Window Adhesive: Reliable Sealing and Fixing Solutions for Long-Lasting Installations
Windows are essential for ventilation, natural light, and thermal control, but they also represent one of the most vulnerable points in any building envelope. Whether in homes, commercial buildings, or industrial units, the correct window adhesive and sealant is critical to ensure long-term weatherproofing, flexibility, and structural bonding.
Unlike generic construction adhesives, window sealants require a unique set of performance characteristics: strong adhesion to different substrates (glass, concrete, wood, metal), weather and UV resistance, and flexibility to accommodate structural movement without cracking.
Redwop’s window adhesive solutions—Redoseal 600 and Redoseal WS 100—are specifically engineered to meet these needs in both interior and exterior window applications.
Why Choose a Specialized Window Adhesive?
Installing or sealing windows involves more than simply filling a gap. Consider the challenges:
- Movement: Building materials expand and contract due to temperature and humidity.
- Water Ingress: Poorly sealed joints allow moisture to seep in, causing frame damage and mold growth.
- Air Leakage: Improper sealing leads to heat loss and compromised insulation.
- Aesthetic Durability: Visible cracks or yellowing around the frame affect visual appeal.
Choosing a high-performance adhesive ensures:
- Air-tight and water-tight seals
- Excellent flexibility and elongation
- Durability under UV, moisture, and temperature variations
- Strong adhesion to glass, metal, masonry, PVC, and painted surfaces
Redwop Window Adhesive Products
Redwop offers two specialized sealants for window applications:
Redoseal 600 – One-Component Silicon based Window Sealant
Redoseal 600 is a high-performance, moisture-curing one-component Silicon based sealant designed for high-elongation applications. It is ideal for external window frame sealing, particularly in areas subject to dynamic movement, rain, wind, and UV exposure.
Applications:
- External window perimeter joints
- Aluminium and uPVC window frames
- Joint sealing between facade panels and windows
- Concrete-to-metal sealing in window surrounds
Technical Specifications:
Property | Value |
Base | Silicone, 1K moisture-curing |
Movement Accommodation | ±25% |
Skin Formation Time | 5 – 10 minutes |
Curing Tested at | 55 ± 5% RH |
Application Temp. | +5°C to +35°C |
Elongation | ≥ 350 % |
Adhesion | Excellent on glass, aluminum, concrete, brick |
Packaging | 600 ml foil pack |
Shelf Life | 9 months (unopened, dry storage) |
Key Benefits:
- Excellent resistance to weathering and UV
- High elasticity for dynamic joints
- Non-sagging: suitable for vertical applications
- Paintable after curing
- Primer-less adhesion on most surfaces
Redoseal WS 100 – Acrylic Silicon based Sealant
Redoseal WS 100 is an easy-to-use, paintable Silicon based window sealant suitable for internal window joints and trim finishing.
Applications:
- Interior joints around wood, PVC, or aluminum windows
- Filling internal frame gaps or cracks
- Non-movement sealing in dry zones
Technical Specifications:
Property | Value |
Base | Silicone |
Density | 1.36 ± 0.02 (g/ml) |
Skin Formation Time | ~10–30 minutes |
Elongation | >450 % |
Maximum Allowed Distortion | ± 25% |
Shrinkage | Minimal |
Application Temp. | -30°C to 220°C |
Storage | Store in dry, cool place |
Shelf Life | 12 months in original packaging |
Key Benefits:
- Smooth finish; ideal for visible joints
- Low shrinkage and crack resistance
- Easy water clean-up
- Non-toxic and low VOC for indoor use
How to Choose Between Redoseal 600 and WS 100
Criteria | Redoseal 600 | Redoseal WS 100 |
Application Area | Exterior (windows, facades) | Interior (joints, trims) |
Surface Compatibility | Glass, concrete, aluminum, wood | Plaster, wood, painted surfaces |
Resistance | UV, water, temperature | Interior moisture |
Skin Formation time | 5 – 10 minutes | 10 – 30 min |
Elongation | ≥ 350 % | >450 % |
Application Guidelines
- Surface Preparation
Clean all joints, removing all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds and protective coatings. - Masking
Use masking tape along joint edges to ensure a clean finish.
- Application
Install backing material or joint filler, setting blocks, spacer shims and tapes. Mask areas adjacent to joints to ensure neat sealant lines.Primer is generally not required on non- porous surfaces, but maybe necessary for optimal sealant of certain porous surfaces. A test placement is always recommended. Apply REDOSEAL Sealant in a continuous operation using a positive pressure Before a skin forms, tool the sealant with light pressure to spread the sealant against backing material and the joint surfaces. Remove masking tape as soon as the bead is tooled. - Curing
- Oxime silicon (Redoseal 600): Skin in 1 hr; full cure in 7 days
- Silicone (WS 100): Paint after 24 hours
- Finishing
Remove masking tape immediately after tooling. Protect joints from rain until fully cured.
FAQs About Window Adhesive
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1. Which sealant is best for window gaps?
For external window frames and perimeter sealing, use Redoseal 600 due to its flexibility and waterproof properties. For internal gaps or trim joints, Redoseal WS 100 is suitable.
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2. Is Redoseal 600 suitable for wet weather or exterior use?
Yes. Redoseal 600 is UV- and water-resistant, making it ideal for outdoor applications like windows, façades, and exposed panels.
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3. Can I paint over the window sealant?
Yes. Redoseal WS 100 can be painted after 24 hours. Redoseal 600 is also paintable after full cure.
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4. What surfaces can Redoseal 600 be used on?
It adheres well to glass, concrete, brick, aluminum, wood, and uPVC without primer in most cases.
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5. Do I need a primer before applying Redoseal sealants?
For porous or very dry surfaces, you can use primer to improve adhesion.
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6. How long do these sealants last?
When applied correctly, both sealants have a service life of over 10 years, depending on environmental conditions and substrate movement.