Wrimco Waterproofing                              Home  | Specification | Product | Project | Technical data A-Z | Contact us

Adhesive Membrane

Anti-root Membrane

Approved Applicators

Backing Rod

Drainage Cell

Drainage Sheet

Epoxy Adhesive

Epoxy Flooring

Flat Roof Membrane  

Foundation Membrane

Liquid Membrane

Membrane Protection

Product Application

Product Category

Retaining Wall

SBS Sheet Membrane

Torch on Membrane

Under Slab Membrane

Vapour Barriers

Waterproofing Primer

 

Waterproof Balcony Liquid Membrane Waterproof Bathroom liquid membrane Waterproof Retaining Wall Liquid Rubber Membrane How to waterproof a bathroom Waterproof Internal Wet Area Membrane Waterproof Tiled Balcony Clear Penetrating Sealer Trafficable liquid membrane UV Protection Polyurethane Membrane Waterproof Water Feature liquid membrane Hydro Pressure Resistant liquid membrane Waterproof fish pond liquid membrane waterproof bathroom liquid membrane Waterproof above screed liquid membrane UV Resistant Polyurethane Membrane Waterproof leaking balcony liquid membrane waterproof damp basement wall liquid membrane Solutions to common waterproofing problems Maxseal Foundation Polyurethane Membrane MasterSeal M210TIX Latex Rubber Liquid Membrane Waterproof wet basement wall liquid membrane Injection Drill Pump Vulkem 350/345/346 Ardex WPM 300 Epoxy - Stop Rising Damp Waterproof Metal Roof Liquid Membrane Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer, waterproof Leaking Balcony, Flat Roof, Planter Box, Bathroom tradesman, handyman Waterproof Box gutter liquid membrane Waterproof Retaining Wall liquid membrane Waterproof Internal, External Wall Liquid Membrane Waterproof Concrete Slab Liquid Membrane Waterproof Balcony Liquid Membrane Stop Leaking Shower Liquid Membrane How to waterproof a retaining wall How to waterproof a Retaining Wall How to fix leaking fish pond Waterproof Garage Roof Liquid Rubber Membrane Waterproof water tanks for drinkable water Waterproof Leaking Roof, Gutters, Balcony, Car Park tradesman Waterproof leaking box gutters tradesman Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer   Repair Leaking Balcony, Flat Roof, Planter Box, Bathroom Waterproofer   HiBuild Hydrastatic Water based Epoxy Hydrostatic Negative Pressure Water Based Epoxy Under tile screed bed waterproofing membrane Prevent and Fix Rising Damp Waterproofing Epoxy Waterproof exposed balcony liquid membrane Repair leaking balcony waterproof liquid membrane Waterproof Bathroom Liquid Membrane Planter Box Retaining Wall Tanking Liquid Membrane Waterproof Leaking Metal Roof Waterproofer HOw to repair leaking fish pond Waterproof Underground wall Liquid Membrane Waterproof Planter Box liquid membrane Waterproof Watertanks Cementitious Liquid Membrane Waterproof Lift Pit Liquid Membrane ARDEX WPM 001 - Undertile Waterproofing Membrane Waterproof Planter Box Root Resistant Liquid Membrane Repair Bitumen Roof Waterproofing Liquid Membrane UV Protective Polyurethane Membrane Waterproof External Brick Wall liquid membrane Waterproof Retaining Wall Liquid Membrane Waterproof Planter Box Liquid Membrane Waterproof Wet Retaining Wall Liquid Membrane Waterproof Leaking External Wall Licensed Waterproofer Emer Clad Acrylic Liquid Membrane Waterproof Planter Box, Retaining wall liquid membrane Fast Cure Elastomeric Waterproofing Membrane Systems Waterproof Leaking Swimming pool tradesman UV Resistant Acrylic Liquid Membrane How to Waterproof a Leaking Metal Box Gutter Sikalastic 560 - Repair Bitumen membrane Roof Waterproof Lift Pits Tradesmen Waterproof Leaking Kitchen Tradesmen Waterproof Leaking Internal Basement Walls tradesman Waterproof Leaking Laundry tradesman Waterproof Leaking Deck, Verandah Tradesman Waterproof Leaking Roof, Gutters, Balcony, Car Park Tradesman, waterproofer, license