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| Details for Bat House Plans
 Free Bat House plans - 1. Wider bat houses can be built for larger colonies. Be sure to adjust dimensions for back and front pieces, ceiling furring strip and netting. A 3/4" support spacer may be required in the centre of the roosting chamber for bat houses over 24" wide. 2. Two bat houses can be placed back-to-back, mounted on poles. A horizontal 3/4" slot should be cut in the back of each house about 10" from the bottom edge of the back piece to improve ventilation and permit movement of bats between houses. Four 2 3/4" pieces of wood screwed to the sides will join the two boxes. Bats and air will enter the sides, but not light. Leave a 3/4" space between the two houses, and roughen the wood surface or cover the back of each with plastic netting. Do not cover the vents. A tin roof covering both houses protects them and helps prevent overheating. Eaves should be about 3" in southern areas and about 1 1/2" in the North. 3. Ventilation may not be necessary in colder climates. In this case, the front should be a single piece 23" long. In general, smaller bat houses should not be used in northern areas.
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