As you come out of the Airport there's a big roundabout. Go straight across it. The next roundabout should be the M1 junction. Go left to get onto the Northbound M1.
Take the 2nd Balbriggan exit, sign-posted Naul & Balbriggan. Up the slip and right at the first mini-roundabout, straight across the next mini-roundabout. You should be on a windy country road. Follow this until the first traffic lights where you go left. Follow the road to the roundabout at the end and go left (you should see the signs for all the new housing estates to your left on the roundabout). Moylaragh is the housing estate ahead to the left. Go straight on at the next roundabout so you have the big common on the right and Moylaragh on the left. Take the 3rd left. Follow the road to the end and turn left onto Moylaragh Rise. My house is on the left.