I'm going to build some outside steps alongside and touching an external
painted rendered wall to reach a raised garden area at the rear of the
property. Can someone recommend a "liquid" damp proofing that will be
suitable to treat the outside wall without affecting the newish paint
too much?

HandyMart wrote:
I'm going to build some outside steps alongside and touching an external
painted rendered wall to reach a raised garden area at the rear of the
property. Can someone recommend a "liquid" damp proofing that will be
suitable to treat the outside wall without affecting the newish paint
too much?


It sounds as though you'd be best off running a stepped flashing 6"
above the level of the steps, finishing under the steps (brick, stone,
W.H.Y.) to do a better job. The only "liquid" damp proofing that would
be useful is bitumen emulsion, which won't fit in too well with being
"on show" there. Don't forget to put a suitable fall on the steps.

Chris Bacon wrote:

HandyMart wrote:

I'm going to build some outside steps alongside and touching an
external painted rendered wall to reach a raised garden area at the
rear of the property. Can someone recommend a "liquid" damp proofing
that will be suitable to treat the outside wall without affecting the
newish paint too much?



It sounds as though you'd be best off running a stepped flashing 6"
above the level of the steps, finishing under the steps (brick, stone,
W.H.Y.) to do a better job. The only "liquid" damp proofing that would
be useful is bitumen emulsion, which won't fit in too well with being
"on show" there. Don't forget to put a suitable fall on the steps.


Yes, I was hoping to avoid the black bitumen appearance. Being an old
property and rendered. I can't see the state, location or type of the
DPC and what has been done to prevent damp ingress as the ground rises
to the rear. Although I can see blue plastic membrane just between
render and ground level. I don't want to chase into the render for
flashing in case anything gets punctured. The inside is perfectly dry. I
was hoping for something transparent and externally applied. Silicone
based perhaps?

Martin

HandyMart wrote:
Chris Bacon wrote:
HandyMart wrote:
I'm going to build some outside steps alongside and touching an
external painted rendered wall to reach a raised garden area at the
rear of the property. Can someone recommend a "liquid" damp proofing
that will be suitable to treat the outside wall without affecting the
newish paint too much?

It sounds as though you'd be best off running a stepped flashing 6"
above the level of the steps, finishing under the steps (brick, stone,
W.H.Y.) to do a better job. The only "liquid" damp proofing that would
be useful is bitumen emulsion, which won't fit in too well with being
"on show" there. Don't forget to put a suitable fall on the steps.

Yes, I was hoping to avoid the black bitumen appearance. Being an old
property and rendered. I can't see the state, location or type of the
DPC and what has been done to prevent damp ingress as the ground rises
to the rear.

The render should certainly not bridge the DPC.


Although I can see blue plastic membrane just between
render and ground level.

??? That sounds pretty "interesting". Can you upload pictures
somewhere?


I don't want to chase into the render for
flashing in case anything gets punctured. The inside is perfectly dry. I
was hoping for something transparent and externally applied. Silicone
based perhaps?

It doesn't last.

On Mon, 10 Apr 2006 19:32:41 +0100, HandyMart
wrote:

I'm going to build some outside steps alongside and touching an external
painted rendered wall to reach a raised garden area at the rear of the
property. Can someone recommend a "liquid" damp proofing that will be
suitable to treat the outside wall without affecting the newish paint
too much?

Plastic DPC ?

Rick