Please answer: I have a 1920's brick garage. The outside looks fine. The inside is lined with clay bricks and has some efflorescence/ spalling in one area. I cannot pressure wash. Can I just brush as clean as possible and apply? Do I apply outside and inside? Thank you SAMPLE - Green Building Supply, Penetrating Concrete Sealer Concrete & Masonry Sealers

Question

Please answer: I have a 1920's brick garage. The outside looks fine. The inside is lined with clay bricks and has some efflorescence/ spalling in one area. I cannot pressure wash. Can I just brush as clean as possible and apply? Do I apply outside and inside? Thank you SAMPLE - Green Building Supply, Penetrating Concrete Sealer Concrete & Masonry Sealers

Status: Open Oct 06, 2020 - 07:11 AM

1answer

Answer

Oct 09, 2020 - 07:54 AM

First try to figure out what is causing the efflorescence and spalling because both may be due to water coming from the outside. So look outside first to put a stop to that.Once you've done that, yes, brush the brick as clean as possible and apply Green Building Supply Penetrating Concrete Sealer to the brick inside and outside to seal the brick against water. If you used water to clean the brick, allow it to dry thoroughly before applying the GBS Penetrating Concrete Sealer so the brick can soak it up.