flowering in the legs of a star break

[BmwJunkie]

I am getting what looks to be flowering in the legs of my starbreaks. Is this the cause of too much heat? If not, what gives?


Thanks, Scott P

[mafsu]

Are you applying heat, or are you referring to an excessively hot windshield?

[repare-brise]

Heat is definate possibility, if you are getting flowering, it means that the resin is getting inbetween the glass and the PVB.

Merci

[StarQuest]

Scott,

Flowering (melting the PVB layer) would generally occur by applying too much heat. Could you describe your heating precedure in more detail?

[BmwJunkie]

When this occurs, the temp is about 88 degrees outside. I use a slight circular motion with a bic lighter on the inside of the shield. Should I not use heat if it is this warm out?

Thanks

[Delta Kits]

Scott,

If it's that warm out, heat is definitely not needed...Optimum temperature is 70-90 degrees, so your shield is probably slightly cooler than 88 if out of the sun, but significantly higher if in the sun. Either way, at 88 I wouldn't recommend heating.

[mafsu]

I wouldn't recommend heating unless it is to bring the windshield up to optimal temperature. Why take the risk of cracking out the glass when you can get as good or better results without heating during a repair. Instead of a flame you need to use more patience in your repair. I have said in the past that I only use heat during the repair process as a last resort. That has changed, I haven't used heat on resin in over three years. It's just not necessary. Enough of the lecture, to answer your question I would say yes the heat is definitely the problem.

[maxryde]

Hey Scott,

What kind of glass are you working on? Is it old? The thing may be delaminating due to age. Couple that with too much thumb pressure on the bridge and flowering can occur. Are you talking about a practice piece of flat glass? If the glass is not a old shield, some flat glass is not a tough to daisy out if it is thinner lami, I found it to delaminate more easily than say a stock automotive shield. You didn't say how long of heat application you applied also as everyone has said to much heat is going to have the same result. Scott M.

[GlassStarz]

If its 88 degrees and the car is in the sun the glass is warmer than that why would you use heat?Let your injector do its job and quit trying to speed the process. if anything when its warm you should be cooling it down a little to open the legs not adding more heat.????

[BmwJunkie]

Sorry guys! It is a practice piece of glass. I tried it without heat and same results. Scott M, I think your right, I am applying too much thumb pressure. How do I tell besides the flowering if the shield is delaminated? It does have a lot of long cracks on it.

Thanks, Scott P