Use of linseed oil putty.

Nov 18, 2010 14 Replies

Is there any reason to not use linseed oil putty (the stuff used for glazing) to seal the small gap between the metal frame of my garage door and the bare brick wall?



Now that it's getting a bit nippy, I'm on a quest to eliminate drafts from the garage, and this gap is a big contributor to thermal misery.



Cheers.


Yes, it's crap. It's far too rigid, so any movement cracks it, and tends to crack with age anyway.

Almost any proprietary mastic goop in a tube will be better. Look for an outdoor (UV stable) frame sealant, rather than a silicone. If it's _really_ flexible, pay more and get a polysulphide.

In message , David Paste writes

Why not use a polyurethane foam , wghich will expand to fill the crack, then face it off

OK, cheers.

Is frame sealant paintable?

It's not flexible at all, really, but thanks for the tip.

Linseed against a metal frame that will move slightly means the 2 wont bond well, but it should still work, it just will only be 98% airtight.

Anything other than silicone is paintable.

NT

Use "painters caulking". It comes in a tube just like silicone sealant and can be painted over easily -- and is available from the 'sheds' or nearest builders merchants.

A word of caustion with this stuff, read the information on the tube and pay particular attention to what it says about external use - it usually doesn't stand up to a constant soaking with water like silicone.

Cash

Why, is there a canoe in the garage?

Depends. Go to a shop with a range of them on the shelf (i.e. not Screwfix, who don't give much information in their cat) and read the tubes. "Frame sealants" will all be UV and weatherproof, with some degree of flexibility, but some are paintable and some (not just silicones) aren't.

"Caulking" is generally a good finish, sometimes mechanically capable, but rarely weather and lightproof for outdooor use.

Well, I have a stack of putty in the garage, so I was thinking of using it for the sake of using it, but if it's not as good as something else, I'll use something else!

Cheers.

Well, applying the "nothing to lose " principle - go for it

Yeah, it seems a shame not to use something that would otherwise be thrown out. If it all goes pear-shaped, I can always rake it out and use another method.

Don't forget to allocate a HBS [1] Number.

[Hare Brained Scheme]

Its going to make a right mess!

Hmm, well I'm not sure it is going to make a mess really. I've got a bit of experience dealing with this putty. And as for HBS numbering, well, they are all subsections of HBS-DP-001 (consciousness)!

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