Average time required to complete repair work.
Roof spread repair.
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.
This will ensure that any repairs or modifications undertaken will not harm the existing structure.
The mathematics of rafter and collar ties web article math encounters blog november 2010 retrieved 2016 04 15 original source.
Roof spread occurs when the downward pressure of the weight of the roof starts pushing against the rafters enough that the structure itself begins to move.
Type of roof repair.
Factors that cause the situation include bad construction improper materials and water and rot problems.
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.
Corbel conservation s robin russell provides an introduction to structural timber repairs in historic buildings.
Roof spread affects a roof that begins to move after it is installed.
The article concludes with a section outlining approaches to the problem of roof spread.
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.
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.
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This is a prolonged process but can cause severe damage to the integrity of a home.
Roof spread can be dangerous for a house and very damaging for a roof.
So fixing the problem as soon as possible is vital.
Either the roof starts moving downwards or the walls start pushing outwards.
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.
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.
The table below shows the typical price of different roof repair jobs.
Gaping cracks and gaps meant the structure needed a complete rebuild.
Replace ten roof tiles on a typical two bedroom terraced house.