Old coal cellar damp proofing.

[johniosaif]

I am doing a cellar for my pal Who is a new builder ie been at it a couple of years, he is doing a big house and is almost done, we plastered most of it over the last few weeks on and off, the clients asked for the cellar to be plastered so it would be usable,when I saw it today it was full of crap so we emptied it,then it was painted so we raked the joints ,roughed the bricks up etc,everyone as ever assumed it was bone dry but the rarely are,the rain was leaking through the metal cover outside,I blocked up the wall allowing that it's easier to float it out square and to keep it dry,they aim to seal the cover from above at some point, we splatter coated the bricks after damping down with3/1 sand cement with sbr at 3/1 also, normally I'd tank this but he under priced it a lot, so the best cheap way is what I seek, I aim to do a monolithic coat tomorrow at 4/1 with sika 10/1 floated in as a finished render and scooped to the existing floor, any views on this..

 

[Fatarm]

Sounds a cuunt of a job asif:RpS_thumbdn:

 

[keithuk]

Metal stud the lot ,imho ,it is a basement :RpS_scared:

 

[johniosaif]

Sounds a cuunt of a job asif:RpS_thumbdn:

Not wrong

 

[johniosaif]

Metal stud the lot ,imho ,it is a basement :RpS_scared:

Given the option,I'd delta membrane it.

 

[keithuk]

Same as Newton ?

 

[johniosaif]

Same as Newton ?

Same, my brother just done the one day delta course,he runs jobs for a builder,after three jobs he will be able to certify them himself, lovely clean work compared to tanking

 

[S a plastering]

Done tons of delta great stuff butt normally has to form a drainage system which runs down the wall under the floor an into a sump pump good system though

 

[keithuk]

Basements done right , add a lot of money to the property ,a quick cover over is a waste of money ,but as you know John ,you can only do what the customer can afford , i started of in the damp game (family business )and still do bits when we get rained off or a gap in work ,like the last few days :RpS_cursing: ,but pays the bills ,lucky the company i have done work for over 15 years are always busy :RpS_thumbup: always has work on very short notice

 

[carlos]

Depends what the room is to be used for. If its habital area it need to conform to BS 8102 2009 and may need building regs, for insulation etc

If for storage areas you can do what you like.

 

[johniosaif]

Depends what the room is to be used for. If its habital area it need to conform to BS 8102 2009 and may need building regs, for insulation etc

If for storage areas you can do what you like.

Not for living in,no windows, utility I think

 

[Arti]

Champagne ideas with lemonade money.............................:rolleyes)

you cant half arse these jobs.............come back and bite you everytime

 

[carlos]

3 coats of SBR slurry will act as tanking. Link Removed

Sika or SBR render over the top rubbed up smooth then painted is probably the cheapest method.

Unless you wanted to chop a 50mm deep x 25mm wide channel to the perimeter and polythene the wall taped together, tucked into the channel. sealed into the floor with a SBR mixed 1:1 sand cement mortar. Batten using delta brickplugs with the seals, plaster board and skim.

 

[Wallm0nkey]

I echo above worth doing properly they end up lovely rooms but it can end up a serious amount of work if it's just a bit of storage. We made the switch from the newton membrane to Wykamol works out a fair whack cheaper and quality is equal quite a few similar systems to choose from now.

 

[carlos]

Wykamol, John Newton, delta, Old Roy. Platon.....the list goes on all the same really and work on the same principles. All will tell you there's is the best but nothing in it really.

 

[Rhys]

Did a biggish damp job a while ago - flooded house, walls chopped off 3' up. It was specified for sand and cement with Silka1 added - this was lapped onto the floor by a foot as well. The contractor then screeded the floors using Silka1 in sand and cement.

Don't know if breathable plaster would be used in your situation (limelight) had a few jobs just lately where they want limelight.