Replacing mortar around external door frame

[tonysab]

For some time we have had a portion of mortar cracked and come loose on the outside of the door frame where over time the door has been slammed and worked it loose. Now it has finally fallen out - see attached pic.
Question is - what is the best way to repair this? I have read about using a foam filler to fill the gap between frame and brickwork - there is a small gap here. Also that we should not use mortar since it will always crack and fall out again - but if that is the case what should we be using? Also read about mixing mortar with a glue of some sort, or using a mastic filler?
Any advice greatfully received.

Untitled

• tonysab
• 11 Mar 2015
• 1

 

[ree]

You could remove all the S&C fillet around the frame or just remove that leg of S&C.

You could then prime the gap and the exposed brickwork with SBR - one coat to dry and the second coat to be tacky.

Use some low expansion foam in the tacky gap, and mix some semi-dry S&C with SBR (or SBR and water) to apply as a new fillet.
First, apply tape to the frame, to remove later leaving you with a clean edge.

Dont over trowel the fillet, finish it with a piece of wood (or a wood float if you have one) after allowing it to set up a little.

If you have teenagers, the door slamming will continue but perhaps look into braking it down?
Is the frame securely fixed?

 

[bobby spray]

the traditional way is to use a sand mastic (mixture of burnt sand and rosin oil) applied using a margin trowel. this technique was applied to traditional joins between masonary and wooden windows. lasts decades.

 

[theprinceofdarkness]

The door has a flexible plastic frame, so slamming the door causes the frame to deflect and put a shear force on the edge of the fillet. So putting in a couple of extra "frame" fixings might stop this happening before you attempt a repair. An alternative would be to put a strip of some resilient material on the frame before you put the fillet on, perhaps a bit of the thick (2mm) double sided foam tape. The paint will hide the edge of it.
Frank