RAFTERLOC

Thin-R

XT/RLOC

Unilin Rafterloc Pitched Roof Insulation has a unique width variation feature offering a 20-30mm adjustment margin to ensure a tight fitting, high performance insulation locked between rafters.

Used in conjunction with a layer of Unilin XT/TL or XT/PR_UF below the rafters, the Rafterloc system provides a robust, cost effective solution to insulating sloped rafters to the most efficient standards with minimal wastage and reduced fitting time

The improvement in energy efficiency standards required by the recent revision of Building Regulations in Ireland has demanded better insulation U-values to be achieved with better detailing to ensure improved performance.

Benefits

Specification Clause

The pitched roof insulation shall be Unilin Insulation Thin-R XT/RLOC manufactured to EN 13165 by Unilin Insulation, comprising of a rigid Polyisocyanurate (PIR) core between low emissivity foil facings. The Thin-R XT/ RLOC_ _ mm with an Agrément declared Lambda value of 0.023 W/mK to achieve a U value of _ _ _W/m2K for the roof element. To be installed in accordance with instructions issued by Unilin Insulation.

Refer to NBS clause P10 140, K11 695, K11 55, P10 15, P10 50

Discrepancies in timber widths and spacings can result in excessive cutting and loose fitting insulation when using standard sized boards; Rafterloc ensures that a tight fit is achieved every time, ensuring high performance robust detailing

Rafterloc features a slotted mechanism that allows the board to lock between the rafters in pitched roof application.

Resistance ‘R’ Values

The resistance value of any thickness of 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 0.023 W/mK and thickness 75mm -> 0.075/ 0.023 -> R-Value = 3.25. In accordance with EN 13165, R-Values should be rounded down to the nearest 0.05 (m2K/W)

Pitched Roof

Unilin Rafterloc boards are for use in pitched roof constructions where the insulation follows the slope of the roof

Because of Unilin’s high thermal performance, a single layer of Unilin Rafterloc placed between the rafters only may achieve the U-Value requirement. However, with the requirements for very low U-Values, and the fact that Thermal Bridging should be addressed, a two layer solution is generally required. A second layer of Unilin XT/PR_UF Pitched Roof Board should be placed below the rafter to provide a robust solution. Refer to product guides for ventilated roofs in Unilin XT/ PR_UF literature for guidance.

The Unilin Rafterloc features a slotted mechanism that allows the board to lock between the rafters in application. Discrepancies in timber widths and spacings can result in excessive cutting and loose fitting insulation when using standard sized insulation board; Rafterloc ensures that a tight fit is achieved.