brickwork & weatherseal

  sunnystaines 09:09 10 Jan 2014

In my garage I have a container of thompsons weather seal a clear fluid to paint or roll over the brickwork to protect from the weather left behind by rev occupier.

Are these worth using? We live close to the sea so not sure if it helps against salt in the air, neighbours do not use it.

After opinions/advice as to ditch it or use on exterior brickwork.

  bumpkin 11:48 10 Jan 2014

It wont do any harm so you may as well use it rather than throw it away.

  Woolwell 12:21 10 Jan 2014

Do you mean water seal rather than weather seal? If your bricks have been coated previously then you probably have to continue to do so. But you need to ask why they were coated? Was there damp or brickwork problems? What has happened to the cavity wall? Read Telegraph Jeff Howell

  Woolwell 12:22 10 Jan 2014

It's not true to state that it wont do any harm. If it stops the bricks breathing then it will do harm.

  sunnystaines 13:22 10 Jan 2014

thank you for the replies and the link.

  sunnystaines 14:08 10 Jan 2014

if they have been done once why do you have to continue? just a bit lost on this point if you can explain please.

  woodchip 14:16 10 Jan 2014

Its made to let bricks breath, Do not use on PLANT Containers or near plants

  Woolwell 15:03 10 Jan 2014

You may have to continue to repaint or not. It depends on why the coating was put on in the first place. If it was put on because of rain/damp ingress then you will need to recoat as in exposed areas, especially coastal, it will wear quite quickly and the protection will be lost. You really need to know why the previous owners did this.

  Forum Editor 15:22 10 Jan 2014

The fluid you have is a silicone-based sealant. It will be absorbed by the bricks and the mortar courses, and is designed to decrease porosity. Thi affords a degree of protection against water penetration and consequent spalling, which is the crumbling and flaking often seen on the face of certain types of brick.

Don't worry about warnings that you will stop the bricks 'breathing' - bricks don't need to breath.

The best way to apply the liquid is with a garden sprayer.

  sunnystaines 15:31 10 Jan 2014

thanks for continued help, will have to wait for the spring till dry weather comes now. i do not think it wise to put on in damp winter.

  Woolwell 17:46 10 Jan 2014

FE - Bricks do not need to breathe. Is this article Caring for brick walls incorrect?

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