Product Description
The Upper Facing
The upper facing of Kingspan Thermaroof® TR31 is an FSC certified, 6 mm nominal thickness, WBP exterior grade plywood, secondary bonded to the insulation core.
The Core
The core of Kingspan Thermaroof® TR31 is manufactured with Nilflam® technology, a high performance rigid thermoset polyisocyanurate (PIR) insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
The Lower Facing
The lower facing of Kingspan Thermaroof® TR31 is a low emissivity composite foil, autohesively bonded to the insulation core during manufacture. This reflective, low emissivity surface improves the thermal resistance of any unventilated cavity adjacent to the board.
Compressive Strength
The compressive strength of Kingspan Thermaroof® TR31 typically exceeds 150 kPa at 10% compression, when tested to BS / I.S. EN 826: 1996 (Thermal insulating products for building applications. Determination of compression behaviour).
Water Vapour Resistance / Resistivity
Adjusted for the effect of unsealed board joints, the non–plywood component of, the product achieves a resistance far greater than 100 MN.s/g, when tested in accordance with BS EN 12086: 1997 / I.S. EN 12086: 1998 (Thermal insulating products for building applications Determination of water vapour transmission properties).
When the joints between boards are sealed by the application of a continuous mastic sealant to the whole of the upper surface of the joists and cross noggins, a vapour resistance greater than 1000 MN.s/g can be achieved by the non–plywood component of the product.
For the purposes of calculation of condensation risk, the resistivity of the plywood component of the product should be taken as 520 MN.s/g.m
Resistance to Solvents, Fungi & Rodents
The insulation core is resistant to short–term contact with petrol and with most dilute acids, alkalis and mineral oils. However, it is recommended that any spills be cleaned off fully before the sheets are installed. Ensure that safe methods of cleaning are used, as recommended by the suppliers of the spilt liquid. The insulation core is not resistant to some solvent–based adhesive systems, particularly those containing methyl ethyl ketone. Adhesives containing such solvents should not be used in association with this product. Damaged sheets or sheets that have been in contact with harsh solvents
Fire Performance
Kingspan Thermaroof® TR31, when subjected to the British Standard fire test specified in the table below, will achieve the result shown, when waterproofed with 3 layer built–up felt and a loading coat of 10 mm chippings. For specifications without the chippings please consult the manufacturer of the mineral surfaced cap sheet for their fire classification details.
Product benefits
High performance rigid thermoset insulation - thermal conductivity 0.022 W/m-K
Insulation, vapour control layer and decking in one board
Proven reputation as a quality composite roof deck
Resistant to the passage of water vapour
Easy to handle and install
Ideal for new build and refurbishment
Non-deleterious material
Manufactured with a blowing agent that has zero ODP and low GWP