XT/PR_UF (FLOORS)

Thin-R

XT/PR_UF (FLOORS)

The floor in any building is an area of considerable downward heat loss when not properly insulated. Thin-R Underfloor will significantly improve the U-Value of new and existing floors.

Thin-R Underfloor is lightweight, easy to install and combines high compressive strength with low thermal conductivity, providing a high performance solution for floor insulation.

Benefits

Specification Clause

The floor insulation shall be Unilin Insulation Thin-R XT/PR_UF (Floors) manufactured to EN 13165 by Unilin Insulation, comprising of a rigid Polyisocyanurate (PIR) core between low emissivity foil facings. The Thin-R XT/PR_UF (Floors) _ _ mm with an Agrément declared Lambda value of 0.022 W/mK to achieve a U value of _ _W/m2 K for the floor element. To be installed in accordance with instructions issued by Unilin Insulation.

An Environmental Product Declaration (EPD), certified by IGBC is available for this product. Please contact technical support for further details.

Refer to NBS clause M10 290, M10 40, M13 260, M13 40, P10 250, P10 45. Uniclass 25 71 63 66

Resistance ‘R’ Values

The resistance value of any thickness of Unilin insulation can be ascertained by simply dividing the thickness of the material (in metres) by its Agrément declared lambda value, for example: Lambda 0.022 W/mK and thickness 50mm -> 0.050/ 0.022 -> R-Value = 2.27. In accordance with EN 13165, R-Values should be rounded down to the nearest 0.05 (m2 K/W).

1. Good detailing at the wall/floor junction is essential to reduce Thermal Bridging. By placing an upstand of Unilin Perimeter strip (XT/STR) insulation with a minimum 25mm thickness thick around the external and internal wall/floor junctions, a robust detail is created.

2. Thin-R Underfloor is lightweight and suitable for use with underfloor heating. Thanks to its thickness to performance ratio, it allows for reduced insulation thickness. The boards should be laid with closely butted joints, laid staggered with a break bonded pattern and fitted tightly at edges and around any service penetrations.

Thin-R Underfloor provides an efficient means of floor insulation. It has the strength and thermal properties required to reach the high performance U-Values asked for in the Building Regulations.