We are interested in waterproofing the cellar in our flat which is on the ground floor of a 1870s built South London terraced house (for which we own half of the freehold). We want to use the room for computer equipment / storage of papers etc which the current dampness even with dehumifier doesnt allow.
The cellar is under the house's hallway and is 6 x1.85metres in size and just under 2 metres high.
From reading answers on here it seems we need to 'tank' the cellar to make it waterproof but how much is this likely to cost us? And would we be able to paint straight on or will it require a layer of plaster? The floor also will probably require levelling. And will we need planning permission - the house is in a conservation area but others in the street have had it done. Job wise will it require a specialist or are general builders ok?
Apologies for the multiple questions but I would like to have an idea of rough costs/ procedures before calling in builders for quotes
2006-10-24 02:23:26 · 6 answers · asked by lukee 5 in Home & Garden ➔ Decorating & Remodeling
Luke, you would be best to ask....."others in the street" who've had it done. The people that did the job, the relevant circumstances, will be local.
2006-10-24 06:31:02 · answer #1 · answered by Dick s 5 · 0⤊ 0⤋
Cellar Tanking Cost
2017-01-01 07:45:18 · answer #2 · answered by ? 4 · 0⤊ 0⤋
To answer the simple questions first.
No you do not need planning permission.
Yes you should go to a specialist.
Tanking of basements should never be considered to be anything other than a short term solution to dampness. Various systems and products exist to do this but all of them suffer from one basic problem. They are applied to the wrong side of the structure.
When installed retrospectively tanking or damp proofing systems are applied to the inside of the building. So basically all you are doing is covering up a damp surface to create a dry environment within the cellar space.
The problems come from the fact that the building structure is still damp and basically noting will stick to a damp structure for long.
Tanking should be on the wet side, outside of the structure, so that it prevents water being absorbed into the structure in the first place.
A better way to tackle the problem is to control the environment. This can be done by using ventilated wall linings and ventilated floors in combination with dehumidifiers and heating systems.
As for costs.
A dpm floor coating, assuming the floor is in good enough condition to receive on should be between £ 1,000 & £ 2,000 depending on specification.
Tanking to walls should be £ 900 to £ 1200 depending on spec.
Chemical dpc injection should be possible for about £ 600 to £ 700.
2006-10-24 04:26:37 · answer #3 · answered by Anonymous · 1⤊ 0⤋
How To Tank A Cellar
2016-11-14 21:06:34 · answer #4 · answered by wysong 4 · 0⤊ 0⤋
You need to get estimates from 2 - 3 builders who are prepared to carry out this work. I believe it can be expensive. Also as you live in London consideration has to be taken into parking builder's vehicle and delivery of materials, etc.
2006-10-24 03:50:48 · answer #5 · answered by remember_lizzie 2 · 0⤊ 0⤋
The remotely-operated trap doors underneath the conference room seats will really drive the cost up.
2016-03-17 05:34:22 · answer #6 · answered by Anonymous · 0⤊ 0⤋