CoatCalm

Coat Blow Survival Guide

When it starts, how long it lasts, and what actually keeps the undercoat off your couch.

What coat blow actually is

Double-coated dogs grow a dense, wooly undercoat for insulation and a coarser outer coat for weather protection. Twice a year — driven mostly by daylight change, not temperature — the undercoat releases more or less all at once. That's coat blow. It is not ordinary shedding: the undercoat comes out in tufts and clumps you can pull free with your fingers, and it keeps coming for weeks.

When it happens

Most double-coated dogs blow coat in spring (losing the winter undercoat) and again in fall (dropping the summer coat to grow the winter one in). Spring is usually the heavier of the two. Indoor living and artificial light blur the schedule, so plenty of dogs run a few weeks early or late — the calendar below is a starting point, not a rule.

Breed	Typical seasons	Typical length
Siberian Husky	Spring + fall	3–6 weeks
German Shepherd	Spring + fall, sheds year-round too	2–4 weeks
Golden Retriever	Spring + fall, moderate	2–4 weeks
Alaskan Malamute	Spring + fall, heavy	4–6 weeks
Corgi	Spring + fall, sheds year-round too	2–3 weeks
Australian Shepherd	Spring + fall	2–4 weeks

The two tools that matter

Most deshedding frustration comes from using one tool for a two-part job.

1. An undercoat rake reaches through the outer coat into the packed underlayer and pulls the loose wool out. This does the heavy lifting. Rounded, rotating teeth matter — sharp-edged rakes can cut healthy coat instead of pulling dead coat.
2. A deshedding/finishing tool lifts what the rake loosened but left behind, and catches the finer release near the skin. Used alone it skims the surface; used after the rake it finishes the job.

Slicker brushes, grooming gloves, and vacuums with dog attachments are fine for maintenance weeks, but during a blow they mostly tidy the surface while the undercoat keeps coming.

Technique in one paragraph

Work in the direction the coat grows, in short strokes, one body zone at a time — rear end and pants first (heaviest release), then flanks, back, chest, neck, tail. Keep sessions to 15 minutes or so; a blow is won over weeks, not in one marathon. Never rake ears, face, or lower legs, and stop at pink or irritated skin. A bath with a proper blow-dry midway through the season releases more coat than any single brushing session — if you do one thing beyond raking, do that.

The 6-week schedule

Week	Routine
1	Rake 2× (15 min), focus rear + pants. Expect shocking volume — normal.
2	Rake 2×, add finisher after each pass. Flanks and back join the party.
3	Bath + thorough blow-dry (or force-dryer at a self-wash). Rake after, once dry.
4	Rake + finisher 2×. Volume should be visibly dropping.
5	Rake 1×, finisher 1×. Mostly finisher work now.
6	Finisher 1×. If tufts still pull free easily, repeat week 5 until they don't.

Do you need a groomer?

A professional deshed ($60–90) is genuinely useful if you're starting mid-blow with a badly packed coat, or your dog won't tolerate home sessions yet. But one appointment doesn't stop the blow — the coat keeps releasing for weeks after — so most owners either book two to three visits per season or do the maintenance themselves between visits. The tools pay for themselves inside one season either way.