Cleaning Brickwork prior to applying Stormdry

[John74813]

Hi

Can I get some advice please - I've had some work done on the front of my house to fix an issue with water ingress. I now need to paint it with Stormdry (Water repellent). I have two questions I would appreciate your advice on please:

1. What can I clean the blackened brickwork with? I've tried Spear and Jackson spray and leave but it doesn't seem to have done anything.
2. Is there anything I can do to make the new bricks/pointing blend in better? Or will it do so over time?

Thanks in advance
J

 

[Wayners]

You need a nylon brush and cleaner.
Something like.

https://amzn.eu/d/jaURpb2

 

[John74813]

https://amzn.eu/d/jaURpb2

Thanks Wayners, that will clean up my old bricks/mortar? I think they are blackened because it's so exposed and they're constantly wet when it's raining

 

[Wayners]

Just need to clean the best you can then treat.
You can hire a jet wash or get a company in but you need to be careful not to damage bricks.

 

[foxhole]

Can’t think of any good reason to apply stormdry to brickwork , needs to be able to breath to avoid damp .

 

[John74813]

Just need to clean the best you can then treat.
You can hire a jet wash or get a company in but you need to be careful not to damage bricks.

Ok thank you

Can’t think of any good reason to apply stormdry to brickwork , needs to be able to breath to avoid damp .

Damp surveyor suggested it - Stormdry still allows the bricks to breathe.

 

[mrrusty]

Damp surveyor suggested it - Stormdry still allows the bricks to breathe.

Since brick houses, well designed and built properly, don't require additional surface coatings to stay dry, it does beg the question why yours needs it.

 

[Ivor Windybottom]

I'd use a DIY pressure washer, with the gentler fan jet - not the cone one that is a spinning needle jet. A DIY one will be reasonably gentle, a hired or commerical one might be a bit too hefty. If you're stripping the surface then stop.

Lots of people recommend StormDry, but I don't know how many are sponsored by them.

Vapour Permeability & The Truth About Stormdry - Skill Builder

Roger carries out some vapour permeability tests to see if the claims made by Safeguard Stormdry are

skill-builder.uk

I used something similar on my previous house, it worked very well.

If there's green or black staining within the brick after washing then it needs chemical treatment to kill the moss or whatever's growing there. Let everything dry before StormDry, probably not the best time of year for it now.

 

[aveatry]

Storm dry is a bit of a marmite thing on here.
It can be useful, I have used it on the top chimney flouncing mortar and after repointing the chimney I used it only on the mortar and some bricks that had a top facing the sky. I also used it after I had redone some valley mortar and I used it on the ridge tile mortar. But I would not consider it for painting all the brick face.