Waterstops/Waterbars - needed or not?

[BotusBuild]

We are building with an insulated raft foundation and ICF and I have seen mention of these in various topics, and have scoured my architect and SE drawings and notes for mention of these on our build. I have investigated what they are, and what they do, but its still not obvious as to whether they are needed on not.

 

Awaiting the inevitable differences of opinion with interest ?

 

[Happy Valley]

We put them in (Triton waterbar) even though we have waterproof concrete rafts. We questioned their necessity as they are expensive but both professionals stated that we should use them. 

[saveasteading]

2 hours ago, BotusBuild said:

what they are, and what they do

......is keep water in place in water retaining structures, to close off a joint which might be a weakness.

 

If you are building above ground, have a well-detailed damp-proof construction, and it is not a water tank then you should not need one.

 

Or it is a simple bar across a flat door threshold to keep the rain out.

[Ronan 1]

Put up a pic where they are detailed and it should be fairly simple to say if they are required or not

[BotusBuild]

I have now found one short sentence on one drawing that mentions a waterbar to be fitted.

 

Any other recommendations apart from Happy Vally's Triton waterbar.

 

I found this - https://www.sikawaterproofing.co.uk/products-systems/sikaswell/ Anyone used it? 

[SteamyTea]

It is only recently I have heard any mention of waterbars.

Have the regs changed?

[BotusBuild]

@SteamyTea, not sure on the Regs related to this, but as I am building a partial basement, waterproofing is a definite requirement and from what I have read waterbars seem to be a necessary part of that waterproofing (Type B). I will now be fitting one (now I have read my plans again) and so a BBA approved product is the order of the day.

 

[SteamyTea]

1 minute ago, BotusBuild said:

as I am building a partial basement

Seems the closet to Bristol one gets, the more of the ground floor gets covered.

If I dig down more than a metre it would be called a tin mine.

[saveasteading]

43 minutes ago, SteamyTea said:

more than a metre it would be called a tin mine.

I am an expert on this from watching Poldark, which defines all the SW. 

 

When times are tough you hope to find a shoal of tin or a seam of pilchards, or cause a wreck.

[SteamyTea]

5 minutes ago, saveasteading said:

I am an expert on this from watching Poldark, which defines all the SW. 

 

When times are tough you hope to find a shoal of tin or a seam of pilchards, or cause a wreck.

Yes, we are about to reopen all the fish mines.

And all the girls in Ilogan are as horny as Demelza, even allowing for her hip displacement

[Ronan 1]

6 hours ago, BotusBuild said:

 

Any other recommendations apart from Happy Vally's Triton waterbar.

RX101 , i don't use any other and its what most designers spec as standard on large RC frame projects where required.

[BotusBuild]

15 hours ago, SteamyTea said:

If I dig down more than a metre it would be called a tin mine.

I've got a tin mine then ?

[SteamyTea]

13 minutes ago, BotusBuild said:

I've got a tin mine then ?

You are the wrong side, china clay tea cups is what can mine.