Sikalastic RoofPro Advanced is a single component high performance waterproof coating system that cures to form a seamless, durable and weather- resistant waterproofing solution.

Uses include:

Water-proofing of flat and pitched roof structures, communal walkways, podium decks and terrace roofs.

For new construction and refurbishment projects.

Applicable to existing concrete, roofing felt, brickwork, asbestos cement decks (subject to condition and priming requirements).

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• Features & Benefits
• Tests
• Technical Data
• System Information
• Application Details
• Substrate Preparation
• Substrate Priming
• Application Conditions / Limitations & Instructions
• Curing Details
• Typical Test Data - System
• Notes on Application / Limitations

Features & Benefits

• Single component, ready to use
• 20 year life expectancy
• 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)

Tests

• 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.

Technical Data

System Information

Minimum Coverage Rates

Flat Roof Waterproofing Only - 25 year expected durability*

*Expected durability is defined within the associated BBA Agrément certificate and is not a guarantee period

Metal and Asbestos Roof Waterproofing Only – 10 year expected durability*

*Expected durability is defined within the associated BBA Agrément certificate and is not a guarantee period

Please note: Sikalastic RoofPro Advanced can be used for various applications. Not all substrates would be suitable for all types of project. eg bitumen felt, paints, metals, etc, whilst acceptable for general roofing are unlikely to be suitable for applications with higher levels of access or foot traffic. Please consult Rawlins/Sika Technical Services for more information.

For ALL Systems

Note: 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.

*Please note: the above rates are for smooth substrates only.

Application Details

Substrate Quality

Cementitious substrates

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.

Brick and stone

Bricks, blocks and mortar joints must be sound and preferably flush pointed.

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

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

Bituminous felt

Ensure that bituminous felt is firmly adhered or mechanically fixed to the substrate. Bituminous felt should not contain any badly degraded areas.

Metals

Metals must be in sound condition

Timber substrates

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

Paints/Coatings

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.

Substrate Preparation

Cementitious substrates

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

Brick and stone

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.

Asphalt

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

Bituminous felt

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.

Single ply

Various types of single ply sheeting can be coated. For further information please consult Sika Technical Services team.

Bituminous coatings

Remove loose, degraded, tacky or mobile coatings. Apply the Sikalastic RoofPro Advanced System directly.

Metals

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

Timber substrates

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 Substrate Priming for further information).

Paints/Coatings

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.

Existing Sikalastic® RoofPro Advanced Systems

Clean the membrane using a water jet at approximately 14N/mm² (2000 p.s.i) using detergent and rinse thoroughly. Thoroughly clean by power wash and allow to dry.

Note: For the Waiting Time/Overcoating please refer to the technical datasheet of the appropriate cleaner/primer. Other substrates must be tested for their compatibility. If in doubt, apply a test area first.

Substrate Priming

Note: For the Waiting Time / Overcoating you should refer to the technical datasheet of the appropriate cleaner. Other substrates must be tested for their compatibility. If in doubt, apply a test area first.

Application Conditions / Limitations & Instructions

Curing Details

Applied Product ready for use

Note: Times are approximate and will be affected by changing ambient conditions.

Return-to-service times are provided as a guide only and may vary as a result of conditions. Newly installed balconies should be protected from exposure to heavy traffic by overlaying with an appropriate protective covering. This is particularly critical where early access is needed by other construction related traffic. Rawlins/Sika Ltd. will not be held responsible for damage to balcony surfaces that results from failures to adequately protect newly laid areas.

For further advice, consult Rawlins Technical or your local Sika Technical Manager

Typical Test Data - System

Notes on Application / Limitations

Do not use Sikalastic RoofPro Advanced for indoor applications.

Substrate preparation is crucial to ensure durability. Please follow the instructions in the technical datasheet of the corresponding Primer and pre-treatment.

Applications of Sikalastic RoofPro Advanced in confined spaces must be undertaken in accordance with material safety datasheet recommendations.

Do not apply close to the air intake vents of running air conditioning units until either switched off or isolated as vapour may be drawn into the building.

All areas requiring anticorrosive protection must be installed over an appropriate metal primer that has been applied directly to bright metal.

All joints; areas subject to differential movement; guttering and drainage channels; and repairs; must be treated with local reinforcement.

Adhesion suitability must be verified practically on site prior to commencing contract. Refer to Rawlins/Sika recommendations and the Technical Data Sheet for installation guidance.

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