The secret to preventing curtain wall screws from leaking: Choose the right 316 stainless steel screws, save worry and money!
Why does the curtain wall start to leak after a few years?
Many curtain wall projects are fine when they are just completed, but they start to leak after a few years. In fact, 80% of the leaks start from the screw holes! Ordinary stainless steel screws are prone to rust in humid, seaside or heavily polluted environments. After rusting, the volume expands, causing the sealant to crack, and rainwater will seep in through the screws.
What is the difference between 304 and 316 stainless steel screws?
Many people think that stainless steel screws are the same, but in fact 316 is more corrosion-resistant than 304, especially in places prone to rust such as the seaside and industrial areas:
- 304 stainless steel: No problem for daily use, but at the seaside or in highly polluted cities, it may rust in 3-5 years.
- 316 stainless steel: Added "molybdenum" element, it has stronger rust resistance and can be used for more than 10 years in the same environment.
Why are our 316 stainless steel pan head screws more leak-proof?
- Better material: using real 316 stainless steel (material test report can be provided), more durable than ordinary screws.
- Better sealing: the screw head has a rubber gasket, which can be pressed after installation to prevent water from seeping in from the screw hole.
- More stable installation: special thread design, it will not damage the aluminum when tightening, and it will not loosen after long-term use.
Real case: Why are the engineering parties changing to 316 screws?
Feedback from multiple curtain wall engineering companies we cooperated with:
The projects that used to use 304 screws started to be repaired after 3-5 years, and it cost a lot of money to repair each time.
After changing to 316 screws, there was no leakage problem for 8-10 years, which saved the trouble of later repairs.
How to choose the screws that suit you?
- Ordinary cities (better air): 304 stainless steel screws + sealant.
- Seaside/industrial areas (easy to rust): Be sure to use 316 stainless steel screws with waterproof gaskets.
- Super high-rise/important buildings: It is recommended to use 316 screws + fluorocarbon coating, which is more resistant to UV aging.
Why choose us?
- Factory direct supply: no middlemen, better price, and controllable quality.
- Support customization: various specifications, lengths, and surface treatments (such as plating, coating).
- Fast delivery: Regular specifications are shipped within 72 hours, and urgent orders can be expedited.