Renova Ultra system

The RENOVA ULTRA System is designed for radiant systems

with low-thickness screed, thus low thermal inertia, but

associated with an insulation layer so as to comply with the

standard UNI EN 1264-4 with regard to the minimal insulation

required underneath a radiant system.

However, meeting this requirement is not simple since one of

the prerequisites for the system, in order to maintain a screed

thickness of 10 mm over the pipe is that "the bearing area be

load-bearing", which is no longer the case when a layer of

flexible insulation is placed below the RENOVA panel. In this

case, therefore, it would be necessary to increase the thickness

of screed above the pipe so as to avoid possible cracking, thus

losing the advantages of low inertia.

In order to find the correct solution, Wavin Italia SpA carried out

a series of tests with reference to the Technical Construction

Standards of the Ministerial Decree of 17 January 2008.

The result is the RENOVA ULTRA Panel, a knob panel made of

high-density EPS with rigid covering sheet. Bosses are small

and evenly spaced in order to reduce the size of the areas

with reduced screed thickness. EPS added with graphite helps

reduce the insulation thickness (i.e. reduces the flexing layer

thickness) while maintaining a high thermal resistance. The EPS

high density ensures high mechanical resistance and lower

compression load stress.

The panel originates from the combination with a 14 mm-thick

pipe to minimise the overall system thickness, while achieving

acceptable hydraulic load losses.

This combination allows maintaining the reduced thickness

above the pipe (10 mm) providing the system a number of

advantages:

•

Compliance with the UNI EN 1264-4 standard: the

coupled insulating panels meet the requirements of the

most typical installations, above a heated environment, a

non-heated environment or directly on the soil;

•

Low thermal inertia: thanks to the reduced thickness,

the system comes up to full capacity quickly, making the

system particularly suitable both for heating and cooling.

•

Guarantee of mechanical resistance: the use of the

RENOVA ULTRA panel, coupled to a screed with the

characteristics referenced in tests carried out by Wavin

Italia SpA, for use compatible with the characteristics

referenced in the same tests, guarantees a finished floor

free of defects and durable over time;

•

Installation speed: the use of the RENOVA ULTRA panel

already coupled to the insulating panel allows installation in

one step rather than two, first installing an insulating panel

and then the bonded RENOVA panel.

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Underfloor Radiant Systems - Product Guide

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