The current barn project has reached the stage where I am preparing the
base for laying concrete. I have brought the brickwork up to damp course
level and plan to lay 6" of concrete to this level.

Rather than relying on the membrane to trap the expansion strip I wonder
if there is a suitable glue to *tack* it to the brickwork?

ISTR somebody mentioning this sort of thing as a possible use for
expanding foam. Is there something more suitable for attaching fibre
bats to clean brick? About 40m worth!

regards
--
Tim Lamb

Tim Lamb
wibbled on Sunday 14 February 2010 10:25

The current barn project has reached the stage where I am preparing the
base for laying concrete. I have brought the brickwork up to damp course
level and plan to lay 6" of concrete to this level.

Rather than relying on the membrane to trap the expansion strip I wonder
if there is a suitable glue to *tack* it to the brickwork?

ISTR somebody mentioning this sort of thing as a possible use for
expanding foam. Is there something more suitable for attaching fibre
bats to clean brick? About 40m worth!

regards

Low expansion PU foam as sold for dot n dabbing plasterboard might be a
goer.

--
Tim Watts

Managers, politicians and environmentalists: Nature's carbon buffer.

In message , Tim Watts
writes
Tim Lamb
wibbled on Sunday 14 February 2010 10:25

The current barn project has reached the stage where I am preparing the
base for laying concrete. I have brought the brickwork up to damp course
level and plan to lay 6" of concrete to this level.

Rather than relying on the membrane to trap the expansion strip I wonder
if there is a suitable glue to *tack* it to the brickwork?

ISTR somebody mentioning this sort of thing as a possible use for
expanding foam. Is there something more suitable for attaching fibre
bats to clean brick? About 40m worth!

regards

Low expansion PU foam as sold for dot n dabbing plasterboard might be a
goer.

They should have that where I am going for the expansion strip, so I
will ask for advice.

Ta.

regards


--
Tim Lamb

In message , John
Rumm writes
Tim Lamb wrote:
The current barn project has reached the stage where I am preparing
the base for laying concrete. I have brought the brickwork up to damp
course level and plan to lay 6" of concrete to this level.
Rather than relying on the membrane to trap the expansion strip I
wonder if there is a suitable glue to *tack* it to the brickwork?
ISTR somebody mentioning this sort of thing as a possible use for
expanding foam. Is there something more suitable for attaching fibre
bats to clean brick? About 40m worth!

The spray on contact adhesive as beloved by carpet fitters might do
what you want. Quick and easy to coat large areas, and sticks on
contact.

Hopefully just a few dabs along the 2.4m lengths. I'll enquire at Carpet
right? tomorrow. Ta.

regards


--
Tim Lamb

Tim Lamb
wibbled on Sunday 14 February 2010 22:17

In message , Tim Watts

Low expansion PU foam as sold for dot n dabbing plasterboard might be a
goer.

They should have that where I am going for the expansion strip, so I
will ask for advice.

This was the stuff:

http://www.toolstation.com/shop/Adhe.../sd2857/p60449

It won't grab and it won't hold for about 20-30 minutes - so you'll need to
prop the bats in position for that time (few bricks?). Once it's set they
will not be coming off easily so they should be fine when you start slapping
the concrete around.

The main difference between this and regular foam is the expansion ratio -
once it's out of the can (primary expansion) it will expand to about double
that while it sets, so you don't need a lot and dots should be fine. It gap
fills very nicely too.

Cheers

Tim

--
Tim Watts

Managers, politicians and environmentalists: Nature's carbon buffer.

In message , Tim Watts
writes
Tim Lamb
wibbled on Sunday 14 February 2010 22:17

In message , Tim Watts

Low expansion PU foam as sold for dot n dabbing plasterboard might be a
goer.

They should have that where I am going for the expansion strip, so I
will ask for advice.

This was the stuff:

http://www.toolstation.com/shop/Adhe...ng+Foam/Dry+Wa
ll+Foam+Fix+750ml/d180/sd2857/p60449

It won't grab and it won't hold for about 20-30 minutes - so you'll need to
prop the bats in position for that time (few bricks?). Once it's set they
will not be coming off easily so they should be fine when you start slapping
the concrete around.

The main difference between this and regular foam is the expansion ratio -
once it's out of the can (primary expansion) it will expand to about double
that while it sets, so you don't need a lot and dots should be fine. It gap
fills very nicely too.

Not got there yet:-)

The carpet stuff may have an issue with temperature and moisture so dry
wall foam/fix looks best. Cold, damp etc. for most of the coming week.

regards

--
Tim Lamb