Dry Rot Treatment Specification
Preparitory work to be carried out under a separate contract prior to our arrival:-
- Provide safe working access to the areas of treatment.
- Rectify cause of moisture, and promote drying out.
- Remove wall plaster and open up floors etc. to the areas identified in our report and to at least 1.0m beyond the last visable evidence of fungal growth.
- Cut out affected timbers to approximately 1.0m beyond any signs of fungal growth.
- Remove all resultant debris and all debris from sub floor areas, oversites,etc.
Steralisation works by Dryside Ltd
- Throughly inspect the exposed area(s) and confirm the cause of the dry rot attack and the extent of the area(s) of the necessary steralisation. If necessary we will submit a revised quotation for our works.
- Treat the defined areas by one or a combination of the following methods:-
- Thoroughly surface saturate the specified area(s) with dry rot fungicidal fluid.
- Irrigate the masonry with dry rot masonry fungicdal fluid, pressure-injected into 10 to 12mm diameter holes drilled at 200 to 300mm centres and also surface saturate.
- Form a toxic box (Cordon Sanitare) by drilling a double line of 10 to 12 mm diameter holes at 50 to 100mm centres around the perimeter of the dry rot attack and the adjacent unaffected timbers and pressure injecting them followed by surface saturating with dry rot masonry fungicidal fluid.
- Saturate to oversite or hardcore.
- Apply boracol (Probor 20 or similar) high performance timber preservative to the surfaces of immediate surrounding sound timbers remaining in situ.
Client under a separate contract to reinstate as follows:-
- Where possible use concrete lintels etc.to local Building Regulations in preference to timber and avoid embedding timbers into and onto the treated surfaces.
- Replace defective timbers with new pretreated pressure impregnated timbers with all cut ends treated with a fungicide and isolated from the masonry and oversite by a suitable DPM. These timbers should have a moisture content of less than 15%.
- Replaster as necessary to our replastering specification.
The importance of rectifying the source of moisture that caused the dry rot attack is critical to the prevention or recurrance of further or future rot and decay.
Promoting drying out at all times during and following the above specified works until the masonry (this may require the installation of temporary dehumidifiers) has dried out fully. This is likely to take a number of months. During this period we recommend the areas of treatments be carefully monitered until dry.