Painting Pebble Dash is not an easy task

Don't worry about the looks of your pebbledash exterior with the right approach and materials that drab grey or pink coloured lumpy pebbledash can be transformed into an attractive weatherproof finish.

With the correct specification, trades skills and materials you can have a nice looking house, without the need of removing it all (subject to survey)

What is pebbledash and how it is applied

A pebbledash finish usually comprises of sand and cement render coats (most often two coats of render) with various kinds of pebbles or other aggregates such as pea gravel literally thrown or cast into the render. Problems with pebbledash can include drab looking exteriors, pebbles constantly shedding, (especially after rain fall) cracks, delamination and subsequent damp problems.

It can also be a real turn off for would-be home buyers

 

So how do you repair and paint pebble dash  (AKA pebbledash pebbledashing, or Harling in Scotland )

Here we show you how to refurbish pebble dash and how to prepare this rugged finish before painting.

Although pebble dash is very hard wearing and reletivlly cheap to apply, fashion changes and most homeowners don't want that course sandpaper look that you often get with pebble dashed homes.

Other problems with pebble dash are that the stones or pebbles tend shed themselves all the time,  dropping on the paths etc so not many people wish to have the walls of their house pebble dashed.

So what can be done to revitalise that worn out old pebble dashed finish on your home?. Even if the pebble finish has cracks, or is going bald and losing bits it can be fixed and renovated.

Below are some gallery photos of a  pebble dash spray painting project we recently completed (August 2018) for Merton Village Hall Ponteland Newcastle.

As you can see from the before treatment pictures the pebble used was large in size and sharp and angular in shape, resulting in visitors often getting clothes scuffed on their way in!. Pepple dash is not the most friendly of finishes, often older folk will recall the pain of the knee scarring after riding into pebbledash garages or sheds (or is this just a Northern thing!)

In this project large cracks had formed above the window heads (as they often do) allowing some penetrating damp. The dash in places had started to lose a lot of the pebble some pebble dash walls we survey look as if they have got mange they lose that much pebble) (pebble dash is a dry dash finish where the aggregate is cast into the butter cost of render roughcast is where the pebble is mixed into the render so its encapsulated and doesn't shed pebbles)

The way to paint pebble dash professionally

Wash down, the walls, repair any cracks, repair any loose sections and re-texture the repairs to match the surrounding finish.

Then the walls can be painted. Be prepared for some hard work and you may have to do this every five years or so, more often if the jobs not been done right or you use cheap paint.

In the project below, after repairs and washing the walls were treated with a slurry mix of 1 part cement to 2 parts sharp (plastering sand will do nicely) with added latex SBR.

This is all mixed to a cream-like consistency and it is brushed and worked into the wall. Best mask up the windows as this mixture will readily stick to glass (and your hands so don't forget the marigolds!)

Why do we do this slurry coat before we paint pebble dash walls?

We do this for a few reasons: To fill out and soften the surface, to weld the pebble on the wall and to stabilise it.

Once this slurry coat has dried it is then primed and we then spray the walls with a choice of high-performance coating such as Silicone finishes. The high-performance wall coatings encapsulate the pebble dash aggregate and provide a nice durable new finish that will last many years.

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