Problems with wet rot and woodworm
Building Surveyor's Expert Advice
1stAssociated.co.uk have Building Surveyors who can provide building surveys, structural surveys, independent valuations, property surveys, structural reports, engineers reports, specific defects report or any other property matters.
Our Surveyors use survey sketches and photos in our reports to emphasise our findings, as the feedback we have from our clients is that the sketches and photos help them understand the reports.
We, of course, like to meet you at the property during the survey and we are more than happy to talk to you about the reports. Please free phone 0800 298 5424 for a friendly chat with one of our surveyors.
The roof structure or framework must be built in a manner which is able to give adequate strength to carry its own weight together with that of the roof covering and any superimposed loads such as snow, wind, foot traffic etc. During our surveys we come across many different types of roof structures.
We don't come across many Crucks timber frame buildings however we do come across quite a lot of timber frame buildings that have peg fixings.
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This is the area where problems occur and dampness gets into the structure.
The reason we put them in this section is that Mansard roofs are often added to Georgian properties where utilising the roof space and effectively giving a free extra storey to your building.
It is true to say that all roofs up to this era had been hand cut and many, many Victorian roofs look like the hand cut sketch or the A frame sketch. On larger roofs the Victorians did use different methods which we won't go into here.
Horizontal timbers which help give support to the common rafters which form the pitch of the roof.
Timbers which form the pitch of the roof.
Hand Cut Roof
War Years and Post War Years
Whilst these also did occur in earlier eras a hipped roof is very much in our mind something that is post war.
The problem with the design of the hipped roof is that the roof sits on itself rather than onto a wall. Due to the construction of hipped roofs, they are prone to slipping or to dropping which can, in extreme cases, push the walls out.
Problems with hipped roofs
Older style hipped roofs are sometimes close boarded which generally makes them a very strong roof however we do come across many cases where there is no close boarding. Close boarding however is a rarity and most hipped roofs don't have the luxury of close boarding.
Older roofs have what is known as coupled roofs, this is where the ridge is fixed with a peg.
Dating the age of the property the way the roof structure is finished
Non-traditional construction roofs
This is where a structural frame was erected and the walls were then hung off it. The structural frames can be metal, concrete or wood. Prior to purchasing a non-traditional construction property it is critical that it has a building survey to ensure there is no major deterioration to the structural frame. Many mortgage companies will not lend on this type of property unless a structural survey is carried out.
Modern roof structures
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Problems with roof timbers
Damp in roof structures
This can affect any age of roof structure and often comes about due to lack of maintenance, poor detailing or more frequently today we are coming across problems which are caused by lack of knowledge and people not wanting to spend money on this area.
Wind and watertight
We are not a great lover of chemicals and would much prefer to use woodworm traps in the form of Anode Traps which is sticky backed paper that catches the live woodworm but in some cases chemical treatment may be the only way to get some form of guarantee to enable the future sale of a property. We have often found that woodworm treatment can cause more damage than good and also often it is required to evacuate the premises.
Drying out the roof by stopping the dampness getting in will mean the environment is not as good for the woodworm; you can do this via adding ventilation. Properties should have adequate ventilation and should not be insulated disproportionately to the ventilation as this can cause condensation and provide a damp environment for woodworm.
The weight of roof tiles can affect the roof structure
The roof structure needs to give adequate strength to carry its own weight together with that of the roof covering. Some roof coverings are heavier than others, i.e. concrete is heavier than slate. Of the tiles shown below the main culprits for adding too much weight to a roof are the concrete tiles. Other roof coverings are much lighter, particularly the natural slate and the man made slate.
Additional Support in Roofs
Independent Building Surveyors
If you want an independent expert opinion from an independent building surveyor then please phone us on 0800 298 5424 to have a free of charge friendly chat with one of our surveyors. We are happy to do valuations, building surveys, structural surveys, structural reports, engineers reports, specific defects reports, home buyers reports or unique building surveys.
We feel our surveys are quite unique, as they are written to your level of knowledge. The surveys include photos and sketches and definitions. The survey will also include an action required section and an estimate of costs in the executive summary. We are more than happy to meet you at the property whilst carrying out the survey to discuss any specific issues you may have or have a general chat about what we have found at the end of the survey.
We hope you have found this article usefulWe hope you found the article of use and if you have any experiences that you feel should be added to this article that would benefit others, or you feel that some of the information that we have put is wrong then please do not hesitate to contact us (we are only human). For more information contact us on free phone 0800 298 5424.
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