Painted or treated as the rest of the window, the bead should last just as long. Certainly if used with the appropriate sealer it would be an improvement on putty, which in my experience, you rightly blame for the rotting of the rails, when water gets between it and the glass both outside and in.
And, increasingly you will find that the bottom bead - the one that really counts - on both doors and windows is a plastic overhanging one with a rubber seal at the back.
S
In short, no. I tried using "putty" sold in sealant gun cartridges. It shrinks, grows mould and is rubbish. It is in fact just acrylic sealant with some added beige colouring. After trying it, I have cleaned it off the window in question and have done the job properly with proper putty which is cheap, easy to work with and produces a superior result.
If you wait a few moments TNP will be around to recommend the use of water-based acrylic sealant.
Actually, no. The smaller the section, the quicker it rots, even if it's glued to a larger section. Not sure why this happens, but it does IME. Also, the beads (particularly the lower one) take the bulk of the punishment, being next to the glass.
Certainly if used with the appropriate sealer it would be an
I've never known an acrylic sealant or filler shrink, and mould will grow anywhere if conditions are right. Ah well, if acrylics are "rubbish" and putty is the "proper" stuff, not much room for discussion then
Agree 100%. Acrylic putty doesn't shrink. Adhesion to glass and the frame is excellent. The one from Wickes is as good as any.
There is no room for intelligent discussion with Steve Firth. :-(
I've known wood shrink after filling because, having eliminated the leaks, it dries out. I suppose the filler might get the blame for that but, as you say, the bond to the glass is good, which indicates that the acrylic is stable.
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