General Information

RAVATHERM XPS X 300 SL Inverted Roof Insulation is a unique rigid, closed cell type extruded polystyrene board with integral high density skin. RAVATHERM XPS X 300 SL utilises infra-red blocking particles to scatter and reflect heat radiation. RAVATHERM XPS X 300 SL has a Zero Ozone Depletion Potential (ODP), a Global Warming Potential (GWP) of less than 5 and a Green Guide to Specification A+ rating.

Use with RAVATHERM XPS X MK Water Flow Reducing Layer prior to the installation of paving, ballast or a green roof.

BBA Certificate 21/5874

For use with appropriate Waterproofing Systems.

Suitable Applications
RAVATHERM XPS X 300 SL is suitable for use in roofs, roof terraces, enclosed balconies over heated space and insulated walkways in an inverted roof construction. When used in the inverted roof constructions listed in the Fire Performance section below roof constructions incorporating RAVATHERM XPS X 300 SL achieve Broof(t4) Classification to BS EN 13501-5 as required by Approved Document B 2019 edition, Section B4, Limitations on roof coverings.

RAVATHERM XPS X 300 SL is not suitable for use in inverted roof applications on specified attachments such as projecting open balconies, projecting enclosed balconies, recessed open balconies or recessed enclosed balconies. RAVATHERM XPS X 300 SL is not suitable for use in warm roof applications (where the waterproofing is installed above the insulation board).

Fire Performance
As a roofing system for roofs, roof terraces, enclosed balconies over heated space and insulated walkways
In accordance with Annex of Commission Decision 2000/553/EC, when used in an inverted roof specification including an inorganic covering of either loose laid gravel with a thickness of at least 50mm or a mass ≥ 80 kg/m², sand/cement screed to a thickness of at least 30mm, or cast stone or mineral slabs of at least 40mm thickness a roof system incorporating RAVATHERM XPS X 300 SL can be considered to be unrestricted under the national Requirements (Classification Broof(t4) to BS EN 13501-5:2016).
BS EN 13501-5:2016 – When tested with a covering of 50mm thick concrete paving on 50mm high InStar plastic pedestal supports a roof construction incorporating RAVATHERM XPS X 300 SL achieved a classification of Broof(t4) and as such is unrestricted by the National Building Regulations.
BS 476 Part 3: 2004 – When tested with a covering of 50mm thick concrete paving on 20mm high InStar plastic pedestal supports a roof construction incorporating RAVATHERM XPS X 300 SL achieved a classification of EXT.FAA and as such is unrestricted by the National Building Regulations.
As a product in isolation
BS EN 13501-1:2016 – RAVATHERM XPS X 300 SL Inverted Roof Insulation contains PolyFR, a REACH compliant flame retardant, that ensures Euro Class E performance. RAVATHERM XPS X 300 SL Inverted Roof Insulation contains PolyFR, a REACH compliant flame retardant, that ensures Euro Class E performance to EN13501-1.retardant, that ensures Euroclass E performance.

For full information regarding installation and specification please see Product Data Sheet.