S/S Permatex® - Window Defogger Repair Kit - Quality Repair in Minutes - 2.8ml #09117

I was a bit dubious about this, but it was worth gambling £30, as a new rear screen is nearly £300! The instructions were very clear, and the repair process was simple. 24 hours later, I had a working heated rear screen. Probably won't work in every case, as some of the pad needs to have survived on the window.

I bought this as the 2nd hand dealer I got my car from decided that a scraper is an appropriate method of removing the old dealers rear windows sticker (thanks lads!) - Used it to repaint approx. 2 metres of line (2 long sections and a few little bits here and there) and it performed well. The painbrush and template are garbage, but a bit of micropore tape and a poundshop paintbrush and I was done. Follow the instructions, it works well. Try to rush, it'll go wrong. It seems to be better for smaller repairs than for long bits, but it's well worth it :)

I repaired 5 broken elements on the back window - these elements are very fine. The breaks were up to a 15cm in places; seems that the previous owners had something in the back that scrapped off the elements.I did what one of the other reviews did and used painters (Green) tape to give me the lines I needed. Make sure that the window and the element silk screen backing are clean - I used an IPA solution. Put on one coat and let it dry for a minute and then re apply until the line is opaque. I didn't use the brush that came with it but a very fine watercolor paint brush. Before it totally dries lift off the tape - peeling away from the new element. I then touched up any places that I thought need it. I then allowed it so thoroughly dry for a week and then tested it with multi meter for continuity - all was good. The acid test - did it work. Yes it did! We've had a couple of frosty mornings and the repaired elements did their job ok. Very pleased.

Had this product sitting around for a few weeks before I tried it. One of the lines of my rear defogger had stopped working and it was visible where it had burnt out and separated. I applied this product on as the instructions said but the liquid was not very viscous, no matter how many layers I put on. I must have applied about 10 layers, waiting between each layer so it could dry, but it never got opaque and never made a solid line. In the end, I gave up hoped for the best, leaving it to dry for a day. Tried to defog the back window after it had dried and it hadn’t worked.Also, the liquid comes in a bag which is super hard to rip open with your hands, leaving the bag stretched and difficult to pour/ dip the brush into which was a bit of a headache. If it had been a bottle to dip into, it would have been much easier.Not sure if I just got a rubbish one or if they’re all like it, but mine did nothing but leave an annoying mess on my window which I’ll now have to see if I can scrape off without damaging my rear defogger even more.

This product worked for me, I bought it to repair 4 defogger grid lines which had been damaged and no longer worked. Instead of using the stencil to repaint the lines I used some blue painters masking tape. The instructions say to remove the stencil within 30 minutes, but the first time I did this it also pulled off the lines I had painted (as some others had said). The trick is to remove the stencil almost immediately after you have applied the paint, whilst it is wet it will stay on the window. Then let it dry and repeat the process when you apply the second coat of paint.

Unlike some other products of this type, the defogger paint at least conducts electricity, but that's about the only positive. I paid £30 for this and the price has gone up again. Unfortunately, if you paint the lines on using masking tape, the paint comes off with the masking tape once dry.I also had to pay almost £5 postage to return it - all other Amaxon returns are free - £5 is too much to pay to return something that doesn't work.

I had no use for the majority of the kit which was devoted to repairing tabs, as opposed to grid lines. I only needed to repair grid lines and the conductive paint for that purpose worked fine for me. It would be nice if it were available separately and I would rate it 5 star if it was. But it's not so its only a 3 - and how common are broken tabs anyway? .

Very helpful to have this repair kit if a few heating elements are brocken. If your electrically minded and you know how to find + repair the elements this is for you.The only small critisism i have is the electrical paint is in a tiny touch-up jar, could have done with more for what i needed, you need to have a few coats for it to work well