Bluestone delamination repair

[Michael Sackler]

I am looking for advice on stopping the delamination of 100 year old bluestone exterior steps and landing. Initial tooling the surface to remove unstable layers seems to have no end, and nothing will be left. Grinding with a cup grinder to feather out the layer results in
a gouged-out look. There is no guarantee after grinding that water will not get into the layers and continue the delamination. Any advice?

	grinding This is the second stage in securing a flawless surface. This stage will remove all scratches from any de-lipped surface.

[Huligar]

do you have any images of the damage area of the blue stone?

[Michael Sackler]

See the attached photo.

[Huligar]

Sorry, but I do not see any images.

[Michael Sackler]

OK, here we are, again.

[david bassler]

Michael
A stone consolidator may be your answer for the de-lamination of the clefted Bluestone.
Prosoco or Drytreat work well to form a silicone dioxide bond of loose or friable stones.

[Huligar]

stone consolidation was the advice I gave him over the phone.
I hope he returns and let us know how it works out.

[david bassler]

If you use the consolidators there is danger if applied with the suns rays cloudy or not causing a whitening affects that are permanent.
Do not apply with the sun directed at the stone.

[Huligar]

Michael Sackler, I just got off the phone with a guy that may be able to get you a replacement if needed.
Let me know and I will post his information.

[deted1]

I've removed the whitening affect with ammonium bi-flouride.