Effect of pressure-washer on preserved wood?
Does anyone who uses a pressure-washer around the house or garden know
if it has a bad effect upon wood which has been treated with wood preservative? I have a lot of horizontal and vertical wood around this new house and garden here and I am inclined to apply a few coats of wood preservative - as soon as the weather allows. However, after the autumn rains and leaf-fall I expect there will be a build-up of dirt/grime/slime, in corners particularly, and so I am wondering if using a pressure-washer will remove a noticeable degree of the preservative in such places . . . in which case it would be sensible not to go buying us a pressure-washer! Thanks. Eddy. |
Effect of pressure-washer on preserved wood?
On 16 Aug, 11:22, Eddy Bentley
wrote: Does anyone who uses a pressure-washer around the house or garden know if it has a bad effect upon wood which has been treated with wood preservative? I have a lot of horizontal and vertical wood around this new house and garden here and I am inclined to apply a few coats of wood preservative - as soon as the weather allows. However, after the autumn rains and leaf-fall I expect there will be a build-up of dirt/grime/slime, in corners particularly, and so I am wondering if using a pressure-washer will remove a noticeable degree of the preservative in such places . . . in which case it would be sensible not to go buying us a pressure-washer! Thanks. Eddy. it depends on the pressure of the washer , the higher the pressure the more damage . if it is a low pressure domestic one damage will be minimal . i learnt the hard way stripping pine and destroyed some old cupboards with a industrial pressure washer.best advice i can give is stand well back and try a section thats not that visible to everyone first.as for preservative damage who knows. |
Effect of pressure-washer on preserved wood?
"paddyenglishman" wrote in message ps.com... On 16 Aug, 11:22, Eddy Bentley wrote: Does anyone who uses a pressure-washer around the house or garden know if it has a bad effect upon wood which has been treated with wood preservative? I have a lot of horizontal and vertical wood around this new house and garden here and I am inclined to apply a few coats of wood preservative - as soon as the weather allows. However, after the autumn rains and leaf-fall I expect there will be a build-up of dirt/grime/slime, in corners particularly, and so I am wondering if using a pressure-washer will remove a noticeable degree of the preservative in such places . . . in which case it would be sensible not to go buying us a pressure-washer! Thanks. Eddy. it depends on the pressure of the washer , the higher the pressure the more damage . if it is a low pressure domestic one damage will be minimal . i learnt the hard way stripping pine and destroyed some old cupboards with a industrial pressure washer.best advice i can give is stand well back and try a section thats not that visible to everyone first.as for preservative damage who knows. This is an opinion based on using a pressure washer for domestic use, and occasional s=use on ld wooden boats. It is backed up by seeing larger pressure washers in industrial and marine situations: 1) The sort of pressure created by a domestic pressure washer wont do much harm to hardwoods, but might damage the softer fibres of the likes of pine and spruce. The moral is to be careful and do a few experiments first. 2) With preserved timber, it will probably wash the preservative salts out of the surface layers. Moral is to be careful, wear protective clothes and a suitable mask, the salts are preservative because they are poisonous! Second moral is to let the timber dry out and re coat it. Having said that, removal of the dirt/grime/slime i probably better than leaving it! Thats my two pennyworth! Cheers John |
Effect of pressure-washer on preserved wood?
On Thu, 16 Aug 2007 10:22:45 GMT, Eddy Bentley
wrote: Does anyone who uses a pressure-washer around the house or garden know if it has a bad effect upon wood which has been treated with wood preservative? I have a lot of horizontal and vertical wood around this new house and garden here and I am inclined to apply a few coats of wood preservative - as soon as the weather allows. However, after the autumn rains and leaf-fall I expect there will be a build-up of dirt/grime/slime, in corners particularly, and so I am wondering if using a pressure-washer will remove a noticeable degree of the preservative in such places . . . in which case it would be sensible not to go buying us a pressure-washer! Thanks. Eddy. We have a teak garden bench which in the past got regularly 'oiled' (as did those sitting on it, but a different sort of oil!). But the surface had gone black and grubby over the years so I pressure- washed it, using a small Karcher washer (can't remember the model and it's down in the shed...). Came up a treat. Got rid of all the black crud, and left a nice clean silvery aged-wood finish. It also brought up the grain, which was a bonus, but I imagine this would be more pronounced and possibly less desirable on a softer wood with a wider grain. -- Chris E-mail: christopher[dot]hogg[at]virgin[dot]net |
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