I'm having problems with Twin wall Polycarbonate roof in my
conservatory. The fixing holes I have drilled leak even with the
correct rubber washers / covers

What seems to be the problem is that the Polycarbonate expands in the
sun and contracts when it rains and lets in the rain.


Any ideas on how to fix it?

--
zaax

On 8 Nov 2005 16:50:45 GMT, "zaax"
wrote:

I'm having problems with Twin wall Polycarbonate roof in my
conservatory. The fixing holes I have drilled leak even with the
correct rubber washers / covers

What seems to be the problem is that the Polycarbonate expands in the
sun and contracts when it rains and lets in the rain.


Any ideas on how to fix it?

The fixing screws should have rubber sealiers on the top, to deal with
tiny movments. check you have the correct tighness.

Rick

"Rick" wrote in message
...
On 8 Nov 2005 16:50:45 GMT, "zaax"
wrote:

I'm having problems with Twin wall Polycarbonate roof in my
conservatory. The fixing holes I have drilled leak even with the
correct rubber washers / covers

What seems to be the problem is that the Polycarbonate expands in the
sun and contracts when it rains and lets in the rain.


Any ideas on how to fix it?

The fixing screws should have rubber sealiers on the top, to deal with
tiny movments. check you have the correct tighness.

Rick

I had the same problem and fixed it by using proper polycarbonate flashing
under each button. just a little square which diverts the water around the
button. I had replaced all the buttons prior to this after the old ones
leaked and broke due to the heat.

Dave

In message , zaax
writes
I'm having problems with Twin wall Polycarbonate roof in my
conservatory. The fixing holes I have drilled leak even with the
correct rubber washers / covers

What seems to be the problem is that the Polycarbonate expands in the
sun and contracts when it rains and lets in the rain.


Have you drilled in the peaks or valleys ?

--
geoff