How do you mix a wet dash?

Asked By: Rossella Sabiote | Last Updated: 30th June, 2020
Category: technology and computing wearable technology
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Often used in the more exposed locations in the north of the UK, wet dash is a mix of several components: three parts sand, one part cement and one part small – usually a sharp granite – gravel. This is all mixed manually and applied to the wall in a thick layer.

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Similarly, how do you mix roughcast?

A standard mix for the roughcast would be 1 part cement to 2-3 part sand mixed with clean water. The stone or aggregate as it is known is then put into the mix. This is usually a 4-5 part aggregate to add to the above mix. Measuring the amounts is known as gauging.

Similarly, how do you use K Rend wet dash? Mix K Rend Roughcast for at least 10 minutes to break down additives, adding 5 - 7 litres of clean water per 25kg sack to obtain a wet plastic mix. While the Dash Receiver coat is still green, throw K Rend Roughcast on to the surface, using a hand scoop or a mechanical applicator.

In this manner, what is the correct mix for rendering?

A common mix ratio used for rendering is 6 parts sand, 1 part cement and 1 part lime. Any general purpose cement can be used, although the sand should be fine and clean of impurities. Coarser sand is usually used as the base layer and slightly finer sand for the top layer.

How is Pebbledash applied?

Pebbledash is a form of render used for the external walls of a building in which the top coat is textured by pebbles and stone fragments to create a rough finish. This is similar to roughcast rendering in which larger stones are applied mixed into the mortar before being applied to walls.

35 Related Question Answers Found

Can you roughcast over roughcast?

maaaaaaaaat. yes you can render over the old if its sound,and fairly fine. but in my experience,to achieve a decent finish it must be stripped back,to either brick or original base coat.

What is the difference between Pebble Dash and roughcast?

As nouns the difference between roughcast and pebbledash
is that roughcast is a crude model while pebbledash is a rendering for external walls, made by scattering small pebbles onto a coat of cement or plaster before it dries.

How long does roughcast take to dry?

2-3 weeks to get to the correct final colour, every manufacturer states that is their curing time.

Can I paint Roughcast?

Yes. Work methodically. Use a brush to cut in on edges and around windows and a roller for the main area of wall. Use a thick knap roller and a paint scuttle, which is like a deep, oblong bucket to put the paint in as this is the best for a heavily textured surface.

How do you make pebble dash look good?


Option three: insulate then render over pebbledash
A beneficial way of ridding yourself of the pebbledash look is by installing 20mm (or thicker, but the thicker you go the more expensive) external wall insulation boards over the top of your pebbledash.

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.

Can you repair Pebbledash?

A pebbledash finish is a layer of shingle (pebbles) thrown against wet rendering so that it sticks. Repairing a patch of pebbledash is fairly easy to do but unfortunately it is difficult to replicate the colour of the existing weather worn pebbles.

Is K Rend better than sand and cement?

We use K Rend and we find it to be a more superior product to sand and cement render. The main benefit of using it is that it is maintenance free once done. If the old render is cracking I would strongly recommend removing the old render first back to bare brickwork.

How do you make render waterproof?

Waterproofing Options and Procedures
  1. Render the walls – use a primer and then sand and cement, incorporating a waterproofer.
  2. Apply a water repellent – this must be a product that is suitable for high levels of salts.
  3. Apply a waterproofing coating – cement based tanking slurry or a bitumen based product.

How many bags of cement make a cube?


One cubic meter of concrete is equal to 1.308 cubic yards of concrete. If there are 5 1/2 bags of cement in 1 cubic yard of concrete, there would be 7.2 bags in 1 cubic meter of concrete. These are the 94 pound bags of portland cement or 42.64 kg bags of cement.

What are the different types of rendering?

Generally, modern render can be divided into three main types: mineral, acrylic and silicone – but there are other options, as I'll present later. Normally these need only one coat of 1mm-4mm thickness, but this is highly influenced by the substrate material used under the render.

What is the difference between sharp sand and building sand?

Builders/soft sand gives more pliability to the mix and will grab the slabs much better than just sharp sand but sharp sand gives a more solid bed.

How much does 1 bag of K Rend cover?

Coverage:- 2 sqm Per 25kg Bag
It can also be used as a scratch coat plaster for internal and external work, as bedding for pavia and as a rubbed up finish suitable for external painting.

How many Metres does a bag of K Rend cover?


SILICONE FT may be used over K-Rend Base Coat as part of a two-coat system, each 10 - 12mm thick. It should be applied to a uniform thickness to line and level. Coverage: 2kg per mm thick per sq metre Required: 20-24kg per square metre appx. SILICONE FT is also designed as a one-coat finish over block-work.

What is wet dash render?

Often used in the more exposed locations in the north of the UK, wet dash is a mix of several components: three parts sand, one part cement and one part small – usually a sharp granite – gravel. This is all mixed manually and applied to the wall in a thick layer.

What is roughcast render?

WBS Roughcast (also referred to as Wet Dash) is a cementitious product incorporating silicone technology to produce an attractive through-colour render with excellent water resistant properties. It is a traditional render which incorporates an aggregate of small evenly sized pebbles into the mix.