As Locksmiths in Stockport and Manchester we see a lot of ways uPVC doors are bypassed.
The first weakness on a uPVC door is the cylinder which can be:-
- low quality - giving rise to picking and raking
- wrong size - projecting on attack side more than 5mm - giving rise to snapping
- these can be upgraded to enhance the protection of the lock and cylinder
- there should be hookbolts fitted. some old doors are fitted with rollers which can by bypassed quite easily. also check the frame where each hook and roller fits, to ensure they are locking correctly
lastly the infill panels-
these can be badly fitted and externally beaded, and badly fitted we can supply enhanced repacments