418036 Silicon Carbide 12 in x 18 in Floor Sanding Sheets, 36 Grit

Our review of these 12 in x 18 in sanding sheets finds them best suited to contractors and serious DIYers who need a durable, economical abrasive for floor repair and refinishing. The single biggest reason to buy is the consistent performance of the 100% silicon carbide grain combined with an extra heavy paper backing that extends life under aggressive use. For anyone running a square buff or compatible machines and needing an affordable 20-pack of 36 grit sheets, this product offers straightforward value without gimmicks.

Key Features

• Precut fit: Twenty precut sheets are sized to fit 12 in x 18 in square buff machines and popular brands like Clarke and Deva, saving time on trimming.
• Silicon carbide grain: The sharp silicon carbide abrasive provides consistent cutting for both hardwood and concrete sanding tasks.
• Extra heavy backing: The heavy paper backing improves tear resistance and durability for longer runs without frequent replacements.
• Backside grit: Grit on the backside helps the sheet adhere to sanding pads and prevents slipping during use.
• Range of grits available: The product line covers grits from 20 to 100, making it easy to match the sheet to the stage of refinishing or repair.

Who It's For

The 418036 36 grit sheets are aimed at professional floor refinishers and homeowners who tackle full-floor sanding jobs and need an abrasive that holds up under pressure. They work particularly well for the aggressive initial passes on hardwood or for leveling concrete high spots before fine sanding.

Those who should look elsewhere include buyers who need very fine finishing grits or specialty coatings; this 36 grit option is coarse and intended for heavy material removal rather than final polishing. Also, users who require a specific proprietary attachment system should confirm compatibility before buying.

Pros & Cons

Pros

• Durable silicon carbide grain gives reliable cutting performance on wood and concrete.
• Extra heavy backing reduces tearing and increases usable life during larger jobs.
• Twenty precut sheets fit common 12 in x 18 in buffers so no cutting is required.
• Good overall value compared with specialty industrial abrasives.

Cons

• Adhesive quality gets mixed feedback, so some users may need to check pad compatibility before long runs.
• Coarse 36 grit is unsuitable for final smoothing or polishing tasks.

Specifications

Our Verdict

This 20-pack of 12 in x 18 in 36 grit silicon carbide sheets is a practical choice for anyone doing floor repair or the heavy-cut stage of refinishing. It delivers consistent cutting, durable backing, and good value for contractors and committed DIYers, though buyers should confirm pad adhesion for their particular buffer before starting extended jobs.

Frequently Asked Questions

Will these fit my square buff machine?
Yes, the sheets are precut to 12 in x 18 in to fit square buff machines and named compatible models like Clarke and Deva.

Are these suitable for hardwood floors?
Yes, the 100% silicon carbide 36 grit is intended for aggressive sanding on hardwood and can also be used on concrete.

Does the back stick to a sanding pad?
The backside has grit to help adhesion, but customers report mixed adhesive experiences so testing on your pad is recommended before full jobs.