sick lawn

I just moved in with my girl friend- her house has a ratty lawn. The problem is that this area in central Massachusetts was a glacial outwash plain- so the soil was pure sand at the end of the ice age. There probably wasn't much top soil when this neighborhood was built and much of what was here was pushed around during construction.
The lawn has many almost bare spots- and other spots with nothing but weeds.
I don't know if it's best to first attempt to enrich the soil with fertilizer with the theory that richer soil will enhance the ability of grass to compete with weeds- or fist attempt to establish more grass by vigorously raking with an iron rake, then spreading seed, then frequent watering- then after the new grass gets started- to fertilize it. With this alternative, do I need to go light with the fertilizer or get a special type?
Any suggestions?
Joe
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Wait until fall, kill it off, top soil and seed, straw, and a bit of water.
Rock on.
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Steveo said:

Sand base? Bent grass and a cup cutter. <G>
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snipped-for-privacy@hotmail.com wrote:

Yeah that works too especially with the nineteenth hole on your patio. :)
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The key question is how bad is the existing soil. If decent topsoil is non-existent, I'd suffer through this season, then start over by killing everything with Roundup and either tilling in organic matter to improve the soil, or adding screened topsoil if necessary. In any case, what you're talking about is a major renovation and if you're just planning, it's too late now. Wait till last week in Aug/early Sept when you'll have much better results You could use some weed/ feed fertilizer now to make what you have somewhat better.
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