to merely having an R-value based on reflectivity alone . RoofReflex ’ s reflective , low emissivity surface also gives the product an additional level of performance when it ’ s installed facing a cavity .
How Can RoofReflex Assist With New Part L U-Value Requirements ?
RoofReflex is used in the external element of walls and roofs , therefore not contributing to the truss / stud depth . Owing to its excellent thermal qualities , you can reduce the amount of rigid insulation required . To give an example of this in a new build roof scenario , the introduction of RoofReflex above the rafter could potentially reduce the PIR insulation between the truss to a single 150mm board , and still achieve a 0.11 W / m ² K u-value , when used in combination with a highly reflective vapour control layer , such as Novia VC200 , behind the plasterboard within a low emissivity cavity .
RoofReflex doesn ’ t only provide an alternative solution to new Part
L requirements , it can also help to reduce solar gain in summer by reflecting heat away from the building thanks to its reflective surface . Additionally , being an insulation and not just a multifoil , RoofReflex has acoustic benefits , plus it will also help to reduce thermal bridging .
The modern-day aim is to build airtight and well-ventilated houses . RoofReflex is both airtight and
vapour permeable , and it has integral tape to ensure continuity of airtightness .
With a great many benefits , RoofReflex is an excellent solution to many of today ’ s construction issues and there is peace of mind with every installation , as RoofReflex is backed-up by a 10- year warranty .
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