Home Treatment Guidance An in situ staircase to control Woodworm
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Guidance on how to:

TREAT AN IN SITU STAIRCASE TO CONTROL WOODWORM

staircase2The top surface of most staircases, except for a central strip where a carpet or lino runner was present years ago is usually painted. A soffit is sometimes present beneath a flight of stairs leading from ground to first floor and one is nearly always present beneath stairs above first floor level preventing direct access from beneath. In addition glued wedges and triangular blocks will have been used in the construction and invariably one, if not both of the strings will be against a wall restricting access further. The combination of all these physical factors means that it is seldom possible to achieve full treatment of an in situ staircase.


IMPORTANT

There is no justification, need and very little benefit to be gained from using a timber treatment material that also contains a fungicide when treating woodworm.

 

WS: Staircase woodworm treatment with no soffit present:


WS.1 Before work commences display appropriate warning notices at entry points into the property and treatment area to inform others what health and safety precautions should be taken before, during and after treatment. These notices should be available from the treatment fluid manufacturer.

 

WS.2 Turn off any electricity in under stairs area. If an electric meter and/or fuse board is present in the under stairs area these should be wrapped in plastic and securely taped to prevent any treatment fluid from entering.

 

WS.3 Completely empty the under stairs area of all stored articles and any other obstructions that may be present. Remove any covering from top surface of the stairs.

 

WS.4 Use only special safety lighting immune to the effects of spraying.

 

WS.5 Clean down by brush and/or vacuum all accessible unpainted top and underside surfaces of the staircase timbers.

 

WS.6 Read the label of the woodworm treatment material and material safety data sheet before use and take all precautions stipulated on the label including the wearing of personal protective equipment, removal of pets, food stuffs etc.

 

WS.7 If a water based concentrate is being used dilute sufficient woodworm treatment concentrate in accordance with the instructions and fix a dilute material label to the container. (Dilute material labels should be available from the manufacturer). Make ready application equipment.

 

WS.8 Apply Woodworm Treatment fluid to all accessible unpainted timber surfaces of the staircase at the prescribed application rate and if present the unpainted surfaces of any adjacent timber spandrel.

 

WS.9 Only when treated surfaces are completely dry remove plastic protection from electric meters and fuse board.

 

 

WSS: Staircase woodworm treatment with soffit present

 

WSS.1 Before work commences display appropriate warning notices at entry points into the property and treatment area to inform others what health and safety precautions should be taken before, during and after treatment. These notices should be available from the treatment fluid manufacturer.

 

WSS.2 Turn off all electricity in the vicinity of the stairs area that might be affected by the treatment.

 

WSS.3 Clean down by brush and/or vacuum all top surfaces of the staircase timbers.

 

WSS.4 Read the label of the woodworm treatment material and material safety data sheet before use and take all precautions stipulated on the label including the wearing of personal protective equipment, removal of pets, food stuffs etc.

 

WSS.5 Dilute sufficient Woodworm Treatment concentrate in accordance with the instructions and make ready application equipment including the attachment of a stair back spray nozzle to a spray lance trigger.

 

WSS.6 Drill two 10-mm holes through each riser along a central horizontal line, equidistant from each string and each other.

 

WSS.7 Introduce the full length of the stair back spray nozzle into each 10-mm hole and squeeze the spray lance trigger for approximately five seconds rotating from left to right at the same time to maximise coating potential of the Woodworm Treatment fluid.

 

WSS.8 Reconnect conventional spray lance to application equipment and using a coarse low pressure spray, apply Woodworm Treatment to any unpainted top surfaces of the staircase. This may be carried out by brush application if preferred.

 

Notes on staircase treatment

1. The construction and position of an in situ staircase is such that there are many physical obstructions present preventing access to all surfaces. For this reason we would advise that careful consideration should be given before issuing any long term guarantee on the treatment of an in situ staircase.

 

 

SAFETY

Wood preservatives and wall treatment fluids are regulated under the Control of Pesticides Regulations 1986. Under these regulations it is an offence to supply, store, sell or use these chemicals unless they have the appropriate approval. Approved products are given an HSE number which must appear on the label. Essential information for the safe use of the products is also given on the label. Specifications for the supply or application of these chemicals should require that only products and processes approved under the regulations shall be used.

 
Contact Peter: Email - info@dampdecay.co.uk - Telephone: 015242 71794