I have a block and beam construction on the First Floor, do I need to use any insulation for the hydronic underfloor heating

Downward heat losses are approximate 10 % with any underfloor heating system.  Therefore it is always best to use some insulation on the FF also.

We recommend a minimum of 30 mm insulation as this will prevent any rooms over heating on the ground floor.

See more floor constructions below;

https://www.underfloorheatingsystems.co.uk/underfloor-heating-design/floor-construction/

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What pump will I get with my water/wet underfloor heating system?

Can I order the underfloor heating online?

Orders up to 20th December(12pm) Will Be Delivered Next Day - Orders After 20th December Will Be Delivered 4th January 2019 Dismiss