Sika Sikalastic RoofPro Advanced is a single component, cold-applied, moisture-triggered polyurethane membrane. It cures to form a seamless, durable and weather- resistant waterproofing solution.
Sika Sikalastic RoofPro Advanced is ideal for the water-proofing of flat and pitched roof structures, communal walkways, podium decks and terrace roofs. RoofPro Advanced is also recommended for new construction and refurbishment projects and is applicable to existing concrete, roofing felt, brickwork, asbestos cement decks (subject to condition and priming requirements).
- Single component, ready to use
- Cold applied
- Easy and quick application – by spray, brush or roller
- Economic – provides a cost efficient life cycle extension of failing roofs
- Seamless membrane based upon moisture-triggered chemistry
- Vapour permeable
- Retains flexibility at low temperatures
- Waterproof, develops early rain resistance
- Minimal disruption and low maintenance
- Elastic properties – tolerant of thermal movement
- Flexible, impact resistant membrane
- Can be applied all year round above 2°C
- Approved to ETAg 005 (Part 6)
New concrete should be cured for at least 28 days* and should have a pull off strength ≥1.5 N/mm2. Inspect the concrete, including upstands, all areas should be hammer tested. Concrete must be suitably finished, preferably by wood float or steel pan. A power float finish is acceptable where the surface is prepared to avoid laitance (a tamped finish is not acceptable). The surface finish must be uniform and free from defects such as laitance, voids or honeycombing. The substrate must be of a suitable quality and condition to receive the system. Please refer to specification for further details. Laitance, other loose friable material and weak concrete must be completely removed and surface defects such as blowholes and voids must be fully exposed. In severe cases use abrasive blast cleaning, grinding or scarifying equipment to achieve a sound surface. Repairs to the substrate, filling of joints, blowholes/voids and surface levelling must be carried out using appropriate products. High spots must be removed e.g. by grinding. Outgassing is a naturally occurring phenomenon of concrete that can produce pinholes in subsequently applied coatings. The concrete must be carefully assessed for moisture content, air entrapment, and surface finish prior to any coating work. Any requirement for priming must also be considered. Installing the membrane either when the concrete temperature is falling or stable can reduce outgassing. It is generally beneficial, therefore, to apply the embedment coat in the late afternoon or evening. Sika® Concrete Primer or Sika® Bonding Primer, subject to surface assessment tests.
Brick and stone
Bricks, blocks and mortar joints must be sound and preferably flush pointed. Thoroughly clean by power wash and allow to dry. Where there is a risk of algal re-growth on absorbent surfaces use Sika Biowash. Please refer to the Sika Biowash Technical Datasheet for further information. Repair any spalling, flaking or other damage and replace any missing jointing.
Slates, tiles, etc.
Ensure all slates/tiles are sound and securely fastened, replacing obviously broken or missing sections and adequate cross ventilation is in place.
Asphalt can contain volatiles which may cause bleeding and slight non-detrimental staining. The asphalt must be carefully assessed for moisture and/or air entrapment, grade and surface finish prior to any coating works being carried out. Thoroughly clean by power wash and allow to dry. All major cracks should be sealed to allow continuity of the Sikalastic RoofPro Advanced System. Asphalt must be carefully assessed for moisture and/ or air entrapment, grade and surface finish prior to any coating works being carried out. Any priming requirement must also be considered.
Ensure that bituminous felt is firmly adhered or mechanically fixed to the substrate. Bituminous felt should not contain any badly degraded areas. Thoroughly clean by power wash and allow to dry. Treat blisters by star cutting and removing any underlying water. Allow to dry and re-adhere using Decostik® SP. Badly degraded areas should be replaced with Carrier Membrane bonded in Decostik® SP.
