Toby Newell
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- Surrey
whiskeyfrank said:Thanks for the advice, im not sure how to insert pictures though.
I have 3 rooms all with beams on ceiling and walls, the house was built in 1624 and was originally 3 cottages and 2 barns, there is a real mix of beams some are old ships beams as there are markings, some are what can only be described as tree trunks. A few are flat and smooth but lots are very knurled or rough texture. They are painted with gloss back paint.
I wont sand blast them as i know thats awful, but 2 different methods seem to be sold as safe for the wood, using pumice and steam (farrow) and the other im not sure (protinus)
To strip the lot would take me years im guessing.
Wow. 1624. Ship beams???!!! Markings... wow, please be careful, sounds wonderful and well, just more wonderful, It is a lot of hard work but beneath that paint probably lies the most beautiful timber you may have ever seen. That's analogous to life though isn't it? If you want a very high reward you normally are going to have to put forth a high amount of effort. It wouldn't take you years, may be a few weekends but I am one hundred percent sure you will be glad you did.
You may want to try a blasting method on the larger beams, or just scrape and sand, do not worry about the interstices why clean out every hole??? A little bit of dirt and black paint is fine, it's a centuries old beam! That's what we call patina! Who wants a clean as a whistle beam??? Much better to have a beautifully patinated beam or you could just fit casements with modern quick grown sappy oak thats why I do not favour blasting.
And farrow, lol (not ironic, a real 'lol') Let's make it sound interesting. Pumice is an abrasive, it's mostly glass, Silicon oxide and Alumina another abrasive and the steam is high pressure so, go figure, its still damaging, just the marketing bods have done the M&S treatment on it... '...this isn't just blasting this is Farrow organic Italian pumice from mount Etna and steam blasting...' when pumice is ground up into a powder it is basically 80% sand with Aluminium oxide abrasive, ie Sand!!! as in sand blasting, the reason the marketing bods use the word 'pumice' is that pumice, in it's natural form is aerated via volcanic processes and floats on water so people may perceive it to be 'gentle' a rock that floats is gentle right? Wrong!!! Air is gentle, granted, but when ground up for blasting mmmm, all the air goes out.... also you can use it to rub skin off your feet so it must be gentle right? Wrong!!! Pumice is pretty much identical to sand, so pumice blasting, omg lol etc, is just a posh, misleading term for sand blasting. The key to the farrow system is the heat element, nothing more, most modern blasting methods use a sand and water mix to increase velocity and reduce dust creation (the water absorbs the dust) ALL blasting proponents will tell you their method is gentle, they have to, how would they sell their services otherwise? If you want to know how I know so much, apart from the 25 years in the wood restoration industry I took four years out to study materials engineering at Sheffield university, so, I have done sandblasting myself and seen it done in glass and steel factories and studied it, and how the abrasives are made, and looked at them under the microscope and in a mass spectrometer etc. (High fives the ghost of Bill Hicks - I HATE lying devious marketers, spin doctors and the spreaders of false information doom to them all - and btw I mean the marketers not you whiskey frank of course!)
So the farrow system. If you dont mind simultaneously sand blasting steaming and pressure washing your beams whilst flooding your house, worth a go, otherwise, maybe not.
Toby
PS My natural curiosity wants me to try out soda blasting now, I know what effect it is going to have on sound beams as my grandfather (a French polisher who taught me and was also a master bronzer and part time gilder too) used it when he was bronzing, albeit in a workshop, just mainly to see how ridiculous (or not) the containment and clean up would be. So if anyone has large, mainly sound beams and wants their beams blasted and then sanded perfectly smooth, shellacked and waxed professionally let me know...(the beams will need sanding back slightly to remove the furry texture and give a good base for the waxing, unless you like the fuzzy-felt look and feel) only you will have to wait until cooler weather as I imagine doing such work in these temperatures in all that protective equipment would be serious madness and I am trying hard to cut down on the serious madness element of my working life. PM me if you are interested anyone but note I will not be doing this in the summer! Anyone who does, good luck to them!