Update: I just finished a big storefront job in Springfield using two different sealants.

I used a cheap polyurethane from the local supply house on one side and SikaFlex 2C NS on the other. The cheap stuff started to pull away from the aluminum after three weeks, but the SikaFlex is still perfect. Anyone else have a go-to sealant for commercial work that actually holds up?

3 comments

3 Comments

patricia9051mo agoMost Upvoted

Stick with SikaFlex every time after a similar disaster. Tried a bargain brand on a strip mall fascia last year and it looked like a spiderweb of cracks by month two. The SikaFlex side of that job still looks like I did it yesterday.

thea2711mo ago

Sounds like the bargain brand did its own stress testing for you. That spiderweb pattern is just their special way of saying "reapply soon." Some lessons are just too expensive to learn twice.

lucas55126d ago

Too expensive to learn twice" is the kind of thing people say to justify always buying the expensive stuff. I used that bargain brand on my own shed roof three years ago and it's still totally fine, no spiderwebs. Sometimes a job just has bad prep or weather conditions, and you blame the tube. Not every cheap product is garbage, and not every premium one is magic. You can waste a lot of money always going for the top shelf name.