rain filling up my dpm!

[staithes14]

I'm halfway through laying a conservatory base, concrete over polystyrene insulation, with a dpm under that. Thing is, it's absolutely hammering down, and my insulation on the half that's still to do is beginning to float!

I guess I can lift some of the insulation and bail out the water carefully (so as not to puncture the dpm) but not all, as some of it runs under the already laid (and set) concrete. Is it OK to lay concrete if there's still a bit of water on the dpm? I won't be able to get it dry I don't think, and I want to get the rest down asap.

Looks like it's going to be wet weather the rest of the week.

 

[Deluks]

The weight of the concrete will prevent water from getting under and doing too much damage. The other side should be bailed out, plastic dustpan works well, and mopped up best you can. Old towels, big sponges sort of thing.
Concrete should really be poured in one continuous hit though. Always keep a tarp handy when concreting.

 

[staithes14]

OK cheers. Yeah I had intended to do it all but as sometimes happens, I had to unexpectedly leave it half done. Annoying but unavoidable.

 

[^woody^]

Can't you put a small hole in the DPM to drain it?

 

[alittlerespect]

Why don't you use a 'wet' vac or small pond pump and suck the worst of the water out?

Regards

 

[staithes14]

I lifted the insulation as far as possible and mopped the water up. There's a few dribs and drabs left but I doubt that'll be a problem. It's under 4" of concrete now anyway!

 

[noseall]

Can't you put a small hole in the DPM to drain it?

This has beed done via a garden fork many times......