Skip to main content

Alternative Building Material (expanded Polystyrene)

With the current increasing cost in building a house in Nigeria, and with the Nigeria Culture/Mentality

“I must have my own House” a lot of Nigerians have been looking for various building material options which are relatively cheaper and perform the same function as the conventional ones.

One of such material options which I will be focusing on this thread is Expanded Polystyrene (EPS), This material is strong, durable, light weight, water resistance with excellent thermal insulation which is very popular in Environmentally “Green” Homes.

Expanded Polystyrene is an affordable and incredibly sustainable choice in the construction circle due to versatility and performance.

It can be used in construction as a structural base infill for example in floor Slab, Roads, Bridges Railway infrastructure, or as a structural element of its own, Roof Eaves, wall (partition), D├ęcor Materials.

Structural test carried on EPS has showing that after used in construction for 30 years still remain strong as when first used.

I will be focusing on Polystyrene Roof Cornices (Parapet) in the next few days

If you are in a dilemma on the cost of constructing Roof Parapet for your building, or your building is located on a loose soil, I will advise you to go for Polystyrene roof parapet due to the following reasons.

It is Light in weight
It is cheaper compared to concrete (that is it eliminates the cost of wood form work both material and labour, less reinforcement)
It is faster and easy to install.
It is Neater than most parapet as it has been formed using a machine.

Let us look at how Polystyrene Parapet is installed

The proper way of installing Polystyrene is first to install a 2 x 2 softwood around the building area where the parapet will seat to take levels and also to make sure it is set on a straight line. In order to reduce cost you can make use of rope line to take reference between the two corners of the side of a building and when you are sure it is straight, then nail at interval of 600mm (2 feets) and place the parapets on it.

The Second stage is fastening of the Roof parapet to the open roof beam reinforcement ( less I forget you can either leave part of the roof beam reinforcement say 1” open when you are doing the roof beam casting or cast the roof beam after the Roof parapet has been fastening to the roof reinforcement with the aid of binding wire and nails).

The next stage is that a light casting of saying 1½” is done on the roof beam to cover all open reinforcement.

The Last stage is to screed the joints of the Roofing parapet to have a uniform and smooth surface.

Next time we will be looking at the cost of Polystyrene parapet as against in situ Parapet. For supply and installation of polystyrene materials contact:


Popular posts from this blog

Cement, Sand And Granite (concrete) Mix Explained

Good Day:
Lets explain concrete mix and how your bricklayer is expected to mix your next foundation / decking.

Most time as Non-Construction experienced house builders, we put our trust on the bricklayers to mix our concrete rightly, however very few of them can be trusted to do the right thing - If your bricklayer negotiated for material and labour (its even more difficult to trust him) because he might be maximizing gain and reducing materials; often times even when you buy your materials; they tend to put in excess sand, granite ratio to minimize time spent in doing the job.


Choosing the right foundation for that project type & soil.

Wikipedia defines foundation as: A foundation (or, more commonly, base) is the element of an architectural structure which connects it to the ground, and transfers loads from the structure to the ground. Foundations are generally considered either shallow or deep.
It is advisable to know suitability of each types of foundation before deciding which best suit your design type and soil. We would discuss them briefly below: 
Types of Foundation and their Uses
The following are different types of foundations used in construction:
1. Shallow foundation Strip foundationPad or Individual footing foundationRaft or Mat foundation 2. Deep Foundation Pile foundation We would only focus on the shallow foundation in our discussion here; 
1a. Strip foundation
Strip footings are commonly found in load-bearing masonry construction, and act as a long strip that supports the weight of an entire wall. These are used where the building loads are carried by entire walls rather than isolated columns.
This type …