1-component neutral cure roof and gutter silicone sealant
SikaSeal® Roof & Gutter is a one-component, neutral curing, low odour silicone sealant with excellent adhesion to most construction surfaces. SikaSeal® Roof & Gutter cures through the absorption of atmospheric moisture to give a tough but flexible waterproof seal.
BENEFITS
Neutral cure
Excellent adhesion to most common construction materials such as: glass, enamel, ceramics, tiles, most metal* (see Important Considerations), most plastic, rubber, concrete and grouts
Non-sag
Great tooling characteristics
Interior and exterior usage
High temperature resistance (-40°c to +150°c)
Minimum movement capability ±25%
MATERIAL APPLICATION
Roofs
Gutters
Polycarbonate roof sheeting
Around plumbing fixtures and penetrations
General interior & exterior sealing around the home
CERTIFICATIONS
AS/NZS 4020:2018 - Water Potable Approved
TECHNICAL
Shore A hardness
Translucent ~26
Colours ~46
Movement capability
Translucent ±25%
Colours ±50%
Service temperature
-40°C to +150°C
Curing rate
~3-4 mm per 24 hours (+23°C / 50% r.h.)
PREPERATION
"The substrate must be clean, dry, sound and free from oils, grease, dust, cement laitance and loose or friable particles. For optimum adhesion, joint durability and critical, high performance applications such as joints on multi-storey buildings, highly stressed joints, extreme weather exposure or water immersion/exposure. The following priming and/or pre-treatment procedures must be followed: "
Non-porous substrates : Float glass, coated glass, anodised aluminium and stainless steel must be pre-treated using Sika® Aktivat-or-205 or Sika® Aktivator-100. Powder coated and PVDF coated metals must be pre-treated using Sika® Aktivator-205. For more details such as application and flash-off times, refer to the most recent Product Data Sheet of the respective pre-treatment product.
APPLICATION
Sikaflex®-291 can be processed between 5 °C and 40 °C but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and sealant is between 15 °C and 25 °C.Sikaflex®-291 can be processed with hand, pneumatic or electric driven piston guns as well as pump equipment. For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically. For cleaning skin, use Sika® Cleaning Wipes-100.
