hi there,
i agree, the whole job requires a number of differing trades, fascia fitters, corgi engineer, blast cleaning to mention a few. and therefore you have to make a calculation based on the cost of bringing in all the required services against doing all the work yourselves.
We have a number of larger projects on the go at the moment, and this are in kent, manchester, and stoke, not to mention our normal contract work, therofre mamanganent of all of these is sometimes better than getting my hands dirty all the time.
regards
martin
ps. carpet cleaning for us, is a nice little earner.