Cant get a roll wide enough, so have to lap it
What should I use to join and seal it?
What should I use to join and seal it?
joining dpc membrane
- Thread starter b21playa
- Start date
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H
hotrod
How wide do you need it and what are you using it for?
More info' if you please.
Generally it is simply lapped no need for tape. Taping joints usually applies to surface membranes - floor, ceiling or wall.
How wide?
Generally it is simply lapped no need for tape. Taping joints usually applies to surface membranes - floor, ceiling or wall.
How wide?
floor is 5.7m x 4.85m
Roll is 4m x 15m
Also whats the best practice to ensure no voids in corner when pouring concrete
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dextrous
Use DPM jointing tape applied as per manufacture's instructions - available at wickes I think.
Create shallow tray from the dpm and tack to the walls prior to pouring concrete. Tamp down well as it is laid - any pockets on the corner will be minimal if you have created the box effect well enough in the corners. Use a fairly fluid mix - the suppliers will be able to advise, and wear wellies 'cos it can burn!!
Create shallow tray from the dpm and tack to the walls prior to pouring concrete. Tamp down well as it is laid - any pockets on the corner will be minimal if you have created the box effect well enough in the corners. Use a fairly fluid mix - the suppliers will be able to advise, and wear wellies 'cos it can burn!!
H
hotrod
Aha right, your post is entitled "dpc" hence my confusion. You mean a DPM. 150mm overlap on the DPM, you can use DPM tape for a "propper" job but dependant on the environment you may omit as appropriate. Vibrating poker to ensure minimal voids in the concrete. If you're using something like a C20 it should rake around quite easily (you can always ask the driver to add more water if requred). A good tamping to finish.
Not sure of the exact requirements for your project but if you need to do a DPM/DPC detail you may find this useful:-
hth
what should be used to seal dpm to dpc?
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