Fixing curtain pole track pulling from wall

Concrete lintels here, so SDS! (I still remember using a Rawltool when we first moved in iin the '60s). To use screws that were too long for 'modern' plugs (at least the old Rawlplug could be cut to length) I de-flange, if necessary, a plug, push it to the base of a hole and then cut down another plug to fit (this also removes the narrow end of the plug, giving more engagement). Some internal walls are hollow blocks - bloody hard - so v. little meat. The plugs hold OK though - if they were softer it'd be a problem.

I had the same problem with crumbly bricks and plaster.

Remove screws and plugs, blow hole out with a straw, pump hot melt adhesive in from glue gun, push in new plugs with thumb while glue is still molten, hold burnt thumb under cold tap for a minute or two and re-fix screws.

Cheers

Bad idea to drill into a lintel, which is probably galvanized. Depending on the contruction, you could well get some interstitial condensation.

Galvanising does not have to be continuous to work though. At the extreme, ships have a few blocks of zinc attached to protect the whole ship. It is a sacrificial anode, not a protective coating.

SteveW