How to best fill gap along wall?

[JeT2]

Throughout this house there is a gap between two sections of the internal walls. It’s big enough to let light (and sound) through and is where two parts of the wall join. And is along the whole wall.

 Just wanting some advice on options (easiest) to fill or cover these gaps. The  section of wall goes in (ledge/recess). See photos. Many thanks. 

[JacobZ]

Hi @JeT2,

It's tough to tell, but it looks like the beam doesn't line up perfectly with the wall below. Is that correct? If so, how many millimetres wide is this lip?

I ask because the best option I see is to attach a timber trim to the bottom edge of that beam, and then seal the bottom edge of the trim to the top of the wall with No More Gaps. No More Gaps is flexible, so it will allow for some slight movement between the surfaces, which is likely, without cracking.

Selecting a profile of timber trim that doesn't jut out past the face of the wall would be ideal, so if you let me know how wide that lip is, I can certainly point you towards some specific trims.

You would attach the trim to the beam using brad nails driven below the surface of the timber, which can then be filled with Spakfilla, sanded and painted.

Let me know what you think.

Jacob

[JeT2]

Thanks Jacob. Yes that’s correct the plaster doesn’t line up with the ledge/beam below. The gaps vary but are around 10mm in size. Cheers

[JeT2]

Another photo showing ledge below is 50mm and gap at bottom of wall is 10mm

 

[JacobZ · Accepted solution]

Hi @JeT2,

You can use a piece of 42 x 18mm White Moulding Pine, attaching it to the beam with the method I mentioned above.

Generally, when there are gaps like this, they were left for a reason, which is usually the movement of materials. This will cover the gap without mechanically connecting the beam to the wall below, which will allow for some slight movement.

Let me know what you think and if you have further questions, please don't hesitate to ask.

Jacob