XtroDeck
Compatible with most bituminous based roofing systems containing self adhered underlays with heat activated cap sheets
Superior Performance PIR Insulation
Reaction to Fire: C-s2, d0
XtroLiner
XtroDeck
XtroDeck is faced with an embossed aluminum facing on both sides. XtroDeck is part of Unilin’s comprehensive range of high performance flat roof boards providing total solutions for flat roof projects
Benefits
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Superior Performance PIR Insulation
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Compatible with most bituminous based roofing systems containing self adhered underlays with heat activated cap sheets
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Reaction to Fire: C-s2, d0
Roof Design
XtroDeck is suitable for use with most bitumen based, partially bonded water proofing systems typically including a BS EN 13707: 2013 (Flexible sheets for waterproofing. Reinforced bitumen sheets for roof waterproofing) self adhered base layer or proprietary system. XtroDeck may also be fully bonded. Guidance in regard to moisture and condensation should be in accordance with BS 8217 (Reinforced bitumen membranes for roofing).
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During the construction process, the construction should be protected from rain penetration during breaks in the process
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With fully bonded applications additional care is required to ensure that the construction remains free from moisture. Failure to protect will result in blistering of the waterproof layer.
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With used fully bonded applications, testing certification, guidance on installation and system components must be sought from the system provider.
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This product is not suitable for use with torch on underlays
Falls
The fall on a flat roof should be designed
to ensure that rainfall does not pond.
Roof Loading
XtroDeck is suitable for use on roof decks that are subject to limited maintenance foot traffic. Walkways should be provided on roofs requiring regular pedestrian access. When the roof is complete, protective boarding should be laid if additional site work is to be carried out
Roof Finish
Built up roofing systems should be finished with a suitable reflective layer such as chippings. Advice should be sought from system manufacturer.
Fire Performance
The fire rating for the roof system when tested to EN 13501-5 and BS 476 Part 3 ‘External Fire Exposure Roof Test’ will be dependent upon system specified.
Specification Clause
The flat roof insulation shall be Unilin Insulation XtroDeck XO/XD_ _ _mm thick manufactured to EN 13165 by Unilin Insulation comprising a rigid modified Polyisocyanurate (PIR) core with textured robust low emissivity foil facings with a declared Lambda of 0.021 W/mK. The flat roof insulation shall be installed in accordance with instructions issued by Unilin Insulation
Refer to NBS clause J42 420, J42 10.
Vapour Control Layer
Decks should be primed before the application of the vapour control layer. Reference should be made to BS 8217 when applying the vapour control layer. Carry the VCL past the insulation and seal with the parapet wall.
Laying (Metal Deck)
On metal decks, XtroDeck should be adhered in a PU glue over the vapour control layer. The boards can also be mechanically fixed or adhered with adhesive approved by the system provider. Fixing heads should be sealed
Laying (Concrete Deck)
Ensure concrete decks are laid to provide correct falls to outlets and are clean, dry, without projections. Primer should be laid in accordance with the manufacturer’s instructions. The vapour control layer should be fully bonded to the deck and the XtroDeck should be laid into PU adhesive on the vapour control layer in a break bonded pattern. The boards can also be mechanically fixed or adhered with other suitable adhesive approved by the system provider. Fixing heads should be sealed.
Laying (Timber Deck)
On plywood decks, XtroDeck should be fully bedded in PU Adhesive over a continuous vapour control layer which has been bonded to the deck. The boards can also be mechanically fixed or adhered with adhesive approved by the system provider. Fixing heads should be sealed.
Mechanical Fixing
The specification for fixing Unilin roof boards will vary with the location, roof height/width and topographical data. Architectural specification should be consulted. Generally with 2400mm x 1200mm boards, a minimum of 6 fixings per board are adequate, located between 50mm and 150mm from all edges, additional fixings may be placed along the centre line. Counter sunk washers, 50mm in diameter should be used with each fixing. However, BS 6399 Part 2 or BS EN 1991-1.4: 2005 + A1: 2010 (National Annex to Eurocode 1.Actions on structures. General Actions. Wind Actions) should always be consulted. In two layer systems, all layers should be fixed in accordance with fixing manufacturers instructions
Bitumen Based Built Up Roofing Systems
Technical guidance from the appropriate bitumen waterproofing manufacturer should be sought as to assure proper installation of the bonded built up roofing system. Not suitable for use with torch on underlays.
Fire
Each contract should be assessed for suitability of torch on applications. The suitability of materials, substrates and specifications should be assessed before commencement. Application of the torch on system should be undertaken only by fully trained personnel with appropriate fire precautions and fire extinguishing equipment available at hand. All timber roof components, and most insulation materials are combustible, and will be vulnerable to a naked flame. These materials may be hidden from view. Due attention should be given and all precautions taken. This is the responsibility of the operatives. Not suitable for torched on underlays.
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