Disk Brake Pads Continually Glazing Over

CharlieV453

Hi there,
About a week ago I purchased some new brake pads for my rear brakes. The brakes are mid end Shimano and worked great before. However when I put the new pads is they almost instantly glazed over from the brake only being pulled once. I had cleaned it with washing up liquid and warm water as well as methylated spirits but I get the problem both ways. I cleaned the rotor in the same way but when I used the methylated spirits it started to squeal. To counter this I put some disk brake cleaner on and the power lessened but the squealing went away. The brakes do need bleeding which is part of the culprit to the loss of power but the pads continually glazing baffles me.

Am I using the wrong technique to clean my brakes or is it something else?
I am also hesitant to buy a new set of pads as I'm on a tight budget and I don't want them to glaze over instantly.
Any help is much appreciated
Thanks

The Rookie

Messing with brakes is usually a bad idea..... usually they work better left well alone!

Did you degrease the disc before fitting new pads, Iso-propyl alcohol is the stuff to use.

What makes you say they were glazed? (glazing is caused by dragging your brakes instead of using them 'on' or 'off'), they can't glaze over instantly and I wonder if you contaminated the new pads with whatever killed the previous ones perhaps.

Disc brake cleaner is usually a bad idea on bike pads, its usually designed for brakes that get hot enough to burn it off, not mountain bikes.

Washing up liquid isn't a pad cleaner either and leaves all sorts of residues.