damp proofing question

Question

my house has a conservatory on the back. Will I need to locate my damp proofing bricks before I higher the garden up or will it be ok to higher the patio to the highest step to the door.

David · Accepted Answer

The building regulations, advise a minimum of 150mm from the ground level to the damp proof course. So I would not advise rising the garden level up unless you still have a 150mm difference  from the ground level to the damp proof course. 
If you are on about the air bricks these have to be below the damp proof course to allow the underfloor ventilation. I would recommend employing a qualified surveyor.

Jon · Answer

Hi it all depends on how high you are going 
It’s not good to be higher than your damp proof course 
You may need to install a soak away or drainage 

You don’t want any water falling back on to the house walls
As this can cause damp
Also anything under the paving may need to be tanked

Luke-michael · Answer

You need to add a damp proofing paint to any timber that is being fitted to the house.

Brad · Answer

Hi you should always have at least two courses from path height to your damp course to stop it rising over your damp level

Dominic · Answer

Hi there you should always be 2 course off brick in height to be height from the ground to be on the damp course hope this is help help full

Gary · Answer

I would suggest you make sure but the damp proof coursing should be at door level so putting patio to the underside of your door should be fine.

Jason · Answer

If you must raise external levels, first Locate damp proof course then dig a trench 500mm depth below damp. You will then need to use tanking against the wall then backfill with shingle or similar aggregate. Then install a channel drain against the full length of the wall, to the desired finished level. It can be done, but it must be done properly or you risk bridging the dpc

Michael · Answer

Yes you need to know where your damp proof is and rule of thumb is the Paving starts two bricks below.

Charlie · Answer

Hi there  

I personally would locate the dpc first because it could affect your conservatory in the long run

damp proofing question

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