Hello,
I hope someone here can help me.
We are currently renovating a house.
I have requested a quote from a plasterer because we want to have all the rooms plastered. An employee already came to take the measurements. In his quote, he states the wall area as 220m² (2,370 sq ft).
I took the time to measure everything myself. I simply multiplied each wall’s length by its height and always subtracted windows and doors. I came up with a total of 158m² (1,700 sq ft).
I spoke to the plasterer about this, and he said the 220m² figure is correct because doors and windows that are smaller than 2.5m² (27 sq ft) are included. Only windows larger than 2.5m² are deducted. He referenced the DIN 18350 regulation for this.
To me, this doesn’t make any sense, since I am paying for materials and labor based on the square meters.
The actual area should be 158m², not 220m².
It’s like buying 20 liters of fuel at a gas station but being charged for 40 liters at the register.
Does anyone understand this and could help me see it more clearly?
Thanks a lot.
Best regards,
Kristof
I hope someone here can help me.
We are currently renovating a house.
I have requested a quote from a plasterer because we want to have all the rooms plastered. An employee already came to take the measurements. In his quote, he states the wall area as 220m² (2,370 sq ft).
I took the time to measure everything myself. I simply multiplied each wall’s length by its height and always subtracted windows and doors. I came up with a total of 158m² (1,700 sq ft).
I spoke to the plasterer about this, and he said the 220m² figure is correct because doors and windows that are smaller than 2.5m² (27 sq ft) are included. Only windows larger than 2.5m² are deducted. He referenced the DIN 18350 regulation for this.
To me, this doesn’t make any sense, since I am paying for materials and labor based on the square meters.
The actual area should be 158m², not 220m².
It’s like buying 20 liters of fuel at a gas station but being charged for 40 liters at the register.
Does anyone understand this and could help me see it more clearly?
Thanks a lot.
Best regards,
Kristof
Winniefred schrieb:
In my opinion, if a quote is based on a measured survey, it should also be clearly verifiable. I only know measured surveys that include details on corners and reveals, not just rough estimates. If it's stated that way in the DIN standard, a rough estimate might be acceptable (and the invoice would then be created in detail), but who as a layperson reads through a DIN standard? A note in advance or on the quote would be helpful.Regarding the original poster's question, the contractor gave a proper answer and explained how their calculation is structured. It complies with the DIN standard and is also quite common.Of course, it’s possible to provide more detailed calculations. But who really wants to bill separately for every single edge and reveal in the end?
The total amount will almost certainly be the same in the calculation.
S
Simon-18925 Mar 2021 08:57Hello,
so approximately 62m² (670ft²) are being measured over. 62m² (670ft²) / 2.5m² (27ft²) = at least 25 openings! Quite an achievement to measure everything so precisely during a first quick quote.
Preparing quotes according to the relevant standards is absolutely common. But maybe you will find another company that breaks down all the reveals in the quote with millimeter precision.
so approximately 62m² (670ft²) are being measured over. 62m² (670ft²) / 2.5m² (27ft²) = at least 25 openings! Quite an achievement to measure everything so precisely during a first quick quote.
Preparing quotes according to the relevant standards is absolutely common. But maybe you will find another company that breaks down all the reveals in the quote with millimeter precision.
Simon-189 schrieb:
So approximately 62m² (670ft²) are over-measured. 62m² (670ft²) / 2.5m² (27ft²) = at least 25 openings! Quite an achievement to accurately measure everything in a first quick estimate.Each interior door has two sides (2*2m² (2*21ft²) per door), so that actually seems rather low to me.Winniefred schrieb:
A note in advance or on the quote would be nice, though.What do you mean, @Winniefred? The contractor should include the entire VOB in the quote, right? Or recite the builder's regulations before entering the construction site during a casual chat? 😉 The original poster simply misunderstood. That's it!
But probably the misunderstanding would not have happened if the contractor, who rarely receives inquiries from end consumers, had the construction manager or architect as the client or their expert as the contracting party.
ypg schrieb:
Simple calculation: I choose where I fill up. They all have different prices, sometimes even a 10% difference.What does the price have to do with it? It was just an analogy: filling 20 liters and paying for 40 liters surely has nothing to do with price differences.
ypg schrieb:
That's how it is! The "gaps," meaning what you subtracted, remain to cover the edge work costs.Reveals and lintels are additionally calculated by linear meter (foot). So I’m paying twice.
ypg schrieb:
You’re free to choose someone else. There’s nothing more to say about it. If you don’t like the price, you go to the next company or request a new quote.This is not about the price yet, but about the unclear measurement.
11ant schrieb:
Measuring 220 sqm (square meters) more and charging 158 sqm "to the second" are practically the same. Where there are openings, reveals are added – this doesn’t balance out exactly, but who really wants the offer letter to be more expensive than the actual work?Reveals and lintels are charged additionally by linear meter (foot).
Similar topics