Conventional roof frame
The conventional roof frame carries the roof load through load bearing walls to the footings. In this case the roof framing struts that support the roof load have been loaded onto the hanging beam. The hanging beam should not carry any loads. Refer AS1684 (Timber framing manual).
The subfloor has a lack of adequate cross ventilation. Cross ventilation keeps the subfloor dry and reduces mould & fungal growth. Timbers are susceptible to decay if moisture is present. Increasing the subfloor ventilation, levelling out the subfloor soil and ensuring all timbers are dry, will increase the service life of the structure.
The minimum clearance for a bearer to the soil is 150mm. Unless you are in a termite prone area; then the minimum clearance is 400mm. There is a lack of cross ventilation, the bearers are resting in the soil, this is conditions conducive to structural failure. A full assessment of the condition of the timbers will have to be carried out from the interior of the dwelling. Costly and time consuming.
The flashing from the wall parapet to the top of the roof covering is inadequately installed. Inadequate installation of flashings result in water penetration to the internal wall lining and living spaces.
The roof covering is possibly asbestos sheeting. There are a few indicators; however, we don’t claim to be asbestos professionals. Any works carried out on this structure would require further assessment from a registered asbestos professional.
The timber rafter is not tied into the ridge board. Usually nails connect the two framing members; however a strap or bracket would also be adequate. Tying the two members together supports the roof framing.
The downpipe is not connected to the existing system. The pooling of water at the footings assists in differential movement – which in turn leads to internal cracking of plasterboard wall and ceiling linings, external cracking and movement of the external cladding (brickwork). Ensure your downpipes are connected to prevent water penetration, mould, movement and cracking.
The poor installation of this window exposes the timber frame to the elements. Water penetration will affect the condition of the timber frame and penetrate through to the internal face of the structure.
The inadequate window installation has allowed water to penetrate the internal side of the structure, now affecting the occupants. Water pooling on the window sill is a very good indication that the windows are not weather proof.