This is hubby - decided to do it myself, took 2 hours to do front seal and I am now planning to do the back seal, very simple job, 10 seconds to pull out the old seal (it was perished and came out in several chunks), approx 1 hour to get off as much of the old sealant as practical (used washing up liquid, and SOFT sponge on lolly pop stick), then about 15 to 20 mins to fit new seal. We had lots of heavy rain a few days later - NO LEAKS. Biggest problem was getting the right sealant, the most recommended product was RTV silicon, the most recommended brand was a 3m product not sold in the UK, after research on the internet I decided to use Loctite superflex (Black). Halfords show it on their website but it is a non stock item that they would order at £4.00 per 40ml tube (I estimated I would need 100ml) due to delivery costs and times I ordered the minimum qty of 12 from BRAMMER in Stratford cost £52.90 including delivery and it turned up 5 days later. I used 3 tubes (120ml) mainly due to not being able to get the last 10ml out of a tube with any precision. I have worked in IT for 25 years but was once an electrician. A mechanic that knew me as an IT person once quoted £400 to fix the air con on my car, I decided to do it myself - it was a fuse - cost 30p. I no longer listen to "It's a specialist job", "It will cost ya" and "Don't try this at home". If your thinking of replacing your seals and want some advice I'd be happy to help