waterproofer Repair Bitumen Roof Liquid Rubber Membrane Waterproof Besser Block Wall with Liquid Membrane Waterproof leaking bitumen roof contractors Waterproof leaking bitumen roof contractors  Waterproof Leaking Retaining Wall, Basement Wall Tradesmen Waterproof Leaking Ceiling Waterproofer Repair leaking Water Tank licensed Waterproofer Repair Leaking Fire Water Tank Licensed Contractors  Waterproof Leaking Fire Water Storage Tanks Waterproofer Waterproofing Leaking Basement Licensed Water proofer Waterproof Leaking Plant Room, Machine Room Contractors Sikalastic 488 UV Trafficable Polyurethane Liquid Membrane
Commercial Building Sheet Membrane Concrete Roof Sheet Membrane Waterproof Deck Sheet Membrane Entertainment building Waterproofing Membrane Waterproof Government Building Sheet Membrane Waterproof Hospital Building Sheet Membrane Waterproof Landmark Building Bitumen Membrane Waterproofing Planter Box Sheet Membrane Waterproof Plywood Roof Sheet Membrane Waterproof Residential Building Sheet Membrane Waterproof Roof Bitumen Sheet Membrane Waterproof Flat Roof Sheet Membrane Waterproof Retaining Wall Sheet Membrane Terrace waterproofing Sheet Membrane Waterproof University Building Sheet Membrane Wrimco Reference Waterproof Lift Pit Sheet Membrane Waterproof Concrete Roof Sheet Membrane Tanking Sheet Membrane Systems Vaucluse Waterproofing Project  Mosman Waterproofing Project Waterproofing Palm Beach Waterproofing Dover Height Waterproofing Darling Point Waterproofing Bellevue Hill waterproofing tradesman Knowledge Base FAQ Waterproofing Product Waterproof Leaking Garage Roof tradesman Repair SBS, APP Sheet Membrane Waterproof Concrete Slab Sheet Membrane Waterproof Leaking Garage Roof Liquid Rubber Membrane Waterproof Leaking Metal Roof Liquid Rubber Membrane Waterproof Balustrade Sheet Membrane Waterproof Commercial Building Project Bitumen Sheet Membrane Closed Cell Backing Rod Repair Crack Joints Closed cell backer rod Expansion joint backing rod Backing Rod Waterproof Leaking Roof, Balcony, Box Gutter tradesman Repair Leaking underground basement wall Waterproofer Waterproof Leaking Shower, Bathroom, Wet area Tradesman Repair Leaking Deck, Planter Box Waterproofer Waterproof Leaking Fish Pond Tradesman Waterproof Rising Damp Basement Tradesmen Roofs Waterproofed with Wrimco Sheet Membrane Waterproof Retaining walls with sheet membrane Waterproof Balcony with Sheet Membrane HDPE Self Adhesive Sheet Membrane Waterproof Commercial High Rise Building Roof Contractors Waterproof Car Park Roof with sheet membrane Ardex WPM 116 Sheet Membrane Ardex WPM 150 APP Sheet Membrane ARDEX WPM 188 SBS Garden Tanking Membrane ARDEX WPM 185 APP Sheet Membrane Ardex WPM320 Waterproof Retaining Wall Liquid Membrane Waterproof Deck with torch applied Sheet Membrane ARDEX WPM612 FL TPO Fleece-Backed Roof Membrane TREMproof SBS 4000M Mineral Bituminous Membrane ARDEX WPM 1000 Weldable Waterproofing Membrane SBS Sheet Membrane Installation ARDEX WPM 3000X Self Adhesive Sheet membrane ARDEX WPM 750 Undertile Butynol  Waterproof Concrete Slab with Sheet Membrane ARDEX WPM 444 APP Sheet Membrane How to waterproof a Retaining wall How to waterproof a Planter Box How to waterproof a planter box How to waterproof Tiled Balcony with clear sealer How to waterproof a Shower  Ardex SRO 834 Waterproofing Specification Wrimco Sheet Membrane Waterproof elevator pits Sheet Membrane SBS Sheet Waterproofing Membrane How to waterproof balcony with sheet membrane Anti Root Sheet Membrane Vehicular Traffic Liquid Membrane Waterproof Planter Box with torch applied sheet membrane Waterproof Balconies Decks Podiums Prevent Rising Damp Hydro Static Epoxy How to waterproof a planter box  20 Years Warranty 2 Layers Sheet Membrane System for Exposed Roof 20 Years Warranty Sheet Waterproofing Membrane System

