I bought some douglas fir and much of it is heavy with sap. Many pieces have thick layers of goopy yellow sap, and I'm worried about this leading to creosote buildup in my chimney and/or stove (Morso 5660 insert). It was supposed to be "clean and dry premium" firewood, but it's kind of a mess. It's been about 5 or 6 years since I've been able to find good firewood to buy, at any price.
![[Hearth.com] burning sap](https://www.hearth.com/talk/attachments/img_3325e-webp.347887/ "[Hearth.com] burning sap")
burning sap
- Thread starter Gazing in Wonder
- Start date
-
Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.
We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.
We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
I've burned a good amount of (not Doug but) fir with similar sap n what I think were windshake defects, (as well as pitch pine, which is worse....)
Not a problem if it's dry - and if you stack it now off the ground and top covered it'll likely be okay this coming winter.
You do have to be able to control the draft so it doesn't suck smoke past the reburn tubes too fast.
@Highbeam may be even burning more of the stuff.
Not a problem if it's dry - and if you stack it now off the ground and top covered it'll likely be okay this coming winter.
You do have to be able to control the draft so it doesn't suck smoke past the reburn tubes too fast.
@Highbeam may be even burning more of the stuff.
That sap will burn hot, try mixing the sap wood with other non sap wood in the stove. That, along with it being dry and a reasonable air setting to allow a clean burn shouldn’t allow much for creosote buildup.
Take some of the sappy pieces and split real small, excellent kindling/ fire starters! Saw a small pack of that in the big box store today for $8.
Similar threads
