Expanding foam question

[Easy-X]

I've got some gaps in my shed roof that are a bit too big for a mastic gun (1 ~ 2cm) so I'm thinking expanding foam? The stuff's a bit too mad for my liking - cue flashbacks of watching The Blob as a kid

Is there a "slightly less mad" version of expanding foam or a better way of filling the gaps? (Mostly wood to wood.) It just needs to look impressive to the wife who's muttering about spider ingress
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Freddyfruitba...]

[Easy-X]

Interior gap filling. I've used expanding foam before, I don't trust myself with it
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Raffles]

Something like this is totally controllable and will pay for itself in no time at all through reduction of wastage:-

https://media.screwfix.com/is/image/ae235/87934_A2
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A good loser will always be a loser.

[Easy-X]

I was eyeballing the gun version on the Screwfix website but it didn't quite click... thanks! I'll give it a go.
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[doggone]

[Raffles]

[piazza]

I used tar flashing on my garage - been fine for almost a year now, quick and easy.

[WD Forte]

I doubt it has enough pressure to jack boards apart as it expands along the line of least resistance so unless you inject it into an enclosed area
it will fill gaps and voids well enough
Screwfix's cheapo stuff will probably do the job
just don't over apply it as the clean up could be a chore
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bikers smell of wee

[A100man]

[Easy-X]

I went for the in-between option, a can with a plastic gun built-in. Much more controllable. Also discovered you can get ready mixed cement in mastic gun form - a choice of beige or grey - and fixed up some of the exterior mortar work.

All in all a very productive Bank Holiday
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[that_impulse_guy]

there expanding foam...and then theres expanding foam..
the one meant for doors and windows is a "low expansion" formula. Thats probably the one you'd want.
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