Paint spec for renovated sash windows

[O'Chippy]

If you do ebay shops are still selling hamilton perfection black China bristle brushes!

You previously mentioned these brushes are being phased out, why is that?
And why are they so good, and what is a good size to buy?
Thanks again for all the comments Johnny!

 

[johnnyb]

There absolutely the best for oil based paint. There being phased out because oil based is not as popular and natural bristles are becoming really pricey. Suitable synthetic alternatives (purdey monarch Pro elite say)are ridiculously expensive.
Dulux centre have no bristle brushes in stock.

 

[spanner48]

Am I allowed to suggest that paint - any paint - is not the best solution? It will invariably develop cracks at some point, allowing water to enter, then keep it in and prevent drying-out. Rot follows.

My [mock-Georgian, wooden with glazing bars] windows are treated with a wood preservative: either Creosote [widely available, in quantity] or Copper-organic - such as Barretine or Ronseal. The treatment should meet UC Class 3 [exterior, out-of-ground] exposure conditions.

My windows have not deteriorated in the last 9 years, with a brush application every 3 years or so – paying particular attention to any exposed end grain.

Barretine and Ronseal come in various 'woody' colours. Not as smart as paint; but much more effective.

 

[Windows]

Would people that have linseed paint or no paint on their windows be willing to post some photos?

Also what are people doing on wooden door sills/thresholds? Same as for windows or something different?

 

[Homeless Squirrel]

If you do ebay shops are still selling hamilton perfection black China bristle brushes!

Rarer than Chickens milk these day's!

 

[Homeless Squirrel]

You previously mentioned these brushes are being phased out, why is that?
And why are they so good, and what is a good size to buy?
Thanks again for all the comments Johnny!

Hamiltons used to do Ranges of Bristle brushes and there that was aimed at trade top end was Congo which had the shortest bristles which are a bit like when run a brush in!.Then had Perfection then Perfection plus which had the longest bristles and a much fuller flag so a very solid brush why more expensive and why you looked after them as once run in they painted like a dream.
Hamiltons had a major issue with bristles snapping constantly "Cheap China Porkers"? so they cut the range right back as couldn't get the bristles.
Then restarted the Perfection range not as good as they were but ok (Have a stash here)there are also Noir/Nour? brushes that are good and some like Harrison etc.
Many places don't like Purdey due to Slave Labour in American Jails making them!.
Seagull is another Synthetic range.

There are some other makes of Brushes that are good as i got an oval brush which think came from France?

 

[Homeless Squirrel]

One issue with Spraying is the paint is only just touching the surface and almost dry.

 

[Homeless Squirrel]

There seems to be as many votes for water based and against solvent, as there is for solvent and against water based!
The truth must be that most of the time both either paint will perform completely fine, otherwise the argument is that one camp is always right and the other always wrong; and that is simply not plausible.

Regarding drying time/weather I have all windows and frames removed and the plan is to paint them n the workshop so hopefully that will control the moisture levels.

Well if have in workshop many thin coats are better than one fat coat!

 

[johnnyb]

Johnstones did fat hog black China and they were good to. Bit stiffer than Hamiltons.

 

[O'Chippy]

@deema I had a look at the Erbauer airless sprayer, it has some really great reviews and from professional decorators who seem knowledgeable. Thanks for suggesting it.
Their HVLP sprayer is similarly well reviewed and only £60, I think it may be great option for a first foray into spraying woodwork.

I had called a couple of the main spraying equipment suppliers for advice, explained I am a complete novice and would only have occasional need for a sprayer (once yearly at most) and hence was interested in the ~£500 higher end DIY spray they sell.
Both were only interested in selling me Pro entry level machines starting at ~£1k.

I understand they are salesmen but their advice and the sprayers they were trying to sell me were not at all suitable for my situation.
It really brings home the value of this and other DIY/trade forums were you can get some truly unbiased advice.

 

[deema]

Yoi could go the secondhand option with something like this? Titan are good sprayers

https://www.facebook.com/marketplace/item/1531051270918582/

 

[O'Chippy]

Yoi could go the secondhand option with something like this? Titan are good sprayers

https://www.facebook.com/marketplace/item/1531051270918582/

Possibly, but for now I think the £60 HVLP provides a good introduction to spraying,
I also think that perhaps HVLP may be the better option (vs airless and my novice ranking) for my windows and a new front and frame I'm working on

 

[deema]

Airless is easier IMO to start. HVLP you have to dilute the paint and it’s not as forgiving.

 

[johnnyb]

£60 hvlp will struggle. In fact hvlp and water based will struggle. You'll waste your effort. And get real frustrated. But it's all good experience! If it can't spray heavy undiluted paint it won't work.

 

[O'Chippy]

£60 hvlp will struggle. In fact hvlp and water based will struggle. You'll waste your effort. And get real frustrated. But it's all good experience! If it can't spray heavy undiluted paint it won't work.

When you say it will struggle and wont work, are you referring to the paint finish and end result that both HVLP and/or water-based will produce?
I believe the hvlp will also spray oil based, albeit I assume diluted.

 

[johnnyb]

By the time it's thinned enough to spray the coating is 50% water and highly compromised. The same with oil really. (If it even atomises) with a 9.5 blower and a 1.8 needle it's borderline with water based tbh. Rent an airless.

 

[johnnyb]

If your spraying water based through a 9.5 you really need to heat the paint to make it fluid. Heated hoses are superb on airless as well. But beyond the scope of our discussion.
Heating paint effectively when air atomising is tricky tbh(the air is cold)
Hvlp will spray solvent based paints and lacquers perfectly.