How it Works
Why spend thousands painting the exterior of your house?
Is the outside of your property looking tired and in need of a lick of paint?
Before you consider re-painting it, think about investing in a textured exterior wall coating system that will last for 15 years – guaranteed!
In order to guarantee perfect results every time, our three-step process is applied by our craftsmen on time, on budget and with minimal disruption to you.
Our three-step wall coating application process:
In order for the primer coating to create a true and long-lasting bond, we need to start with a clean and stable surface.
By power washing and wire brushing the exterior of your property, we’ll remove all loose dirt and paint. If you’ve got any residual mould or algae, we apply biocides before applying solvents to remove grease and other pollutants.
Any cracks in the render, blown brickwork or pebbledash are ground out and filled with a special polymer resin. Loose render is replaced and other defects repaired.
We take great pride in ensuring your plants, bushes, lawns and driveways are undamaged or marked in any way. We fully mask off the area we are working on with tape and heavy duty paper.
To ensure there is a powerful and long-lasting bond with the final wall coating, we apply a specially formulated primer coating to tackle uneven porosity, friable surfaces and previously painted substrates.
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Suitable For All Exterior Walls
Common stucco is made up of hydraulic lime, sand and hair and is an exterior render. It has three layers, an aggregate, a binder and water.
There are three types of stucco render.
- 1. Fat lime, sand and cement sometimes mixed with animal hair as reinforcement
- 2. Hydraulic lime and sand (hydraulic mix)
- 3. Fat lime with pozzolanic additive and sand
It is essential to identify the material used when doing repair work to make sure there is continuity – both historical and structural. The wrong mortar mix will not be compatible with the original.
Common problems with Stucco Even though Stucco is durable, regular maintenance is needed to prevent the surface breaking down due to excessive water penetration. This also causes bulging due to loss of adhesion. There is also the common problem of water freezing if it becomes trapped which can lead to structural damage.
Pebbledash – walls repair and renovation Pebbledash is the word used to describe external rendering where small stones are “dashed” or thrown onto the topcoat of the render before it dries. This then creates a weathering surface.
Spar is a similar product which uses jagged chippings. This is available in various forms. You can choose between ordinary stone, Canterbury or Dolomite. If you are looking for a neutral colour, ordinary stone is the correct choice. For colour options choose Canterbury or Dolomite.
Roughcast is similar to pebbledash but incorporates the stones into the mix instead of adding them on top like pebbledashing. The stones are larger and coarser than the ones used in pebbledashing.
Negative effects of pebbledash Long term damage and erosion can occur due to the fact that pebbledash is too absorbent. Rain water is absorbed far too easily which feeds penetrating damp.
Verdigris, a blueish-green finish, can be problematic on north facing walls and in damp areas. Over the passage of time, pebbles fall off and cracks appear leaving the wall underneath vulnerable to the elements.
Repairs are possible but the repair work is extremely noticeable and not aesthetically pleasing. Removing the pebbledash takes a lot of time and is very expensive.
There is a method called “Bagcoat” used by Weathershield Coatings. This is a mix of latex, sand and cement that is brushed onto wall surfaces. This covers all cracks, loose pebbledash and hides any unsightly marks. A completely waterproof and decorative finish is applied afterwards.
Brickwork repair and restoration Brick is durable and long lasting as long as the mortar joints are in good condition.
Common problems with brick walls
Many houses are adversely affected by deteriorated pointing. The cement is penetrated by water which is absorbed. In cold conditions the water freezes, the cement expands and is forced out of the brickwork.
The effect of this is that single bricks can crumble or the worst case scenario is that the entire wall collapses. Moisture, time and dirt can negatively affect the look of the brickwork, making it dirty or stained. As moisture evaporates, deposits of salt are drawn out causing the bricks to get wet – this results in efflorescence.
If bricks are exposed to water regularly, freezing water can expand and break off the top surface of the brick. The inner surface is then exposed. The brick is said to be “spalled”.This will result in bricks crumbling completely after time.
Replacing bricks if the outer face is damaged is the best option, as otherwise the brickwork will be exposed to potential further damage. Removing weak or damaged pointing to an approximate depth of 10-20 mm and replacing pointing is recommended.
Weathershield Coatings Clearshield helps to stop any further deterioration by sealing porous material to stop damp from penetrating. Water vapour can evaporate which prevents the problems caused by freezing water in the brickwork.
Cement render repair and restoration Rendering is a process which involves making buildings weatherproof.
Different parts of the building are covered with a durable coating so that water cannot penetrate. It can also be used as a decorative finish.
Types of rendering
Cement render – A mix of cement and sand. 1st coat is 3 parts sand and 1 part cement. The 2nd coat is 4 parts sand, 1 part cement. Cement lime render: Cement, lime and sand. One part lime, one part cement, six parts sand.
Acrylic render: Cement, polymer, lime, sand is ready mixed.
Older buildings tend to be susceptible to damp problems, mainly due to how they were built and the less sophisticated materials used. If moisture isn’t able to evaporate from external brick, stone or render, cracks can occur.
The property is not able to “breathe” to allow moisture out. This may be due to a structural fault.
There is a problem when the render is no longer bonded to the wall. You can find this out by tapping the wall. If it sounds hollow it is no longer bonded. In this situation, water can penetrate, causing damp and leading to the water freezing which will cause the render to fall off.
The best way to find out if damage is occurring is to carry out a full inspection. Any cracks found need to be opened up and repaired. If the render is no longer bonded to the wall (this can be checked by tapping the render with a key or hammer) it should be cut away and repaired. It is difficult however to get an exact surface match whilst repairing rendering. This match can be achieved with Andura textured coating which will cover any unsightly marks
Tyrolean render repair and restoration
Tyrolean render repair and restoration Tyrolean is a pre-mixed material used on properties in the 1970s and 1980s to prevent damp and give character to dilapidated buildings. This product is available in different colours and is applied by machine to a thickness of 3 – 4mm.
Tyrolean can easily blow or bubble as it is only approximately half a centimetre thick.