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No-one has time to find the correct primers for long term adhesion,
for two such different materials, (hard?) wood and aluminium?Therefore you need an elastic sealant, (not 'caulking', please @withered_preacher),
with good wear and tear resistance, great unprimed adhesion and UV resistance.Good tear resistance rules out (cartridge/ single component) Silicones.
Good wear resistance rules out oil-based mastics and acrylics.
Domestic situation requiring quick skinning/cure time rules out polysulphides.Want to support a firm that supports your hobby?
Soudal Fix All High Tack, item no. 84704 £6.38 from Toolstation
who are operating 'Click'n'Collect' from your local store.
Just note recommended joint dimensions for long term durability,
and,
leave a concave surface to your bead of sealant.Editted to add link to Soudal website page for Tech data.
mespilus-
My bad, I was using the term broadly, not recommending a specific product.
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Legend! Thanks for taking the time to write that comprehensive reply. Will order some for click and collect this weekend!
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That looks like exactly what I need to fill the small gaps between my stair treads and wall which are subject to a little movement.
Does it dry white or clear?
withered_preacher
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tbc
I've just stripped the painted rear wooden step that's under our rear sliding door.
It's looks great but has some small cracks that will need to be filled before repainting. Any recommendations for a decent outdoor wood filler?
Also, I'll probably need to run a bead of some sort of waterproof sealer between the metal door frame and the step. What ever was there seems to have perished. Any recommendations for a product for this also?