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Levelling concrete floor for thermal boards and underfloor heating

Postby Jambi_81 » Mon Nov 09, 2020 9:56 am

I'm just about to level a concrete floor ready for thermal boards for underfloor heating. After taking up the old tile floor there's a number of holes around 3-4cm deep roughly 5 -10cm diameter. I've got levelling compound that can go this deep, but should I patch them with something else first. Or should I fill those with levelling compound first, let dry then do the whole floor?
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Postby stoneyboy » Mon Nov 09, 2020 10:59 pm

Hi jambi_81
Fill the holes first and let it set, then screed the whole floor.
Regards S
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Postby Jambi_81 » Mon Nov 09, 2020 11:40 pm

stoneyboy wrote:Hi jambi_81
Fill the holes first and let it set, then screed the whole floor.
Regards S


Thanks for the reply. Fill the holes with levelling compound?
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Postby stoneyboy » Tue Nov 10, 2020 10:34 pm

Hi jambi_81
Not really worth it just use a cement/sharp sand mix.
Regards S
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Postby Jambi_81 » Wed Nov 11, 2020 9:38 am

stoneyboy wrote:Hi jambi_81
Not really worth it just use a cement/sharp sand mix.
Regards S


Thanks
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