Build an insulated A-Frame doghouse for under $75

Step 2 Assemble wood parts and paint

Draw lines at 3" and 4 1/2" from one small end of a 3'x4' roof section. This will be the attachment point for the back wall. Turn the side over and repeat this marking on the other side. Draw lines at 9" and 10 1/2" from the other small end of the 3'x4' side. This will be the attachment point for the front wall. Turn the side over and repeat this on the other side. Mark the other roof section exactly as indicated above. Line up the base of the front and back walls with the marked lines of each roof section. Note that the top inside edges of the roof sections should just touch each other. Screw or nail the sides to the bottom with the 2 1/2" fasteners. Attach the ridge piece to the tops of the left and right roof sections with the 1 1/2" and/or 2 1/2" fasteners. Line the door opening with 1 1/2" wide scrap pieces. Fasten the triangle vent covers on each end backed up by the scrap from the ridge piece using the 1 1/2" fasteners. Paint front and back walls and undersides of roof sections that will be exposed to the weather with 2 coats exterior paint.