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Page seven: Instructions step 4 - 6
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Step four: The roof frame
Cut the roof rafters from 2x4 stock to the dimensions as shown in Plan - Front elevation. There will be 12 altogether, six each side of the roof.
Fix the rafters to the beam. The placement of the rafters is shown in Plan - Looking down view.
Note that there is a double rafter at each end of the roof. This is so the inside top of both front and rear walls can be lined, thus eliminating any high ledges that could be a problem to the chickens.
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Step five: The wall cladding
Fix the 3/4" exterior-type plywood to the frame, making sure that all joins are over a stud.
Make the bottom of the chicken hatchway opening at least 3" above the floor level to stop any litter falling out.
Insert galvanized flashing at the top of the doorway, the chicken hatchway and above the nesting boxes lid.
The flashing should tuck under the plywood cladding by about 2" at the top of each opening and then angle out, also about 2". The flashing is to deflect the rain or any dripping.
Note that the windows will not need any flashing as they are tucked up under the eaves of the roof.
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Before fixing the plywood cladding above the nesting boxes, run a flexible waterproof type of material under the plywood and over the top of the lid. This is to waterproof the hinged area of the lid, yet still allow the lid to be lifted. Even heavy-duty waterproof canvas will do the trick, although the end of the canvas would need to be wrapped around and fixed to a strip of wood or similar that will act as a weight and stop the canvas from blowing up.
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Step six: The roof and the battens
Lay tar paper, heavy breather-type building paper or similar roofing underlay over top of the rafters, ensuring it is taut and waterproof prior to putting on the roofing boards.
Nail the 1x6x8ft roofing boards to the rafters with 3" galvanized flathead nails.
Start at the bottom of the rafter and then work your way up, overlapping each board by at least 1". Nail through both boards where they overlap and ensure the overhang at each end of the chicken coop is equal.
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Apply a galvanized flashing (ridge capping) at the apex of the roof, overlapping at least 4" each side of the roof.
Fix the 1X4 battens over the plywood cladding at each join, each stud, and at the corners and sides of every door and window. Preferably the battens should have a groove each side of the join to stop water being drawn up by capillary action.
Screw the 1X6 litter board to the inside of the studs at each side of the door opening. The litter board is just to stop the litter from falling out. When the chicken coop needs a clean out, the litter board can be removed.
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