u/segasega89

When applying new sealant between roof ribs should I remove the worn old sealant?

It seems that the sealant in between the roof ribs and the roof of my Sprinter van has worn and I was going to use Sikaflex 221 to fix the issue but I tried to remove the old sealant with a paint scrapper and it seems too difficult to remove.

Could I leave the current sealant residue where it is and apply the 221 over it?

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u/segasega89 — 1 day ago

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Should I fill van floor ridges with expanding foam before laying down PIR?

I’m insulating the floor of my van and planning to run timber battens across the width, then PIR board between them.

The metal floor has those ridges underneath though, so the PIR won’t sit flush on the lowest points. I’m wondering what the best way to deal with that is.

Would it be okay to fill the ridges with Diall recycled insulation, or is it better to use expanding foam to fill them before putting the PIR down?

Trying to avoid condensation and cold spots long term, so just looking for the most solid approach.

Any advice appreciated.

u/segasega89 — 2 days ago