Why this one is different near the seafront
A toilet seat fixing kit is usually plastic these days, which sidesteps the corrosion problem entirely on newer bathrooms. The issue is the Royal Harbour and West Cliff terraces still running the original metal bolts fitted decades ago, often plated steel rather than brass or stainless. Same salt-air chloride mechanism that corrodes an outdoor gate hinge works on a bathroom that isn't well ventilated too, just slower - condensation off a bath or shower does a version of the same job that sea spray does outdoors.
What actually goes wrong
The seat itself rarely fails suddenly. What happens is the plastic hinge cracks or the soft-close mechanism gives out, you buy a replacement seat, and then discover the two nuts holding the old one down will not turn. On a newer plastic-bolt seat that is a two-minute swap. On an older metal-bolt fixing, corrosion has usually welded the nut to the thread, and forcing it risks cracking the pan itself, which turns a small job into a full pan replacement.
Getting the seized bolts off without cracking the pan
Penetrating oil, left to work for a proper ten to fifteen minutes rather than thirty seconds, on the visible thread first. Hold the bolt head steady from above with a screwdriver while working the nut underneath rather than twisting against nothing. If it still will not shift, the bolt gets cut rather than forced - a hacksaw blade or a mini cutting disc between the underside of the pan and the nut, done carefully with the pan protected. That is the point where most DIY attempts either succeed or end up with a hairline crack nobody notices until the pan fails months later.
What we fit instead
Any seat we fit on this coast gets stainless or brass fixing bolts, not the plated steel that came as standard with a cheap seat. Costs a few pounds more on the parts, and means the next person replacing this seat in ten years' time isn't fighting the same seized-bolt problem we just solved.
What it costs
Straightforward swap where the old bolts come off cleanly: £45 to £65, most of that the callout, seat itself £15 to £40 depending on quality. Add £15 to £25 if the old bolts are seized and need cutting rather than unscrewing - still a lot cheaper than a cracked pan. Two seats in the same visit, common enough in an older house with more than one bathroom, usually comes in under two separate call-out prices.
Book the job
If this is a fix you'd rather not do yourself, WhatsApp a photo to 07763 100 477 for a fixed-price quote.