So today i am talk about roofing sheets and the possible cost of roofing a 3 bedroom flat here in Nigeria. Before we start, i would like to first make a few things known to us all, and so i urge you to follow me as i unveil a possible roofing estimate slowly below
What Is The Function of a Roof?
The roof system functions as the primary sheltering element for the interior spaces of a building. Its form and construction should control the flow of water and also the passage of air and water, heat and cold.
A roof must be constructed in such a way that it would be able to support its self weight and other external weights such as wind and snow and the weight of workmen fixing it.
This simply means we do no want to design a roof system that will fail the very moment a carpenter finds himself on top.
Selecting a Roof system
In Nigeria, a lot of new homeowners allow such things as trend and word of mouth push them into making a heavy mistake.
But as a determined individual, when your building gets to the roofing stage, a few things you must consider before choosing a roof system includes;
Aesthetics
Durability and
Cost.
You must ensure a proper consultation is made so as to ascertain the best suitable and effective system for your building and also ensure you do not fall in the hands of fraudsters like i see them on Nairaland
What Is The Cost Of Roofing 3 Bedroom Flat In Nigeria?
I see a lot of Nigerians, both home and abroad ask for estimates on Nairaland and the truth is most of them end up getting estimates that are very outrageous and totally wrong.
Funny thing is these estimates are often given carelessly!
Let it be known that the cost of roofing 3 bedroom flat in Nigeria will always depends on the roof pitch, type of roofing material used, roof design, the project managers and the location of your site.
How to Calculate the cost Of Roofing Sheets for 3 Bedroom flat
As an Example, i am going to estimate the cost of roofing sheets for a 3 bedroom apartment measuring L 12m by W 14m as attached below! Where L = Length and W = Width or wideness.

Note: This plan has a different dimension 
First thing to do is to find the area by Multiplying both dimensions
Thus 12 x 14 = 168mÂ²
Now Lets add some 20% to the total area as the Slope or Pitch of the roof
20/100 x 168 = 33.6
thus 168 + 33.6 = 201.6mÂ²
Next, we measure the length and width of our chosen roofing sheet
It could be any of;
Cameroonian Zinc
Zinc
Asbestos
Short or Long span Aluminium roofing
We are going to assume The length of each roofing sheet to be used is measured 2.6
Lets also assume the Width is 1.8 meter
Thus, we multiply the dimensions to get the area of one roofing sheet
Thus L x B = 2.6 x 1.8 = 4.68mÂ²
Now we know the area of each roofing sheet, we also know the area of the total area to be roofed
The next step is to Divide the bigger area (Area of roof) by the smaller area
(Area of each roofing sheet)
Thus 201.6/4.6 = 43.8 Sheets
It Therefore means we will be needing some 44 roofing sheets to cover the entire roof
Now we know the number of roofing sheets required for 3 bedroom flat
Lets assume after conducting market survey, we realized the average cost per roofing sheet is N1520
What we are going to do is Multiply the Number of roofing sheets by the average cost or cost of each roofing sheet
Thus, 44 x 1520 = N67,000
It therefore means the cost of buying roofing sheets for a 3 bedroom flat is 67,000.
Please bear in mind that this does not include the cost of wood, nails and labor charge.
Recommended
Do not forget that the cost and price were only assumed, it therefore requires that you conduct a good market survey before anything.
Ok, i have done my part. Now you know what it would cost to buy roofing sheets for your project and i think this is a very important aspect of roofing estimate. Thus, if your building meets these dimension and you are choosing zinc roofing sheet which i guess is one of the cheapest out there.
Feel free to contact me if you need a personal estimation for wood
You have helped me tremendously. I could not have successfully built my house from outside the country without you. I wish I knew you, I would have bought you endless drinks. You are great, my brother.
These are the kind of comments that keeps me going sir! I have my contact details on the "Contact page" you can always reach out to me anyday and i appreciate every time you spend learning sir
You made a big mountain so easy to climb with your analysis. God bless you sir.
Super!
I would like to know how many sheets of long span that will roof my three bed room flat
I wound love to know
How Manny sheet of long span that will roof my three bed flat
I want to roof my three bedroom flat all rooms is suit .I'm adopting the high roofing type and I'm using long span roofing.
I love this so much please my house is 3bedroom now about to roof it and l live outside Nigeria please can you send me your number so I can call you
Please, how much will it cost to roof my 3 bedroom flat measuring 15/14 meters. I want to use aluminum long span. Thank you so much.
It is really hard and almost impossible estimating without the roof plan and section my dear. So if you need an estimate done for you, ensure you submit the roof plan via our email!
Thanks u so much sir
I need help how many Gerard roofing sheets do I need for 3 bedrooms flat please?
Thank you sir you have help me alot,my engr.and carpenter told me to pay for 400meter of roofing sheet for 3bedroom with the cost of #3000 permeter
Always research very well sir. The workmen we have in Nigeria are out to kill (With a few exceptions)
Can't give a blind estimate sir. Will need the roof plan to estimate properly
I need wood estimate for 4bedroom flat
Pls. Can u hlp me with estimate of wooden and asbestos slate for roofing my 3bedroom measuring 25ft wide and 65ft lomg
I am so much delighted to go through this teaching
I need more guide on which roofing material is better, I want to go for step ties