Pointing under uPVC window frames / sills

[garyo]

A few months ago I completed a self build conservatory. The sills float on the dwarf wall, packed out with spacers as required to get it dead level.

Spurred into action by the recent cold spell, as the the installation instructions, I attempted to point under the cill with cement/mortar. What a pain. The gap varies between 8mm and 1mm, and I'm finding it very difficult to do much but make a mess. Inside is slightly easier than outside because I can attack it from the top and the cement will sit on the wall and I can push it under (from the outside I have gravity working against me)

I feel like I want to pack a silicone cartridge with mortar! Am I doing something stupid? Should I just silicone/caulk/grip fill it?

Thanks

Gary

 

[EddieC]

gary a clear silicone should do the job and won`t fall out. put some masking tape on the brick first under the external cill and cut back the nozzle on the cartridge to it`s widest point and this should cover the 8mm gap when applying the silicone. smooth it with a damp finger but clean your finger as you go otherwise it starts to get messy.take the masking tape off - jobs a good un