Sealing a Stainless Rangehood against painted Cornice and wall

[DaleBlack]

What product is best to seal these gaps

537671
537672
537673


Could a basic product like this work
https://www.selleys.com.au/products/sealants/wet-area-silicone/selleys-white-for-life-silicone-sealant/

White For Life Silicone Sealant


Key Features



Waterproof seal
Always looks like new
Mould resistant
Resists yellowing, staining or blackening*
100% silicone sealant
5 year mould resistant guarantee#
25 year guarantee against cracking and peeling#
*Clean up spills immediately-sealant will resist penetration by common stains for up to 10 minutes.



Or does it need to be more specialist Joint Specific like
https://www.selleys.com.au/products/sealants/multi-purpose/selleys-635/

Selleys 630 Low Modulus Multipurpose Elastic Joint Sealant

Key Features



+/- 35% Joint Movement
Adhesion to wet surfaces^
UV & weather resistant
Paintable



It was previously sealed wo any cracks for about 7 years post being put in but in fixing my ductin, see another thread I had to break the seal and dig the silicone out.

[r3nov8or]

Sorry mate, but your photos are showing "invalid attachment" errors

[DaleBlack]

okay thanks, the photos should show now

[droog]

Personally I would just use No More Gaps
https://www.selleys.com.au/products/putty-and-fillers/gap-filler/selleys-no-more-gaps-interior-multi-purpose/

[DaleBlack]

I just didnt see No More Gaps mentioning adhesion to metal or stainless

[droog]

I just didnt see No More Gaps mentioning adhesion to metal or stainless

Don’t think it specifically calls out stainless but metal yes:



Superior adhesion to a broad range of surfaces, resulting in a lasting finish.
Suitable for sealing gaps where movement occurs such as: between window and door frames and the wall, along skirting boards, around cornices, in corners or between walls & ceilings, between cabinets and cupboards, around air conditioning vents and the ceiling.

[r3nov8or]

I think No More Gaps would be ok. It allows you to build it up to fill larger gaps like those. Or the second one above as it's paintable like NMG.

I'd mask the stainless to get a nice sharp line