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He's not on this thread much but @mespilus is a man who knows his sealants
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Thank you for the unsolicited recommendation.
'Silicone' gets a lot of instinctive initial response.
Not overly expensive, adequate (unprimed) adhesion to most common building substrates,
and can be tooled off to an acceptable finish by careful amateurs/pro-sumers.The hybrid polymer sealants were designed to improve upon the performance characteristics of 'silicones', (and improve the profit margins of the manufacturers).
Better unprimed adhesion, even onto damp surfaces in humid conditions, over paintability, similar flexibility*, and less electrostatic attraction of dust particles, quicker tack-free time,
quicker through cure and the same ease of tooling off.The Soudal 'Fix All' has been recommended before as a 'do most things' sealant,
with the added benefit of supporting a manufacturer who supports cycling.Disappointingly, I see in the Toolstation catalogue, (only one to hand), only the 'Crystal' is available.
Perusing the range, the 'Turbo' comes in a range of colours.There must be an alternative stockist/supplier.
(*'flexibility' is a vexed issue. An overthin skin of sealant will soon fail, no matter the lab-based 'elongation at break' figure. Aim for a bead with at least 6mm of contact).
Need to seal/caulk a few things. Around a window (indoors), counter top, and probably the tub could use another application. Is there something I can get for all of these purposes?