Decothane Ultra 25 and 30 Year Roof Waterproofing Systems
Manufacturer: Sika
Materials: Polyurethane
Decothane Ultra 25 Year and 30 Year Roof Waterproofing Systems have a finished thickness of 1.8 and 2.2 mm respectively, and consists of:
- Decothane Ultra —a single-component, liquid-applied, moisture-triggered, aliphatic polyurethane
- Decothane Ultra Base Coat —a single-component, liquid-applied, moisture-triggered, aromatic polyurethane
- Concrete Primer —a primer for concrete substrates
- Concrete Primer LO —a low odour primer for concrete substrates
- Metal Primer—a two-part primer for the treatment of previously untreated metal surfaces and for spot priming of areas of corroded metal after preparation
- Sika Reemat Premium Reinforcing Mat —a non-woven glass fibre reinforcing mat which is embedded in the polyurethane while still wet, and available for use in strips to cover individual cracks, joints or details
- Sika-approved carrier membrane —a self-adhesive membrane for fully bonding over substrates with open joints,such as insulation boards, as a supporting layer
- Skid-Inhibiting Grit —to provide a non-slip finish to the final coat.
Number: 14/5158 PS2
Issue date: 12/04/2022
Number: 20/1015
Issue date: 20/12/2020
Approved for use on
Flat Roofs Pitched Roofs
For use on new and existing,flat and pitched limited access roofs
Substrate
Concrete Existing Coatings/Roof Paints Insulation Boards Metal Mineral Wool Insulation PUR or PIR Insulation Reinforced Bituminous Membranes Single Ply Membranes - EPDM Single Ply Membranes - PVC Single Ply Membranes - TPO Timber
- Concrete (primed)
- bituminous roofing felt including mineral surfaced
- single-ply membranes including PVC, TPO and EPDM (the Certificate holder can recommend an appropriate primer)
- metal (primed)
- Sika-approved carrier membrane
- existing coatings/roof paints
- timber in conjunction with Sika approved carrier membrane
- polyisocyanurate (PIR) foam insulation boards in conjunction with Sika-approved carrier membrane
- mineral wool insulation (MW) in conjunction with Sika-approved carrier membrane
Durability
25 Years
Decothane Ultra 25Year and 30Year Roof Waterproofing Systems will achieve a life expectancy of at least 25 years for Decothane Ultra 20 and Decothane Ultra 20 BC,and 30 years for Decothane Ultra 25and Decothane Ultra 25BC.
Installation Requirements
Installation of the systems must be carried out only by specialist roofing contractors trained and approved by the Certificate holder.
Puncture Resistance
P3 - accessible for maintenance of plant and equipment and to pedestrian traffic
Most Compressible Substrate (eg insulation)
P4 - roof gardens, inverted roofs and green roofs)
Most Compressible Substrate (eg insulation)
Fire Safety
When tested to DD CEN/TS 1187 : 2012,Test 4 and classified in accordance with BS EN 13501-5 : 2016,the following systems achieved a BROOF(t4) classification:
- a system comprising an 18 mm plywood substrate
- S-vap 5000E SA vapour control layer,
- an 80 mm thick PIR insulation board adhered using polyurethane adhesive
- a layer of Primer 600, Carrier Membrane SA
- a first coat of Decothane Ultra applied at 1.0 litre per m2 reinforced with Sika Reemat Premium reinforcement
- and a topcoat of Decothane Ultra applied in two coats at 0.7 litres per m2(1)
- a system comprising an 18 mm plywood substrate,
- S-vap 5000E SA vapour control layer,
- an 80 mm thick PIR insulation board adhered using polyurethane adhesive,
- a layer of Primer 600, Carrier Membrane SA,
- a first coat of Decothane UltraBase Coat applied at 1.0 litre per m2reinforced with Sika Reemat Premium reinforcement, and a topcoat of Decothane Ultra applied in two coats at 0.8litres per m2(2)
(1)Fire test and classification reports, reference336141and WF 336202respectively, conducted by Exova Warringtonfire. Report available from the Certificate holder.(2)Fire test and classification reports, referenceQ100348-1004and Q100348-1005respectively, conducted by BRE Global. Report available from the Certificate holder.
The designation of other specifications should be confirmed by reference to the requirements of the documents supporting the national Building Regulations
Certified Products
The following products are also covered by the same certification:
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Downloads
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BBA – Decothane Ultra 25 & 30 year roof waterproofing system
Document class :
Document type : Link
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ETA 20/1021
Document class :
Document type : File
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