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Sika

Decothane Ultra 15

Part of Decothane Ultra 25 and 30 Year Roof Waterproofing Systems

Manufacturer: Sika 

Materials: Polyurethane 

Decothane Ultra 15 Year Roof Waterproofing Systems havefinished thicknessesof 1.5 mm 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 —alow 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 glassfibre reinforcing mat which is embedded in the base coatwhile 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

The systems covered in the Certificate are:

  • Decothane Ultra 15—comprising Decothane Ultra as base and top coats
  • DecothaneUltra 15 BC —comprising Decothane Ultra Base Coat as base coat and Decothane Ultra as top coat.
ETA logo

Number: 20/1015
Issue date: 20/12/2020

BBA logo

Number: 14/5158 PS1
Issue date: 14/10/2019

Approved for use on

Flat Roofs Pitched Roofs 

For use as a waterproofing layer on new and existing,flat and pitched limited access roofs

Substrate

Concrete 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

15 Years 

Under normal service conditions, Decothane Ultra 15 Year Roof Waterproofing Systems willachieve a life expectancy of at least 15 years

Installation Requirements

Installation of the systems must be carried out only by specialist roofing contractors trained and approved by the Certificate holder.

Puncture Resistance

P2 - accessible for maintenance of the roofing only

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 4and 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 Reinforcing Mat
  • and a topcoat of Decothane Ultra applied at 0.5 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 0.75litre per m2reinforced with Sika Reemat Premium Reinforcing Mat
  • and a topcoat of Decothane Ultra applied at 0.75 litres per m2(2).

(1)Fire test and classification reports, reference336142 and WF336203respectively, conducted by ExovaWarringtonfire. Report available from the Certificate holder.(2)Fire test and classification reports, referenceQ100348-1001 and Q100348-1002 respectively, conducted by BRE Global. Report available from the Certificate holder.7.2

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:

  • Downloads

    • BBA Certificate – Decothane Ultra 15 year roof waterproofing

      Document class :

      Document type : Link

    • ETA 20/1021

      Document class :

      Document type : File

Sika

Sika House
Miller Street
Preston
Lancashire
PR1 1EA

T : 01772 259781

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LRWA Is not an accreditation body and does not test products or have a role in determining whether a product or system is fit for purpose. An agrément certificate is only issued for a successful product or system following a detailed assessment including both laboratory testing and inspections by the certificate provider.”