Chin Strap with beard

[PollCat]

I would strongly urge you to go see an ENT doc.  I had similar breathing issues with mouth breathing and the use of nasal sprays.  The ENT found that I had sinus polyps that were obstructing the nasal/sinus passages that the OTC sprays were not helping.  I've had to have these things removed 3 times over the last 30 years.  Now, to keep them at bay, I use a nasal rinse in the morning and a prescription spray at bedtime.

[Gideon]

When I used a chin strap (with a beard) even when extremely tight (I know) I couldn't stop my leaks.  I just over powered the chin strap and opened my mouth anyway.

This does work for some, but not all.  

Wearing the chinstrap helped me train myself to keep my mouth closed, better, but not all the way there,  What works for me is to tape my lips, contraversial, but it works for me.

Read the Mask Primer (in my sig) for ways to manage mouth breathing.  A fairly new "discovery" is a surgical colar worn loosly

I read the links in your signature great work   .....for the mouth tape what brand do you use?
I have the full face mirage quatro pro, mouth breather never tried a chin strap and looking at cervical collars as well.

I use a generic cloth sports tape.It actually has a fairly low stickness

[jsielke]

Looked at "Ultimate Chin Strap." $60 for a chin strap? For that, it should clean my mask, vacuum the floor and fix morning coffee.

[Beej]

Re: the sinus issues.

It would be good idea to see a physician to identify any allergic, infectious, or structural issues affecting your breathing. There are treatments and procedures to help with most problems.