opinions on radweld please

[shropshire lad]

Yesterday , when 100 miles from home in my Chimaera, noticed a small coolant leak and a hissing noise from somewhere near the base of the nearside of the radiator. No great jump in temperature so no damage done. Treated with radweld , filled up with water and got home , watching the guage like a hawk , but no problems .
What now ? Is it imperitive to fix /change the radiator , or is radweld a long term solution ?

[shropshire lad]

Thanks for that - oh well