XtroWall Plus is a superior performance insulation with Agrément declared Lambda value of 0.020 W/mK and a Euroclass E fire classification. It is faced with an aluminium foil and is available with engineered jointing to deliver improved Thermal Bridging detailing.
This lower Lambda Value improves UValues and meets NZEB standards, providing an excellent choice for passive and low energy builds. XtroWall Plus achieves a passive UValue of 0.15 W/m2K in a traditional cavity wall. Building with Xtrowall Plus, a residual cavity is maintained, offering excellent protection against wind driven rain.
| Sub Brand | Xtroliner |
| Fire Declaration | Euroclass E |
| Material | PIR or Polyisocyanurate insulation |


