I've just found your channel and have spent the last two hours watching a few of your videos, and your knowledge and skill is very impressive. Very neat and tidy work Mr Porter :)
When you are tamping back the finished pointing, keep tamping and you will clean off the snots. If you have finished the works then brick acid and careful application with a small brush will be a good way to remove lime stains. Just be careful not to get any on your lime mortar or it will dissolve and degrade it dramatically.
An excellent, interesting video, thanks. Regarding the effect of the hydrochloric acid on lime mortar: the products are calcium chloride (which is highly soluble in water), carbon dioxide and water. Strong hydrochloric acid fumes a lot, and you should really wear a decent respirator while using it! (I’m an ex university lecturer in chemistry.)
Thanks @paulklasmann1218. I'm not sure what concentration the HCl is. That would be my pals department to know. You will be fine using it on sandstone. Just keep it away from any limestone or it would dissolve your substrate!
@@dportercontracting9974 Thanks for the reply and advice. I suppose I can test it on some spare stones from the infill before using on any external stones. I think the concentration I have is 30 or 20% which I used for etching copper.
@@dportercontracting9974 When used for etching copper, its mixed with Hydrogenperoxide and some water to slow down the etch rate. I used it for making home made circuit boards, so it etched all the exposed copper leaving only the wanted tracks. After a while it becomes less effective and stops all together when its "spent". You could etch away larger amounts of copper by replacing the solution. It should be used with great care and good ventilation.
I live in a 114 year old brick building in desperate need of lime mortar repointing. Repaired with all sorts over a century. I don't see the repair/maintence happening. 😢
@@vasilyivanenko2730 My friend, I have many videos to upload and am trying to find the time to uploads them. Stay tuned and I shall try to get time this week.👍
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
I came to learn.... but stayed for the banter lol Looking forward to seeing how those bricks clean up!
Stunned at the results of the acid on the lime! Did not know about that. 🤦
I've just found your channel and have spent the last two hours watching a few of your videos, and your knowledge and skill is very impressive. Very neat and tidy work Mr Porter :)
Many thanks for the comment. Glad you have found the channel interesting.
Looking forward to seeing the end result very much.
Mr Porter wearing a dust mask at last😁
Just let me know if you need to borrow a sharp implement and I will send the mother-in-law your way 😂
Love it!🤣
How did you chamfer the bricks, please
@@rebeccaharding5175
Hi Rebecca, the bricks were chamfered using the tungsten tipped chisels.
Could it just be a point of pressure with everything expanding and contracting with the heat?
Green Ohm, that was some good strong acid.
Hi Once you have completed the pointing, is there any easy way to remove lime stains? or would you re-apply the acid?
When you are tamping back the finished pointing, keep tamping and you will clean off the snots. If you have finished the works then brick acid and careful application with a small brush will be a good way to remove lime stains. Just be careful not to get any on your lime mortar or it will dissolve and degrade it dramatically.
An excellent, interesting video, thanks.
Regarding the effect of the hydrochloric acid on lime mortar: the products are calcium chloride (which is highly soluble in water), carbon dioxide and water.
Strong hydrochloric acid fumes a lot, and you should really wear a decent respirator while using it!
(I’m an ex university lecturer in chemistry.)
Fooled you then !
Very interesting to watch. What concentration is the Hydrochloric acid? Is that only suitable for cleaning brick and not sand stone?
Thanks @paulklasmann1218. I'm not sure what concentration the HCl is. That would be my pals department to know. You will be fine using it on sandstone. Just keep it away from any limestone or it would dissolve your substrate!
@@dportercontracting9974 Thanks for the reply and advice. I suppose I can test it on some spare stones from the infill before using on any external stones. I think the concentration I have is 30 or 20% which I used for etching copper.
@@paulklasmann1218 Good idea. That saves busting up any bespoke stone.
Does the acid eat away a specific amount of copper when you apply it?
@@dportercontracting9974 When used for etching copper, its mixed with Hydrogenperoxide and some water to slow down the etch rate. I used it for making home made circuit boards, so it etched all the exposed copper leaving only the wanted tracks. After a while it becomes less effective and stops all together when its "spent". You could etch away larger amounts of copper by replacing the solution. It should be used with great care and good ventilation.
I live in a 114 year old brick building in desperate need of lime mortar repointing. Repaired with all sorts over a century. I don't see the repair/maintence happening. 😢
Hope you get might time to make a new video please. Thank you!
@@vasilyivanenko2730 My friend, I have many videos to upload and am trying to find the time to uploads them. Stay tuned and I shall try to get time this week.👍
@@dportercontracting9974 Big thanks -- Of all the billion RUclips channels -- yours is my very favorite. Best to you!
acid wash takes balls