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DerbyBorn[_5_]

(Andrew Gabriel) wrote in
:

In article 6,
DerbyBorn writes:
Looking at a a house with view to purchase. It has a high wall around
the carden. seems in good order - just a few spalled bricks on the
top - but I have seen some in same road a lor worse,
Built of normal facing bricks - top row has a tile under.
I was wondering if there is any substance I could paint on the top to
reduce moisture penetration and frost damage.

How is the top of the wall formed?
Does it have capping with a drip strip to shed water away from the
wall faces?

Applying coatings can make things worse, by trapping moisture inside
the wall. Wall must still be able to breath.

Any idea how old the wall is? If it's relatively new and spalling,
that might also point to it having been built with bricks which are
too absorbent. Garden walls where both sides are exposed need lower
absorbency bricks that house walls, where only one side is exposed
(and the other side used to get some heating, before super-insulated
homes).

Update. Plain wall- no tiles so no drip strip - built 1988.