Imitation sandstone

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Imitation sandstone

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Anachronism	A Anachronism posted 6 Years Ago HOT Topic Details
A Group: Forum Members Posts: 4, Visits: 20	I have oak widow sills that have been weathered for 150 years. They are deeply crevassed and painting them is not a viable option. I don't wish to replace them but would prefer to coat them in a layer of sand in a resin binding to give an imitation sandstone effect. What would be the best adhesive and binding agent?
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Anachronism	A Anachronism posted 6 Years Ago HOT Post Details
A Group: Forum Members Posts: 4, Visits: 20	+x Anachronism - 6/15/2019 8:39:16 PM I have oak widow sills that have been weathered for 150 years. They are deeply crevassed and painting them is not a viable option. I don't wish to replace them but would prefer to coat them in a layer of sand in a resin binding to give an imitation sandstone effect. What would be the best adhesive and binding agent? SBR ? anyone?
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Rich (Staff)	Rich (Staff) posted 6 Years Ago HOT Post Details
Group: Administrators Posts: 167, Visits: 4.6K	Would a pre-made material such as Sandtex not be suitable? They have outdoor, timber applicable sand based paint systems available from most good DIY stores.
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Anachronism	A Anachronism posted 6 Years Ago HOT Post Details
A Group: Forum Members Posts: 4, Visits: 20	+x Rich (Staff) - 7/16/2019 12:02:01 PM Would a pre-made material such as Sandtex not be suitable? They have outdoor, timber applicable sand based paint systems available from most good DIY stores. Hello Rich, Thank you for your answer. Yes I'm sure it would do, I have Sandtex over a rendered extension that dates back to the 30's, but it isn't what I'm wanting to do. I want an end product that looks as close to a sandstone slab as I can get, without stressing the existing masonry and foundations with massively heavy and expensive blocks. Hence my question "what would be the best adhesive and binding agent" for a sandstone effect?
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Hanaldo	Hanaldo posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	It's not really a composites application, so I doubt Easy Composites are really going to have anything suitable. They would have resins that could work, but for the application they won't be ideal - I'll let Rich confirm, but that's my suspicion. The resins we use in composites are really not suited to long-term outdoor exposure at all. You need a resin for the constructing or landscaping industry, I know there are single pack polyurethanes being used for pebble and stone binding agents but wouldn't know where you would look for them.
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Rich (Staff)	Rich (Staff) posted 6 Years Ago HOT Post Details
Group: Administrators Posts: 167, Visits: 4.6K	That is my major concern; I think I would avoid Epoxy for such a permanent application, especially with the likelihood of water, snow, ice, etc. sitting atop the surface. You could possibly use a Polyester Flocoat; they're quite viscous so difficult to lay perfectly evenly but we used to (my place of work prior to EC) use them with a carborundum grit to give a non-slip finish to boat decks. Alternatively a gravel bonding/driveway resin may be suitable. If you could apply it evenly enough, you could possibly then apply the sand/grit all over this surface to achieve the sandstone look. Edited 6 Years Ago by Rich (Staff)
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Anachronism	A Anachronism posted 6 Years Ago HOT Post Details
A Group: Forum Members Posts: 4, Visits: 20	+x Rich (Staff) - 7/17/2019 8:25:29 AM That is my major concern; I think I would avoid Epoxy for such a permanent application, especially with the likelihood of water, snow, ice, etc. sitting atop the surface. You could possibly use a Polyester Flocoat; they're quite viscous so difficult to lay perfectly evenly but we used to (my place of work prior to EC) use them with a carborundum grit to give a non-slip finish to boat decks. Alternatively a gravel bonding/driveway resin may be suitable. If you could apply it evenly enough, you could possibly then apply the sand/grit all over this surface to achieve the sandstone look. Thank you, gentlemen. I'll follow your advice and report back as and when.
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