The Celotex XR4000 range is targeted at ‘cut-to-fit’ applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. XR4000 is also appropriate for use in ceilings, walls and floors.
These thicker board versions can be used in any rafter or joist application where there is the need to achieve improved U Values from those available from a thinner board.
They are commonly used in conjunction with Multi-foil insulation to maximise the thermal property potential of utilising traditional solid insulation and heat resistant barriers.
Common applications include, between and over rafters, between and under rafters, between rafters, pitched roof sarking, ventilated lead covered flat roof, between and under flat roof joists, between and under ceiling joists, balconies and terraces, loft conversions, loft insulation, single timber frame wall lining, steel stud frame walls, timber frame wall lining, timber frame walls sheathing, Rainscreen cladding, between floor joists, suspended timber floors, between and under floor joists, beam and block floors, concrete slab floors, upgrading concrete slab floors, basement upgrades and conversions, garage upgrades and conversions
The insulation boards are available in nominal dimensions of length (mm) 2400 x width (mm) 1200. Required ancillary materials include large-headed nails, screws, washers, aluminium joint tape and sealant.
This multi-purpose PIR insulation board has long been at the heart of Celotex product range and achieves an A+ rating when compared to the BRE Green Guide.
Celotex Xtra-R is a premium performance multi-purpose rigid polyisocyanurate foam (PIR) thermal insulation board with reflective foil facings. It provides multi-purpose cavity wall insulation boards that are uniquely reinforced with glass-fibre and features strong reaction-to-fire performance when measured in accordance with new European Standards.
Like the Celotex GA400 range, XR4000 is installed in conjunction with an appropriate lining panel, for example standard gypsum plasterboard to BS 1230-1 : 1985.
Board size: 1200 x 2400mm, Thickness's 110 - 200mm, Lambda: 0.022 W/mK, Low emissivity foil facings
Celotex XR4000 (Extra-Resistance) range of high performance thermal insulation provides reliable long term energy savings for buildings. Its low emissivity foil facers give improved thermal insulation and provides a vapour control layer when board joints are taped. Thermal bridging through studs and rails is reduced, and it can be nailed direct to stud framing, and can be dry-lined directly over insulation
These boards can be used in conjunction with appropriate internal lining boards, such as Gyproc or Knauf Plasterboards or associated products such as Knauf Thermal Laminate or Gyproc ThermaLine high performance wall-boards, as an insulating dry lining system to improve the thermal insulation of existing and new, solid or cavity masonry walls or timber-frame walls of dwellings or buildings of similar occupancy, type and conditions.
Celotex is also commonly being used in conjunction with Multi-Foil insulation products such as SuperFoil, SuperQuilt, TLX Silver, TLX Gold, Gen-X, Actis Triso Super 10, and other Actis hybrid insulation.
Certified under BBA certificate number 95/3197 and 09/4667
For the purpose of U value calculations to determine if the requirements of the Building (or other statutory) regulations are met, the thermal conductivity (90/90 lambda value) of the boards may be taken as declared within the Celotex BBA Certificate No. 95/3197.
The requirement for limiting the heat loss through the building fabric will be satisfied if the U values of the building elements, including thermal bridging, do not exceed the maximum values in the relevant Elemental Method given in the national Building Regulations ...
England and Wales - Approved Documents L1 and L2, Table 1 Scotland - Technical Standards J3.2, Tables 1, and J8.3 Northern Ireland - Technical Booklet F, Tables 1.2 and 1.4