List of Pages

Stucco

Stucco exteriors have been in use for centuries and for good reason. It provides  an economical, long lasting cover that can be textured and coloured to coordinate with the rest of your selected finishes. It is easily incorporated into different styles,  contemporary to Tudor, classic to Spanish.

HOW IT IS DONE:

Preparation

In the simplest terms concrete is added in layers to the exterior of your home. There are several steps involved in creating a durable, beautiful result.

Once the framing and sheathing material are up, the house is covered in  water resistant layers. This serves to protect the wood from rot. The next step is to install weep screeds at the bottom of the wall for better drainage and casing beads at the doors and window. Casing beads serve as a stop for the plaster.

The next step is to install the metal lath. This is a metal grid system that the concrete layers will be applied to. The metal lath supports the weight of the stucco and gives it something to adhere to.

Application of the Coats

Now the messy fun starts! A scratch coat is applied to the metal lath with a trowel. It consists of cement, plaster sand and water. Texture and consistency are critical here and experience makes all the difference. Once in place the surface is scored or scratched with horizontal lines, hence the name ‘scratch coat’. The scoring leaves a textured surface that gives the second coat something to hang onto.

The scratch coat is then wet cured. Wet curing is a process by which the scratch coat, is allowed to set but kept damp at the same time to prevent it from drying too rapidly. Adding water to the cement when it is initially mixed sets off a chemical reaction called hydration. The extra water during the curing process allows the cement particles to create  a good bond with the surrounding  aggregate and other cement particles. This is how the cement hardens properly.

After the scratch coat has cured sufficiently the brown coat is mixed and applied. While its’ composition is similar to the scratch coat the finished product is very different. The brown coat is much smoother than the scratch coat. Although it has a gritty feel, it is flatter and more attractive than the scratch coat. Since it is a uniform surface it is the perfect base for your stucco. The brown coat must also be wet cured but for a much longer period than the scratch coat.

Final Coat

The third and final coat is the stucco itself. It is at this stage that colours can be blended and a final texture can be applied.

The style of the home will be a determining factor on the overall texture. The range of finish styles is quite large and includes, cat face, dash, lace, worm, sand and smooth. Done over large areas the selection of your final texture will have a major impact on the homes’ appearance.

Colour also plays an important role in the look you want to achieve.  A wide range of colours are available that are mixed directly into the final coat mix. Another option is to add colour after the coat is applied or to add additional colours to create a mottled effect.

Why Renoteck?

Years of experience applying stucco in the variable climate of Alberta has resulted in a reputation for quality installation, timely completion and professional conduct. Whether you require our services for new home application or to do upgrades on existing stucco, be assured that Renoteck will provide the best service possible.