Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct
Measure and mark out your plank; leave the front till last, so you can hold the saw at about 30 degrees from the vertical when cutting to ensure the lid fits snuggly. Cut out the individual pieces and sand the edges.
Use the saw to cut shallow, horizontal grooves in the back section of timber to form a 'bat ladder'. Grooves can also be cut on the inside surfaces of the whole box for the bats to cling onto.
Bats don’t like draughts, so make sure all joints are secure.
Cut a wedge out of the back section, around 60cmm down from the top edge. This will locate the lid in position. Handle the saw with care, holding the plank firmly and cut away from yourself.
Assemble the box; pre-drilling holes for the screws to prevent the wood splitting. Drill holes at the top and bottom of the back panel to attach the box to its support. Attach the 'holder' to the underside of the roof and slot in place.
For extra weather protection, attach a piece of roof flashing to the top.