It is the transaction of re-negotiating your mortgate with your lender. You can release some extra cash, subject to thgeir agreement, and re-arrange the amount and length of your mortgage loan, and optyion that is becoming more popular.
the benefits of re-mortgating can be quite fruitful ... if when you purchased your home your property was worth �50000 and is now worth �100 000 your re-nogiating a new mortgage for yourself is better in terms of the amount of equity you now have in your property (at least 50% based on these figures), therefore you can get a lower interest mortgage (lower payments per month) or free up this equity (cash in your pocket up to 85% of the value of your property) but do this by seeing a financial advisor they will give you the best options. however i do believe that in a couple of years because alot of people have done the later there may be alot of re possesions if the interest rate goes up.. so do be careful and take advice