Fascia board gap

[joec1985]

Any idea what I can use to fill this gap in terms of a sealant? Any brand to look out for? I plan on using this as the gap is big enough prior to sealant:

https://tinyurl.com/ub5sabnc

But unsure what to fill/seal it with.

Thanks in advance.

 

[kingandy2nd]

White exterior sealant.

I’d suggest using masking tape to get a clean edge on each side of the bead of silicone.

 

[joec1985]

Thanks do you reckon this would be ok?

https://www.screwfix.com/p/no-nonse...Vg4bVCh0gNQOGEAQYASABEgK9QPD_BwE&gclsrc=aw.ds

 

[kingandy2nd]

Thanks do you reckon this would be ok?

https://www.screwfix.com/p/no-nonse...Vg4bVCh0gNQOGEAQYASABEgK9QPD_BwE&gclsrc=aw.ds

yes that’ll do it.

 

[^woody^]

You'll be better off with a sealant that can be painted over.

Some acrylic mastic can as can a polymer mastic, but silicone can't.

It's not clear what that Screwfix product is and it does not seem to say if overpaintable.

 

[cdbe]

Don't use that foam stuff you've linked to. Depending on the size of the gap either use a uPVC quadrant or flat trim from eurocell along the full length of the soffit and stick it on with LMN silicone. You will make a real mess trying to fill that gap with anything from a tube. Alternatively, in the unlikely event that the soffit is sound enough to be nailed into you could use a slightly wider flat trim and polypin it to the soffit. Both the quadrants and the trims will bend to the shape of the wall.

 

[^woody^]

Don't use that foam stuff you've linked to. Depending on the size of the gap either use a uPVC quadrant or flat trim from eurocell along the full length of the soffit and stick it on with LMN silicone. You will make a real mess trying to fill that gap with anything from a tube. Alternatively, in the unlikely event that the soffit is sound enough to be nailed into you could use a slightly wider flat trim and polypin it to the soffit. Both the quadrants and the trims will bend to the shape of the wall.

If any trim is fitted, it should not be bent to the wall (that's an amateurish bodge), but fitted straight and any gap filled with mastic.

 

[cdbe]

If any trim is fitted, it should not be bent to the wall (that's an amateurish bodge), but fitted straight and any gap filled with mastic.

Sometimes a bodge is needed to fix a bigger bodge, in this case the massive dip in the rendering that has caused the gap. Trying to fill that gap, which looks to be at least 10mm, with any kind of sealant will look horrendous and it will soon crack and fall out.
Few would notice the curve of a bit of trim up there, but if it was me I'd scribe it to the wall so the outer edge was even.