Metals must be in sound condition. Steelwork is ideally prepared to Sa2½ (Swedish Standard SIS 05: 5900 = 2nd quality BS4232 = S.S.P.C. grade SP10) OR as indicated by the blasting specification which may be of a higher standard. Where blasting to Sa2½ (Swedish Standard SIS 05: 5900 = 2nd quality BS4232 = S.S.P.C. grade SP10) is not permitted alternative blast media or clean metal preparation by pin hammer, etc. is acceptable. Less effective methods of preparation that leave corrosion in-situ may reduce expected life term.
Non-ferrous metals are prepared as follows. Remove any deposits of dust and oxidation and abrade to bright metal. Wire brushing can be used for soft metal such as lead. The surface must be clean and free from grease which, if present, must be removed with a proprietary solution. Wash with detergent, rinse and dry. Prime with Sikalastic® Metal Primer or Sika® Primer 204N.
Timber and timber based panel roof decks are to be well constructed, in good condition, firmly adhered, and with sufficient fixings for the nature and location of the site. Timber based roof decks require a priming layer of Carrier Membrane. For small areas of exposed timber (i.e. upstands) use Sika Bonding Primer or Quick Cure Primer, (exposed timber should be Marine ply to BS 1088 or equivalent).
Ensure the existing material is sound and firmly adhered. Existing Sikalastic® RoofPro Advanced Systems. The existing Sikalastic® RoofPro Advanced System should still be soundly adhered to the substrate. Timber and timber based panel roof decks require a complete layer of Svap 5000E SA prior to the application of the chosen system. The substrate should then be treated as a felt roof. Small timber protrusions may be treated directly, provided that the timber is of exterior quality, e.g. marine plywood, (see datasheet for further information). Remove loose or degraded coatings returning to a firm, feathered firm edge. Remaining coatings can only be overcoated if soundly adhered. Ensure the surface is clean and free from grease.
Flat Roof Waterproofing Only - 25 year expected durability*
Prior to priming all substrates must be clean dry and sound free from any oxidisation, mould and any other deleterious materials. For further information please contact technical services. Use Sikalastic RoofPro Advanced or Sika Reemat Premium as an embedment layer. For a topcoat, use Sikalastic RoofPro Advanced.
Metal and Asbestos Roof Waterproofing Only – 10 year expected durability*
Prior to priming all substrates must be clean dry and sound free from any oxidisation, mould and any other deleterious materials. For further information please contact technical services. Use Sikalastic RoofPro Advanced as an embedment coat. Next apply a reinforcement coat of Sika Flexistrip, Sika Flexitape or Sika Remmat Premium. For first topcoat, use Sikalastic RoofPro Advanced.
The application of the system must be approached as one operation. Always plan for reasonable progress of each coat. Work only so far in advance that the existing surface can be overcoated as the next operation. Finish the coating system completely before progressing to the next area. The ideal time between coats is within
48 hours. It is not good practice to plan breaks between coats of more than 7 days. For periods longer than this and less than 14 days the surface must be reactivated with Sika Reactivation Primer. Periods between coats longer than 14 days may affect the normal life term of the system –If this happens consult Sika for advice. Ensure each application/coat is clean and dry prior to overcoating. At no stage should the Sika system or waterproof coating in its finished or intermediate stage be used as a workspace or access floor without adequate protection.
Apply Sikalastic® RoofPro Advanced using a roller (short pile mohair roller), brush (soft nylon or bristle brush).
- BBA Agrément Certificate - 18/5540
- External fire performance: BRoof (t4) & classification under BS476 Part 3:2004 EXT.F.AC allowing unrestricted use under the current building regulations. For more information please contact Technical Services.
- One-component moisture-triggered polyurethane
- Resistant to mild acids, alkalis, detergents and some solvents. More details are available on request
- Pot Life: The material in opened containers should be applied immediately as a surface film formation will happen within 1 - 2 hours
- Clean Up: Clean all tools and application equipment with proprietary cleaning solvent immediately after use. Flush/wash equipment with cellulose thinners or xylene.
- Dry Film Thickness: 1.5mm
- Available in RAL 7035 and RAL 7015
- Available in 15 Litres