Thompsons water seal on slate?

[DHTiling]

Substrate is concrete. I'm just to save a bit of money!!

We do not cut corners on here..

That sealer is no good for protection needed indoors .. it is basicly a water repellent and no good for fat spills etc etc..

 

[Terry Cottar]

Thomsons water seal is great for block paved drives and concrete etc. It is absolutely next to useless on Slate as Dave has already said. Furthermore the last time I priced it up it was closer to £25 not £12 however, you probably have a cheap supplier. Aqua Mix do a 3.785 Litre bottle of Penetrating Sealer for £22.99 + VAT. Spend the extra tenner would be my answer.

tel

 

[White Room]

Is this a wind up

 

[Nigel Witham]

I think the use of Thompson's Water Seal (TSW) is worth considering. Here's why.

The active ingredient in mouthwash is sodium fluoride. My densist tells me it needs to be at a concentration of .05 %. I can buy own brand mouthwash that meets this specification for 49p in Tesco or pay ten times as much for a branded product. The only difference in composition is in non-active ingedients that change the smell or sensation. I prefer not to pay for these since the add neither function nor enjoyment.

Likewise, I can buy tile cleaner from any tile store for around £10 per 500ml squirty bottle. This will be either a weak solution of phosphoric or hydrochloric acid. Both industrial chemicals produced in huge volumes and not scarce. I can also buy brick or patio cleaner for around £5 for 5L in any builders merchants. This is also a weak solution of hydrocholric acid so of course it removes cement and grout from tiles effectively. In Travis Perkins I can buy water-based masonry stabilising solution (which turns out to be a weak solution of common or garden PVA) for around £20 for 5L. I could make the same for a fraction of the cost by stirring a small bottle of woodworking glue into a bucket of warm water.

So what about slate impregnators? Well they are all silicon based compounds in a solvent. In some the solvent is water and in others it is a spirit base but in all the active ingredients are the silicon waxes that close pores and seal the substrate. That's what Thompson's Water Seal does too. I downloaded the spec sheet from Thompson's website and it confirms that it may be used on slate. I tried it on a sample slate yesterday, two coats then I wiped of the excess with a cloth. Left outside in the rain overnight it looks fine and is repelling water. I'll try it with other contaminents too. I will be surprised if it doesn't work becuase there have always been snake oil salesmen and always will be.

 

[Perry]

i have used it on slate many years ago if you pay me i will tell if it works
i have always used brick cleaner to clean tiles as well
but i wouldn't use tomsons water seal
thats because of experience

 

[Nigel Witham]

You want to be paid for sharing your experience on a forum. Are you teasing or just plain mean?

 

[Perry]

You want to be paid for sharing your experience on a forum. Are you teasing or just plain mean?

both 😛rrr:

 

[Mike]

You want to be paid for sharing your experience on a forum. Are you teasing or just plain mean?

teasing i'm sure mate. nobody pays for info on here, kudos is enough of a payment

 

[Nigel Witham]

That's a relief. So what happened with your TSW on slate? (mine is working fine).

 

[Perry]

i have used it on slate many years ago if you pay me i will tell if it works
i have always used brick cleaner to clean tiles as well
but i wouldn't use tomsons water seal
thats because of experience

but you can pay me if you like