The pass-through fitting that a flue uses where it penetrates a wall.
A UL-listed sleeve, either refractory or metal, that carries a stove pipe safely through a combustible wall and into the chimney. When a thimble is sized or installed wrong, it becomes a leading cause of wall fires.
We work on thimble every week across DFW. CSIA-certified, written quotes, financing available.
Free written quote. Same-week scheduling. 24/7 emergency response when you need it.
Active leak, animal in flue, post-fire damage, or smoke event? Real humans on the line 7 AM to 12 AM every day — replies in under 2 minutes. Tech dispatch within 2 hours during business hours, subject to crew availability after-hours.
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