SOLAR WATER HEATING - MOUNTING USING A BLOCK

Go into the loft and check where the drill has come through the felt, in this example it has come through next to the frames. Saw off the wood or block that will be used to secure the solar water heater collector to the roof frame.
Get a five millimetre drill bit and drill two holes through the roof frames Put wood glue on the side of the wood and then screw to secure the wood into position