisture Trapping:
- If the existing pebbledash has moisture-related problems, such as water ingress or trapped moisture, applying new pebbledash without addressing these issues can exacerbate the problem. Moisture trapped between layers can lead to long-term damage, including mold growth and structural issues.
- Weight Considerations:
- Adding another layer of pebbledash increases the weight on the building’s exterior. This might be a concern if the structure is not designed to support the additional load. It’s essential to assess the building’s capacity and make any necessary structural adjustments.
- Repairing vs. Overlay:
- In some cases, it might be more advisable to remove the existing poor condition pebbledash rather than applying a new layer over it. This allows for a proper assessment of the underlying structure and ensures that any necessary repairs are made before applying a new finish.
- Aesthetics and Longevity:
- Poor condition pebbledash may affect the overall appearance of the new finish. Additionally, if the underlying issues are not addressed, the new pebbledash may not last as long as expected, leading to the need for more frequent maintenance.
Before deciding to apply new pebbledash over existing poor condition pebbledash, it’s crucial to assess the current state of the surface, identify any underlying issues, and determine whether the substrate is suitable for the new application.
Consulting with a qualified contractor or building professional can help ensure that the best course of action is taken for the specific situation.
How long does pebbledash last for?
The lifespan of pebbledash can vary depending on various factors, including the quality of the installation, the materials used, climate conditions, and the level of maintenance. Generally, well-maintained pebbledash can last for several decades.
Here are some factors that can influence the longevity of pebbledash:
- Quality of Installation:
- A professionally installed pebbledash finish is likely to last longer than a poorly executed one. Proper preparation of the substrate, correct application of the mortar mix, and thorough embedding of the stones contribute to the durability of the finish.
- Materials Used:
- The quality of the materials, including the type of mortar mix and the stones or pebbles used, can affect the lifespan of pebbledash. High-quality materials are more likely to withstand weathering and other environmental factors.
- Climate and Weather Conditions:
- The climate of the region plays a significant role in the longevity of pebbledash. Harsh weather conditions, such as extreme temperatures, heavy rain, or exposure to saltwater, can accelerate wear and deterioration.
- Maintenance:
- Regular maintenance can extend the lifespan of pebbledash. This may involve cleaning the surface to remove dirt and debris, addressing any cracks or damage promptly, and repainting or resealing the finish as needed.
- Structural Movement:
- If the building experiences significant structural movement or settling, it can impact the integrity of the pebbledash over time. Properly addressing any structural issues is essential to maintaining the longevity of the finish.
- Protection from Biological Growth:
- Biological growth, such as mould, algae, or moss, can affect the appearance and durability of pebbledash. Regular cleaning and, if necessary, the application of anti-fungal treatments can help protect the finish.
In general, well-maintained pebbledash can last 30 years or more. However, it’s essential to monitor the condition of the finish over time and address any issues promptly to ensure its continued longevity.
Regular inspections and maintenance can help identify and address potential problems before they become more significant issues, although pebbledash that has been overpainted with an exterior wall coating not only looks better, it will last longer too.
Can Pebbledash prevent damp and mould?
Pebbledash, when properly installed and maintained, can contribute to the protection of a building’s exterior and help prevent some issues related to dampness and mould. Here are ways in which pebbledash may offer some level of protection:
- Water Resistance: Pebbledash is typically applied with a mortar mix that includes cement, which can provide a certain level of water resistance. This can help prevent water from penetrating the exterior walls and entering the building, reducing the risk of dampness.
- Surface Protection: The texture and density of pebbledash create a protective barrier on the exterior surface of the building. This can shield the underlying structure from the impact of rain, snow, and other weather elements, minimizing the risk of moisture infiltration.
- Ventilation: Pebbledash allows for some degree of ventilation between the stones, which can help moisture evaporate rather than being trapped against the wall. Adequate ventilation is crucial for preventing dampness and mould growth.
While pebbledash can offer some protection against dampness, it’s important to note the following:
- Maintenance: Regular maintenance is essential to ensure that the pebbledash remains in good condition. Any cracks or damage should be promptly repaired to prevent water ingress.
- Underlying Issues: Pebbledash is not a solution for underlying structural issues that may contribute to dampness. It’s crucial to address any problems with the building’s structure, such as leaks or poor drainage, to effectively prevent dampness.
- No Guarantee: While pebbledash can help mitigate moisture-related issues, it’s not a foolproof solution. In extremely wet or humid conditions, and if the pebbledash is poorly maintained, there is still a risk of dampness and mould.
To enhance the protective properties of pebbledash, it’s advisable to combine its application with other measures such as proper drainage systems, good ventilation in the interior spaces, and addressing any issues with the building’s structure.
Consulting with a building professional can help assess the specific needs of your property and determine the best strategies for preventing dampness and mould.
What are the advantages of having a spray-applied exterior wall coating on a pebbledash house?
Applying a spray-applied exterior wall coating to a pebbledash house can offer several advantages, enhancing both the aesthetic appeal and protective qualities of the property. Here are some potential benefits:
- Weather Resistance:
- Exterior wall coatings are designed to provide a protective barrier against the elements. A spray-applied coating can enhance the weather resistance of the pebbledash, preventing water penetration and protecting the underlying structure from damage caused by rain, snow, and other weather conditions.
- Improved Insulation:
- Some exterior wall coatings have insulating properties, helping to improve the thermal performance of the building. This can contribute to energy efficiency by reducing heat loss and potentially lowering heating and cooling costs.
- Enhanced Durability:
- The coating can add an additional layer of durability to the pebbledash surface, making it more resistant to wear and tear over time. This can extend the lifespan of the finish and reduce the frequency of maintenance.
- UV Protection:
- UV-resistant coatings can protect the pebbledash from the damaging effects of sunlight. Over time, exposure to UV radiation can cause fading and deterioration of the surface. A protective coating can help maintain the colour and appearance of the pebbledash.
- Resistance to Algae and Fungi:
- Some exterior wall coatings include anti-algae and anti-fungal properties, helping to prevent the growth of mould, algae, and fungi on the surface. This can contribute to a cleaner and more aesthetically pleasing exterior.
- Ease of Application:
- Spray application can be a efficient and uniform method, ensuring even coverage over the pebbledash surface. This can result in a smoother and more consistent finish compared to manual application methods.
- Low Maintenance:
- Once applied, a well-formulated exterior wall coating can reduce the need for frequent maintenance. It can be easier to clean, and its protective qualities may help resist the accumulation of dirt and grime.
- Colour Options:
- Exterior wall coatings are available in a variety of colours, allowing homeowners to change or refresh the appearance of their pebbledash house. This can be an advantage for those looking to update the look of their property.
It’s important to note that the effectiveness of a spray-applied exterior wall coating depends on the quality of the product and the proper application. Consulting with professionals and choosing a reputable product can help ensure that the coating provides the desired benefits for your pebbledash house.
If you would like a free quote to have our exterior wall coating system applied to your house, please call us on 0800 970 4928
Alternatively you can send the team an email here.