Average time required to complete repair work.
Roof spread repair.
Factors that cause the situation include bad construction improper materials and water and rot problems.
The table below shows the typical price of different roof repair jobs.
The emphasis of the article is on repair and reinforcement options including the use of scarf repairs stainless steel flitch plates and the use of resins.
Behaviour and repair of carpentry connections rotational behaviour of the rafter and tie beam connection in timber roof structures journal of cultural heritage 13 no.
So fixing the problem as soon as possible is vital.
Roof spread occurs when there is a failure to adequately support the main rafters of the roof so as to prevent them spreading further open in a scissor type action.
Roof spread was detected recently in a property where the concrete tiles had pushed the front and back flanks down together with the top flat roof.
Either the roof starts moving downwards or the walls start pushing outwards.
Type of roof repair.
Rotten or beetle infested timbers this is usually due to long term leakage and poor ventilation.
Roof spread the rafters have pushed outwards causing the top of the wall to bulge which means that the rafters may sink and cause the roof to dip in the middle.
Roof spread affects a roof that begins to move after it is installed.
Since the rafters are fixed to timber wall plates sitting on the head of the masonry wall then roof spread pushed out those wall plates in the process pushing out the masonry below.
Replace ten roof tiles on a typical two bedroom terraced house.
This is a prolonged process but can cause severe damage to the integrity of a home.
Gaping cracks and gaps meant the structure needed a complete rebuild.
The mathematics of rafter and collar ties web article math encounters blog november 2010 retrieved 2016 04 15 original source.
The article concludes with a section outlining approaches to the problem of roof spread.
The problem of resisting roof spread is a real one and it is always worth checking how roof spread is resisted when carrying out repairs or modifications to a timber framed structure.
Roof spread can be dangerous for a house and very damaging for a roof.
At the back note the fascia and guttering had the tell tale signs of bowing and being pushed away from the brickwork.
This will ensure that any repairs or modifications undertaken will not harm the existing structure.