To sow or not to sow

First posting from a newbie, so apologies if these are daft questions. If I sow grass seed now, how long before it can be walked on? Landlord is wanting to replace the garden's fencing in around six weeks time, and I'm worried a newly growing lawn won't cope with the workman trampling all over it. Would it be better to put either or both of the jobs off until the Autumn? The area is currently bare earth, that I'm trying to clear of weeds and improve the condition of - what would be best for that? It seems to contain occasional clayey lumps at one end, and masses of builders rubble at the other! My friend says the weed is ground elder and will be very hard to get rid of! Am doing all this on a budget - so money-saving approaches to these problems would be much appreciated. TIA, Jackcat

 

Well I'm a total novice so take others' advice as well but I've reseeded several patches in my lawn. One I did about a year ago and I only really feel confident walking on it now. Another I sowed at the end of last summer and it's still really soft and the new grass seems 'delicate' so I still walk around it.

I live next to a cricket pitch and they dig up and reseed the main wicket area the minute the last season's game is over (usually late Sept / early Oct) and I don't see them touch it again 'till Easter.

I guess there are loads of other factors but for the bits I've reseeded it's taken much more seed and time than the packet states.