What is the Best Render Mix for Walls?

Rendering of Walls Gives Them Added Protection

Walls are often made from brick or stone to give them the required stability and strength. The surfaces of these materials are often quite rough and can be quite inconvenient for the residents or users of any living space. It is, therefore, customary to render walls with a render made from cement and sand and occasionally lime.

This cement rendering is a thin mixture made of all these materials that are applied as a surface coat on walls. Quite often this rendering is used on both the insides and outsides of walls. This surface coating also helps the wall to resist dampness and make it weatherproof. The rendering can be smooth or coarse, and it is customary to have smooth surfaces on inside wall surfaces and coarse rendering on outside surfaces. What then is the best render mix for walls? This decision on the best mix can depend on the weather conditions in an area, especially where outside wall surfaces are being treated. Higher cement ratios lead to rendering being more vulnerable to cracks.

Quite often architects and engineers may specify definite mixes for the rendering, but as a rule, a proportion of one part of cement to four parts of sand is conventional for walls that are exposed to the elements. For interior surfaces, the sand quantity is increased to six parts, and some lime may be added. The lime allows for a smoother surface that allows for paint to be applied directly. Many plasterers prefer to use two coats of plaster on wall surfaces. In such cases, the first layer is made of a render mix design that may have a higher proportion of cement. This coat will be of almost three fourth of the thickness of the final rendering. This initial layer is left rough and even scored to leave a proper gripping surface for the final rendering. The top coat will we very thin and may contain a larger proportion of lime. It is possible to make this very smooth.

In many cases, external walls are also given a two-layer treatment. Outside wall plaster thicknesses are normally more than that which is used for inside walls. A 3/4 inch thickness of wall plaster is a minimum for outside wall surfaces, and 1/2 inch for inside walls. Wall preparation of walls is essential for proper rendering and is as important as deciding on the right mix for it. Walls must be clean and free of any fungus or other material. The joints between layers of brick or stone must be raked out to provide a key for the render. The render must be mixed to a consistency that allows the material to be pliable but at the same time enable it to have the desired stiffness. Additives or plasticisers can be used to ensure this, but this can increase costs. 

render mix

Care has to be taken to ensure that any quantity of render that is mixed is used or applied to the wall before the cement achieves its initial set. If this is not done, it may become difficult to finish the wall surface to the desired level of smoothness.

The Dome Home – Ultimate Protection for Surviving Storms and Natural Disaters

Dome Home is a Shelter for the Storm a Pre-Requisite for Survival

Weather systems throughout the state have come to be increasingly severe as well as more frequent over the last number of years. Your choice of circumstance of where you live you  could place you at risk of  tornadoes, cyclones, hurricanes, tropical storms, floods, and earthquakes. We’ve all seen news reports of unfortunate people living in susceptible parts of the world have their houses demolished by the forces.

It does not make sense to rebuild using the same old materials and building system because all the predictions are , storms are going to get much worse and more frequent.

Maybe we should all be thinking of the future about how well equipped our homes are in relation to the looming danders.

A Dome Shell Structure is One Method of Construction That Survives Storms

Dome shaped structures have stood the test of time because of their inherent strength. Using innovative systems, materials and methods it is possible to build beautiful monolithic shell structures like the dome home below.

Monolithic Dome Shell Home

Monolithic Dome Home
Monolithic Dome Home

One of the oldest surviving intact structures in the world in the Panthoen dome in Rome that no invading army has succeeded in tearing down for well over 2000 years

When it Comes to Dome Homes They Look Fascinating, Futuristic and Strange

The beautiful elegant lines of a dome look so simple yet take so much in refined design and process to achieve  those kind of flowing lines. Dome shapes need a mold of some kind and a mold needs a plug and all these elements have to be millimetre accurate to cast elements of a dome such as pre fabricated sections.


Domeshells Australia’s #DreamDome Design

The Storm Shelter's Structure
The Storm Shelter’s Structure


The 3D image of Domeshells #Dreamdome above is a prefabricated dome systems that arrives on your site as a kit. All you need to do is prepare the circular slab according to the exact design provided and your away to assemble up to a 7.0m diamter dome in 2 days using only a couple of tools.

It is more cyclone Category five capable, well insulated and earth quake proof. Its tough outer shell can withstand extreme impact. The #DreamDome is a way to build a magically comfortable home which is also a true shelter from the storm.

The #DreamDome is the brainchild of Chris Brown of Domeshells Australia who is a true pioneer in the development of material composite systems for dome construction in addition to pioneering a range of dome building systems.


A Mini Dome Shelter for the Back Yard

Dome homes, earthquake resistant
Dome homes, earthquake resistant

The above is a great example of a back yard studio dome. Only 3.0 meters in diameter (about 7.6m2) this little cutie is transportable and can be delivered to your back yard and tied down on to its slab giving you not only a “to die for” cuby space but also a very strong storm shelter big enough for the family.

A 3.5m DomeShell Australia Dome Built on Site

Dome homes. resistance for electrical storms
Dome homes. resistance for electrical storms

For Midwesterners who knowledge electrical storms, dome homes are also a smart choice. The shape of the rebar cage acts as a conductor, and attracts the lightning straight to the floor, thus minimizing any damage that may perhaps end result from a lightning strike.

Best Option for Shelter

Floods, earthquakes, hurricanes, and lightning dome homes can endure nearly anything.

I predict that dome structure will become a much more frequent shape of the landscape in the future when survival depends on having the best there is