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Cold roof space soffit/wall junction


WWilts

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New build in progress.

 

Roof covering: Roofshield air permeable membrane with Cambrian slate on top.
Soffits well pinned down to outer leaf by wood/screws. Eaves have PIR insulation against inner leaf, crown wool insulation to spill out from loft into remaining eaves space.

 

Is there any real reason to be siliconing the soffit/wall junction? (red arrow)

soffit silicon.png

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On 03/04/2022 at 13:05, WWilts said:

any real reason to be siliconing the soffit/wall junction?

If there is a gap, then insects will enter and live in the eaves. Bees and wasps mine into  PIR. 

Whether that is good or bad is another discussion.

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1 hour ago, saveasteading said:

If there is a gap, then insects will enter and live in the eaves.

Would a plastic soffit vent mesh do the job? (folded and inserted into the tiny gap)
Or is multipurpose silicone better?

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