Hi,
Lifted porcelain tiles a few weeks back and removed cement. Some of that cement was under the patio door base frame.
Now there is a draft coming from that area (we can also see a black membrane).
Is this simply a case of ‘plugging the gap’ / using sealant before levelling and installing a new floor or something more serious?
Also, every night a darker patch appears around where our manhole cover is which is also next to the patio doors.
It disappears mid morning. Nothing -at all- is leaking from the manhole.
Grateful for any advice.
Lifted porcelain tiles a few weeks back and removed cement. Some of that cement was under the patio door base frame.
Now there is a draft coming from that area (we can also see a black membrane).
Is this simply a case of ‘plugging the gap’ / using sealant before levelling and installing a new floor or something more serious?
Also, every night a darker patch appears around where our manhole cover is which is also next to the patio doors.
It disappears mid morning. Nothing -at all- is leaking from the manhole.
Grateful for any advice.
