One For The Builders/Roofers

[Raffles]

I know that this may seem like a silly question but is there any fundamental difference, other than colour, between red sand and grey sand? The reason that I ask is because I am having all of the ridge tiles re-bedded on my roof and the roofers that I have spoken to seem very reluctant to use red sand. I am keen on using red as the rest of the house was built using red and I want everything to match.
Another bone of contention is over the strength of the mortar mix. Most seem to think that a 4 - 1 mix would be the way to go although one guy suggested 3 - 1 and one guy said that anything other than 2 - 1 would not be suitable.
Any thoughts from those in the know?
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[herulach]

I'm neither, but a lot depends on the type and age of tile, also, the difference in the sand probably isn't just the colour, but the grade as well.
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YBR 125>FZS600

[Howling TerrorOutOfOffice]

I've done ridge tiles before and after 15yrs they're still good.

I would've used a 4 to 1 mix using sharp sand..supports the weight when bedding the ridge tiles (mine were large and quite heavy).

Any building sand is upto the job and comes in many colours. Red would be fine. Too strong a mix usually results in cracking.
Keep clear of play sand and dried sand used in block paving.

I had a habit of secreting a coin in any job involving cement.
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[Steve-D]

Whoever told you 2:1 is useless, 4:1 or even 5:1 will be fine. As said to strong a mix and it will crack the tiles.
No difference apart from the colour. Probably have a load left over and don't use a lot of it and don't want to buy any.
All about profit margins.
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