How Much Does Dry Dashing Cost? The dry dashing prices normally start at around €1,995 and go up depending on the size and state of your home’s exterior walls. Small or partial jobs may start at €1,295 depending — once again — on a number of factors.Click to see full answer. Also asked, what is dry dash?Dry dash comprises pre-washed and screened dashing aggregate that comes in different colours and sizes. These are blended with a specially formulated, coloured polymer-enriched mortar cement. This means it offers a much-improved surface finish than traditional cements and mortars that use just sand and cement.Similarly, can you paint Pebbledash? Pebbledash isn’t the most straight forward surface to paint. The heavily textured nature of the render means painting it using traditional methods (brush & roller) can be considerably more challenging than painting a smoother surface. Several coats may, therefore, be required to achieve an even application of paint. Simply so, is rendering expensive? External rendering using a sand and cement ‘scratch coat’ and a finer render topcoat, followed by two coats of external masonry paint will cost in the region of £40–£60 per m². Rendering and painting a typical three-bedroom semi-detached house with 80m² of walls would therefore cost £3,200–£4,800.How do you mix a wet dash?EN 325. The mixture should be mixed at a ratio of four parts of the mixture to one part cement (4:1) adding water to produce a slurry like consistence. The mixture is then thrown to the wall with a trowel or a scoop to an even texture, generally with a backhand motion, to achieve a texture similar to figure 1.