January 8, 2026
Sanding a wood floor: the six steps, in order
From measuring thickness to the last coat of finish, here is what actually happens and how to spot a step that was rushed.
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Sanding and blasting · Eastern Townships
Two trades share one word
Hardwood floor sanding and abrasive blasting have nothing in common but the name. Different equipment, different preparation, different contractors. Here is how to tell which one you need and what a good quote should state.
Hardwood floors
Belt sander, decreasing grit, finish coat. You are working a surface you want smooth and about to varnish.
Abrasive blasting
Media propelled by compressed air. You are removing a layer, opening a profile, preparing for paint.
A flooring contractor does not own a blast pot, and the reverse is equally true. Describing the right trade up front saves two wasted visits.
3
Grit passes on a wood floor
6 to 8
Sandings in the life of a floor
4 h
Window before rust on bare steel
8
Services explained on this site
The two families
Eight services, two distinct trades
Four services concern hardwood floors, four concern abrasive blasting. Here is what each actually involves, so you know which one to ask for.
Hardwood floors
01Hardwood floor sanding
Three passes of decreasing grit, belt sander and edger. What preparation changes about the final result.
02
Varnish and oil finishing
Water-based, oil-based or hardwax oil: drying times, odour, durability and how each one is touched up.
03
Board and plank repair
Split boards, squeaks, localized water damage: what gets repaired before any sanding begins.
04
Stair sanding
Treads, risers, stringers and railings: why this is quoted separately from the floor.
Abrasive blasting
01Metal sandblasting
Trailers, frames, steel stairs, industrial parts: surface profile and the window before painting.
02
Concrete blasting
Removing epoxy, paint or adhesive from garage slabs and foundation walls before a new coating goes down.
03
Timber and beam blasting
Barn beams, timbers, cedar siding: soft media that opens the grain without carving into the wood.
04
Paint stripping
Built-up layers, lead paint, graffiti: the precautions that change everything on an older building.
How it should go
Four steps, and what to check at each one
01
The assessment
On a floor, remaining wear thickness decides everything. On metal or concrete, it is the substrate condition and the coating planned afterward. A contractor who quotes without coming to look is guessing.
02
The quote
It should state the number of passes, the final grit, the finishing product or the blast media, and what happens to the dust. Without those, two prices are not comparable.
03
Preparation
Emptying the room, protecting what stays, sealing openings. It is the step low bids cut first, and the one most often regretted.
04
Execution and after
On a floor, the drying times between coats. On metal, the window before flash rust appears. In both cases the schedule is part of the job.
How to recognize a good contractor
The one who says no is often right
A floor too thin to sand, media too aggressive for cedar, a slab too damp to take epoxy: in all three cases the right answer is to decline the job as requested. Here are the signs that separate a contractor who assesses from one who sells.
- They measure remaining wear thickness before discussing sanding
- They name the blast media and explain why that one
- Their quote states the final grit and the number of passes
- They test for lead before stripping an older building
- They tell you how long the room will be unusable
Territory covered by this site
From Sherbrooke to Lac-Megantic
Nine areas across the Eastern Townships and beyond. Blasting travels farther than many trades: the equipment moves, and a full day on site justifies the drive.
What customers say
★★★★★
The contractor explained there was enough thickness left for one sanding, not two. I appreciated knowing that beforehand rather than after.
Caroline Dufresne
Sherbrooke
★★★★★
The 1952 oak had already been sanded twice. They suggested a light screening instead of a full sanding, and the result is beautiful.
Yves Tremblay
Magog
★★★★★
The quote listed the number of passes, the final grit and the finishing product. That is what let me compare three bids seriously.
Manon Grondin
Granby
★★★★★
Trailer frame stripped and painted the same day. I was warned the window was short because of humidity, and that turned out to be true.
Steve Lachance
Windsor
★★★★★
The barn beams were blasted with soft media. The grain shows without the wood being carved out, exactly as explained.
Line Bergeron
Coaticook
★★★★
Good work on the garage slab. Dust was contained better than I feared, though everything had to be moved out first.
Patrick Nadeau
East Angus
The blog
Understand before calling anyone in
January 22, 2026
How many times can a wood floor be sanded?
The answer depends neither on the floor's age nor its appearance, but on a thickness anyone can measure in five minutes.
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February 5, 2026
Water-based or oil-based finish: your situation decides
Both products are good. What separates them is not stated performance but your schedule, your wood and your tolerance for odour.
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