Building a storage shed

STEP 4: The ledger plateIn this example the ledger plate is bolted to the fascia board just below the spouting.Sometimes this is not possible due to lack of free fascia board or fixing area below the spouting in which case the ledger plate will have to be fixed to the house wall beneath the eaves.

SCENARIO (1) FIXING TO THE FASCIA BOARDMark a level line just below the spouting. Use a spirit level or a water level .Fix the ledger plate to the level line on the fascia board using coach screw at least every 1200mm (48″) apart, penetrating through the fascia board and into solid timber, usually the end of a roof rafter or eaves sprocket.

SCENARIO (2) FIXING TO THE HOUSE WALL.Mark a level line just below the eaves. Use a spirit level or a water level . Fix the ledger plate to the level line with coach screws penetrating through the cladding and into the studs (house frame uprights) or lintels (beams above windows and doors).Seal around coach screws with weatherproof silicone sealant.

If the wall is masonry (concrete, brick, block) fix the ledger plate to the wall using masonry anchors every 1200mm.Before fixing, place DPC (Damp Proof Course) between the ledger plate and the wall.

STEP 5: Rafters, purlins, fascia and braceCut the rafters to length and angle cut each end to suit. Work out the rafter length to suit the roof sheets if possible (so as the roof sheets wont need cutting). In this example cut the rafters 2280mm (91 1/4″) long for 2400 (96″) roof sheets. Thus ledger 50mm (2″) + rafter 2280mm (91 1/4″)+ fascia 20mm (3/4″) + roof overhang 50mm (2″) = 2400mm (96″)Refer to the plansfor reference if necessary.

Fix the rafters @ 750crs (30″ O.C.) that is, spaced every 750mm (30″) apart, to the ledger with joist hangers and to the beam with skew nails (nails angled in, toe nailed) and angle clips or Z nails.Ensure the rafters are square, at right angles to the building.

Fix four rows of 100×50 (2×4) nogs on edge in-between the rafters as inthe flat planThese are the nogs (purlins) that the roofing is fixed to.Fix the top row of nogs (purlins) 100mm (4″) down from the top of the rafters and fix the bottom row of nogs (purlins) 100mm (4″) up from the end of the rafters. Fix the other two rows of nogs (purlins) equal distance apart.

Alternatively the purlins can be fixed on top of the rafters if there is enough roombetween the top of the rafters and the eaves.

Fix fascia board along the end of the rafters and also up the sides of the two end rafters (barge board).

Brace on top of the frame diagonally from corner to corner with metal strap brace. see flat plan

Continue – The Roof

How to build a Lean-to Pergola back to start

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