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# Calculating how many floor slabs for insualtion.

• 27-10-2021 12:17pm
Registered Users Posts: 122 ✭✭

Hi all, wondering can you help me here.

We are putting down the floor slabs soon (2 x 75mm slabs). I see I have to measure the perimeter area ratio? How would I do that? I haven't a clue. Is there any online calculator I can use to see how many full slabs I need?

Example: My front room is 4900 x 4500cm so would that be roughly 5 or 6 sheets?

Thanks,

• Moderators, Regional North West Moderators Posts: 43,682 Mod ✭✭✭✭

You posted this earlier. How many threads do you need?

• Registered Users Posts: 122 ✭✭

I put it in wrong section. My apologies.

• Registered Users Posts: 12,415 ✭✭✭✭

Simple.

Multiply length by width.

Multiply slab length by width ( normally 2.4 m X 1.2 m = 2.88 sq m).

• Registered Users Posts: 2,006 ✭✭✭

In your example you would need 8 sheets for a single course or 16 for the two.

you might get away with 15 sheets.

• Registered Users Posts: 12,415 ✭✭✭✭

• Registered Users Posts: 122 ✭✭

Thanks so much for the help on the that everyone. Got my measurements done and will order a few extra in case.

• Registered Users Posts: 2,006 ✭✭✭

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