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Sealing interior stone wall.

nokiatom · 2021-02-12 00:45:04

have a small shed outside which has old stone walls. I want to use it as a store. the old white mortar/plaster is falling off. It has no dampness. If I remove all the plaster is there something I can paint the walls with to stop loose mortar from falling down? I don't want to go to the bother of replastering it due to cost…

12-02-2021 12:45am

#1

nokiatom

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have a small shed outside which has old stone walls. I want to use it as a store. the old white mortar/plaster is falling off. It has no dampness. If I remove all the plaster is there something I can paint the walls with to stop loose mortar from falling down? I don't want to go to the bother of replastering it due to cost and time. Would polybond be suitable? I don't intend painting it.

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Comments

#2 12-02-2021 11:38am

Lumen

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Don't seal mortar, that's how the walls breathe.

If the mortar is loose then it needs repointing.

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#3 12-02-2021 12:05pm

nokiatom

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Lumen wrote: »

Don't seal mortar, that's how the walls breathe.

If the mortar is loose then it needs repointing.

someone suggested white washing it. Would that prevent the wall from breathing?

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#4 12-02-2021 12:32pm

ARGINITE

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White washing would be breathable

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#5 12-02-2021 12:32pm

Lumen

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nokiatom wrote: »

someone suggested white washing it. Would that prevent the wall from breathing?

Limewash will be fine but it won't hold in loose mortar.

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