The shingled my roof and I wanted ridge vents I checked the gap for the vents and the left 1/4 in to 1/2 in gap for the house and the garage no gap didn't have a clue what they were doing, they left the eaves troughs full of nails and felt, I had to get a magnet and clean up around my house and both my neighbors. A roofing company from Kimberley came today and re done the ridge vents and tidied up their mess, roofers that knew what they were doing.