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How to seal sliding door sill?

Outside patio door sill (Threshold) has tiles and mortar is cracked. Water seeps down into storage room downstairs. How do I get this sill water sealed, so no water seep into storage room downstairs?

Picture below shows sill tiled and RED line mark up for mortar cracked/degraded.

Appreciate any tips, advice.

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Comments

JacobZ

Hi @Chappie4,

Thank you for your question and welcome to the Bunnings Workshop community, it is fantastic to have you with us.

I'd suggest breaking out and removing the cracked mortar and replacing it with a flexible sealant such as Mortafil. I'd suggest heading in store to compare the colours and select the one which will match best.

You can push Moroday 15mm x 5m White Gap Filler Rod into the gap and apply the Mortafil over the top ensuring you get a continuous bead across the whole length of the gap.

Check out How To Silicone a Gap for some guidance. The application is slightly different, but the principles remain the same.

Let me know if you have any further questions.

Jacob

Chappie4

https://www.workshop.bunnings.com.au/discussion/comment/44581#Comment_44581

Jacob, mate really appreciate the reply and tips. I'll give that a go definately.

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