On the house, measure and mark the height you want the bottom of your roof to be at. Then, using a level, mark across to your posts. Measure down the post about 100mm to every metre away from the house to allow for fall (water runoff).
Step 3
On the outside of posts, measure and mark the points at which to attach the front beam. It should sit flush with the top of the posts.
Step 4
Cut indents in the outside of the posts for the front beam to sit on.
Step 5
Measure and cut your roof framing to fit the area you want between the house and posts, then nail the frame together using 100mm nails.
Step 6
Cut the polycarbonate sheet with a pair of scissors or fine saw, allowing about 100mm overhang.
Overlap the next sheet by two corrugates. To allow for sheet expansion, pre-drill 10mm holes on every second to third crest - the holes shouldn't be closer than 40mm to the edge of the sheet.
I fixed down the roofing while the frame was still on the ground because the roof was small and light to lift. If it's a big roof get somebody to help you lift it, or attach the roofing material to the framing once the framing is in place.
Step 7
Fix flashing to the edge of the house where the roof will attach to.
Lift the roof into place under flashing with the front beam sitting on the indented posts.
Nail the back frame to the level mark on the house, then nail the front to the notched out posts (for added strength you can use bolts).
You now have a sheltered and usable area that looks great, and will keep your shoes dry.
Materials
100x50mm dressed gauge H3 treated pine (framing for front, middle and back, and two angled ends)
100x100mm posts dressed H5 treated, x2
Quick-setting concrete, x2 bags
100mm galvanised jolt head nails, x1 bag
100mm concrete nails if fixing to block/concrete house
Flashing to fit under weatherboard
Sheet of polycarbonate and roofing screws
Tools
Spade
Sharp hand saw
Screw gun, 10mm drill bit
Level
Tape measure
Hammer
Bevel, square
