If you are looking at your lawn and thinking that you need to returf or seed it then after you have done the preparation work in your garden try to follow these suggestions.
I personally recommend that the ground should be watered BEFORE you sow the seeds or put down the turfs as this will help to ensure plenty of moisture for to aid growth. If sowing seeds try to ensure an even spread across the area. With turfs you lay these out in a staggered fashion ensuring there are as few joins as possible, a little like laying bricks – or as a child Lego bricks.
It good to work from one of the garden to the other. When you have done that start at the opposite end to where you started with a half turf and work back. Repeat this as you go. When you have finished ensure that you keep the ground damp so that the seeds or lawn has the best chance of flourishing.
I know all about this as I, in the last few months, dismantled a very large summer house which housed an above ground swimming pool which was sunk 2 foot into the ground. This summer building had not been used for many years so the decision was taken to remove it and to increase the lawn in the garden. After removing it, which I had bought from 1st Choice Leisure Buildings, I was left with a large hole. About the same time I had a new concrete driveway laid so the old concrete and rubble helped to filled in the hole.
Even so I need a full lorry load of soil to fill in the hole. Moving this by wheel barrow was very hard work, although my grandson Daniel, who was nearly 3 at the time did help me. Frustratingly when I took the last of the top soil through I fond I was about 3 wheel barrow loads short Argghh!! Another bag was ordered and the lawn was laid the following week after a great deal of work compacting the ground, raking and watering.
At the end I will tell you that I was very happy to put the spade, fork and rake back into the garden shed where hopefully they will reside for many years before being needed again.
Why you are about it a good clear up in the garden is a great idea. Any fallen leaves can be deposited in the compost bin near the shed (usually), or maybe behind your summer house, and this will break down into useful compost for the garden. Also try to ensure that moss does not get a foothold in the lawn. However you will find that moss will have a hard time breaking through if you have a good, thick lush lawn. Then enjoy your new lawn.