Sikasil WS-305 CN Silicone:   

   

Sikasil WS-305 CN is a neutral-curing silicone sealant with a high movement capability and excellent adhesion to a wide range of substrates.

Sikasil WS-305 CN is manufactured in accordance with ISO 9001 quality assurance system and the responsible care program.

 

Product Benefits

 

Meets requirements of ISO 11600 25 LM F & G, ASTM C 920 (class 50), TT-S00230C, TT-S001543A

Outstanding UV and weathering resistance

Adheres well to many substrates including glass, metals, coated and painted metals, plastics and wood

 

Areas of Application

 

Sikasil WS-305 CN can be used for weatherproofing and sealing applications where durability under severe conditions is required.

Sikasil WS-305 CN is particularly suited as a weather seal for curtain walling and windows.

This product is suitable for professional experienced users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

 

Cure Mechanism

 

Sikasil WS-305 CN cures by reaction with atmospheric moisture. The reaction thus starts at the surface and proceeds to the core of the joint. The curing speed depends on the relative humidity and the temperature (see diagram 1 below). Heating above 50 C to speed up the vulcanization is not advisable as it may lead to bubble formation. At low temperatures the water content of the air is lower and the curing reaction proceeds more slowly.

Diagram 1:Curing speed 1C-Sikasil

 

Application Limits

 

Most Sikasil WS, FS, SG, IG, WT, AS and other engineering silicone sealants manufactured by Sika are compatible with each other.Sikasil WS and FS sealants are compatible with SikaGlaze IG sealants. All other sealants have to be approved by Sika before using them in combination with Sikasil WS-305 CN. Where two or more different reactive sealants are used, allow the first to cure completely before applying the next.

Do not use Sikasil WS-305 CN on pre-stressed polyacrylate and polycarbonate elements as it may cause environmental stress cracking (crazing).

The compatibility of gaskets, backer rods and other accessory materials with Sikasil WS-305 CN must be tested in advance.

Joints deeper than 15 mm should be avoided.

The above information is offered for general guidance only. Advice on specific applications will be given on request.

 

Method of Application

 

Surface preparation

 

Surfaces must be clean, dry and free from oil, grease and dust.

Advice on specific applications and surface pretreatment methods is available from the Technical Service Department.

 

Application

 

After suitable joint and substrate preparation, Sikasil WS-305 CN is gunned into place. Joints must be properly dimensioned as changes are no longer possible after construction. For optimum performance the joint width should be designed according to the movement capability of the sealant based on the actual expected movement. The minimum joint depth is 6 mm and a width / depth ratio of 2:1 must be respected. For backfilling it is recommended to use closed cell, sealant compatible foam backer rods e.g. high resilience polyethylene foam rod. If joints are too shallow for backing material to be employed, we recommend using a polyethylene tape. This acts as a release film (bond breaker), allowing the joint to move and the silicone to stretch freely.

For more information please contact our Technical Department.

 

Tooling and finishing

 

Tooling and finishing must be carried out within the skin time of the adhesive.

When tooling freshly applied Sikasil WS-305 CN press the adhesive to the joint flanks to get a good wetting of the bonding surface.

 

Removal

 

Uncured Sikasil WS-305 CN may be removed from tools and equipment with Sika Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically.

Hands and exposed skin should be washed immediately using Sika Handclean Towel or a suitable industrial hand cleaner and water. Do not use solvents.

 

Overpainting

 

Sikasil WS-305 CN cannot be overpainted.

 

Further Information

 

Copies of the following publications are available on request:

Material Safety Data Sheet

 

Packaging Information

Cartridge

300 ml

Unipack

600 ml

 

Chemical base

1-C silicone

Colour (CQP1 001-1)

300 ml cartridge: Black, Grey, Transparent, White

600 ml sausage: Black

Cure mechanism

Moisture-curing

Cure type

Neutral

Density (uncured) (CQP 006-4) transparent

all other colours

1.03 kg/l approx.

1.49 kg/l approx.

Non-sag properties (CQP 061-4 / ISO 7390)

< 2 mm approx.

Application temperature

5 - 40 C

Skin time2 (CQP 019-2)

35 min. approx.

Tack-free time2 (CQP 019-1)

180 min. approx.

Curing speed (CQP 049-1)

See diagram 1

Shore A-hardness (CQP 023-1/ISO 868)

15 approx.

Tensile strength (CQP 036-1/ISO 37)

1.0 N/mm2 approx.

Elongation at break (CQP 036-1/ISO 37)

900% approx.

Tear propagation resistance (CQP 045-1/ISO 34)

4 N/mm approx.

100% modulus (CQP 036-1/ISO 37)

0.4 N/mm2 approx.

Movement accommodation capability (ASTM C 719)

+/- 50%

Thermal resistance (CQP 513-1)
Short term
4 hours
1 hour

 

180 C approx.

200 C approx.

220 C approx.

Service temperature

-40 to 150 C approx.

Shelf life (storage below 25 C) (CQP 016-1)

12 months

 

1) CQP = Corporate Quality Procedure                2) 23 C (73 F) / 50% r.h.

   

 

Waterproofing FAQ

Membrane Protection Board

Waterproofing Coating

Waterproof Drainage Sheet

Waterproofing Primer

Repair and Maintenance