High Quality SV-888 Weatherproof Silicone Sealant to Sudan Factory
Short Description:
Description SV-888 silicone weatherproof sealant is one component, neutral cure silicone sealant, designed for glass curtain wall, aluminum curtain wall and building exterior design, has excellent weathering properties, it can form durable and most building materials, waterproof and flexible interface. Key Features 1. 100% silicone 2. Medium modulus (25% movement capability) 3. UV resistance & weatherproof 4. Primerless adhesion to most building materials Basic Application 1.All ...
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Description
SV-888 silicone weatherproof sealant is one component, neutral cure silicone sealant, designed for glass curtain wall, aluminum curtain wall and building exterior design, has excellent weathering properties, it can form durable and most building materials, waterproof and flexible interface.
Key Features
1. 100% silicone
2. Medium modulus (25% movement capability)
3. UV resistance & weatherproof
4. Primerless adhesion to most building materials
Basic Application
1.All kinds of glass curtain wall weatherproof seal
2.For metal (aluminum) curtain wall, enamel curtain wall weatherproof seal
3.Joint sealing of concrete and metal
4.Roof joint seal
Technical data sheet
| Test standard | Test project | Unit | value |
| Before curing——25℃，50%R.H. | |||
| GB13477 | Flow, sagging or vertical flow | mm | 0 |
| GB13477 | Operating time | min | 10 |
| GB13477 | surface drying time（25℃，50%R.H.） | min | 20 |
| Deep curing | mm/day | 1-2 | |
| Sealant curing speed and operating time will have different with different temperatures and temperature, high temperature and high humidity can make sealant curing speed faster, rather low temperature and low humidity are slower.21 days after curing——25℃，50%R.H. | |||
| GB13477 | Durometer Hardness | Shore A | 28 |
| GB13477 | The ultimate tensile strength | Mpa | 0.65 |
| Temperature stability | ℃ | -50~+150 | |
| GB13477 | Movement capability | % | 25 |
Certification
GB/T 22083-G-35；ASTM C920
Color
Black, white, grey
Package
300ml in cartridge * 24 per box, 590ml in sausage *20 per box
Shelf life
12 months
Note
If you want the TDS or MSDS or other details, please contact with our sales person.
Some concrete patches do not provide flexing, and cement caulk can shrink. For deep cracks, stuffing in fillers – sand, stone, backer rod, dry foam tubes – then covering with a sealant will not stop the materials from moving because the sand underneath settles breaking the sealant water seal.
Silicone caulk will loosen as the cement absorbs water along the repair, in time the caulk will lose its bond and start peeling. And hydraulic cement has a weak bond with concrete.
An elastic epoxy may work.
Advantages of urethanes:
1. Polyurethane is flexible to deal with temperature change and seasonal movement
2. It expands to completely fill the crack, even large ones
3. It dries fast, so a second coat can be applied after a couple of hours
4. The foam forms a strong bond to the cement – in does not leak away
5. DIY homeowners find it easy to use
6. The cracks do not need structural strength
Lots more helpful info on lead roof flashings here :
https://www.fixmyroof.co.uk/install-roof-flashings/step-flashing
This video shows the basic steps in making and fitting lead soakers. Lead soakers installed underneath slates or double lapping plain tiles to create water proofing where a roof abuts a wall or chimney.
After you have installed your lead soakers you may need this video on how to make simple step flashings to cover the upstand of your lead soakers…
If you want to buy some good quality low cost lead bossing tools they can be found via the affiliate links available on my website here : https://www.fixmyroof.co.uk/tools-and-misc/
